Quantum 10K II manual

Quantum Atla s TM 10K II 9.2/18.4/36.7/73.4 GB Ultra 160/m S Product Manual June 8, 2000 81-122517-04[...]

Quantum reserves the right to make changes and improvements to products without incurring any obligation to incorporate such changes or improvements in units previously sold or shipped. Quantum reserves the right to make changes to this product manual without incurring any obligation to notify recipients of earlier versions of the product manual. Y[...]

Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives iii CONTENTS REVISION RECORD .............................................................................................................. xvii Chapter 1 ABOUT THIS MANUAL 1.1 AUDIENCE .............................................................................................................[...]

Contents iv Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3.6.6 Installation in a 3.5-inch Bay .................................................................................................................... 3-24 3.6.7 Installation in a 5.25-inch Bay ......................................................................................[...]

Contents Quantum Atlas 10K II Ultr a 160/m SCSI Hard Disk Drives v 5.11.2 Vital Product Data Pages ......................................................................................................................... 5-37 5.11.2.1 Supported Vital Product Data Pages Page (00h) .....................................................................[...]

Contents vi Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 5.29 RECEIVE DIAGNOSTIC RESULTS C ommand (1C h) ....................................................................................... 5-157 5.29.1 Supported Diagnostics Pages Page (00h) .......................................................................................... 5-15[...]

Contents Quantum Atlas 10K II Ultr a 160/m SCSI Hard Disk Drives vii 6.9.3 Addressing Error Protection .......................................................................................................................... 6-4 6.9.4 Data Sector Reallocation Error Protection ........................................................................[...]

Contents viii Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B.7 SCSI Message Format .......................................................................................................................................... B-26[...]

Contents Quantum Atlas 10K II Ultr a 160/m SCSI Hard Disk Drives ix B.8 Supported SCSI Messages ................................................................................................................................... B-29 B.8.1 ABORT TASK Message (0Dh) (ABORT TAG) ..........................................................................[...]

Contents x Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Figures 3-1 Mechanical Dimensions for the 68-pin Wide SCSI Quantum Atlas 10K II Ultra 160/m Hard Disk Drive (9.1/18.2 GB Models) ........................................................................................................................................ 3-3 3-2 Mechanical[...]

Contents Quantum Atlas 10K II Ultr a 160/m SCSI Hard Disk Drives xi 5-35 XOR Control Mode Page — Data Format ................................................................................................... 5-82[...]

Contents xii Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Figures (continued) 5-36 Power Condition Page — Data Fo rmat ......................................................................................... 5-85 5-37 Information Exceptions Control Page — Data Format ............................................................... 5-8[...]

Contents Quantum Atlas 10K II Ultr a 160/m SCSI Hard Disk Drives xiii Figures (continued) 5-89 RESERVE (6) Command Descriptor Block — Data Format ...................................................... 5-191 5-90 RESERVE (10) Command Descriptor Block — Data Format .................................................... 5-193 5-91 Extent Descriptors[...]

Contents xiv Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Tables 3-1 SCSI ID Selection on Option Connector (68-Pin SCSI Connector Drives) .................................... 3-9 3-2 Jumper Settings for SCSI ID, 28-Pin Secondary Option Connector ........................................... 3-10 3-3 SCSI-ID Pin Assignments (SCA-2 Connector [...]

Contents Quantum Atlas 10K II Ultr a 160/m SCSI Hard Disk Drives xv[...]

Contents xvi Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Tables (continued) 5-37 Control Mode Page — Field Descriptions ..................................................................................... 5-77 5-38 Notch and Partition Pag e — Field Descriptions ........................................................................[...]

Contents Quantum Atlas 10K II Ultr a 160/m SCSI Hard Disk Drives xvii Tables (continued) 5-75 RECEIVE DIAGNOSTIC RESULTS Command Descriptor Block — Field Descriptions ............ 5-158 5-76 Source De scriptor — Field Descriptions .................................................................................... 5-162 5-77 RELEASE (6) Command[...]

Contents xviii Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Tables (continued) B-1 SCSI Bus Timing Values – ANSI SCSI-2 Standard ............................................................................ B-1 B-2 SCSI-3 Bus Control Timing ..................................................................................................[...]

Contents Quantum Atlas 10K II Ultr a 160/m SCSI Hard Disk Drives xix[...]

Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives xvii REVISION RECORD This Revision Record provides a publication history of this manual. It lists all major revisions and their effective dates. The publication number (part number) is listed in the Revision Level column. REVISIONS Revision Level Date Summary of Changes 81-122517-01 October 8, [...]

Revision Record Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives xviii Revision Level Date Summary of Changes 81-122517-04 June 8, 2000 4 rd release of final version of manual. Cover: Capacities corrected for 36.7 and 73.4 GB drives. Chapter 4: Changes to specs for formatted capacities (Section 4.2), data transfer rates (Section 4.3), timing [...]

Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 1- 1 Chapter 1 ABOUT THIS MANUAL This chapter outlines the scope and contents of this manual. It contains information about the intended audience, purpose of the manual, document organization, and document conventions. 1.1 AUDIENCE This manual was written for original equipment manufacturers (O[...]

About This Manual 1- 2 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives • LVDS low voltage differential SCSI • mA milliamperes • MB megabytes (1 MB = 1,000,000 bytes when referring to disk storage and 1,048,576 bytes in all other cases) • Mbit/S megabits per second • MB/s megabytes per second • ms milliseconds • MSB most signifi[...]

About This Manual Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 1- 3 1.4 REFERENCES For additional information about the SCSI Interface, refer to: • ANSI Small Computer System Interface-2 (SCSI-2) Specification, ANSI X3T9.2/86-109, Revision 10K II. • ANSI Small Computer System Interface-3 (SCSI-3) Specification, ANSI X3T10/August, 1994[...]

About This Manual 1- 4 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives[...]

Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 2- 1 Chapter 2 GENERAL DESCRIPTION This chapter summarizes the general functions and key features of the Quantum 10K II Ultra 160/m SCSI family of hard disk drives, and lists applicable standards and regulations. 2.1 PRODUCT OVERVIEW Quantum Atlas 10K II Ultra 160/m SCSI hard disk drives are pa[...]

General Description and Specifications 2- 2 Quantum Atlas 10K II 160/m SCSI Hard Disk Drives • 4.7 ms second average random seek time (read) and 7.9 ms average access-to- data time for the 1.0-inch drives; 5.2 ms second average random seek time (read) and 8.4 ms average access-to-data time for the 1.6-inch versions of the drive. • Embedded serv[...]

Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 1 Chapter 3 INSTALLATION This chapter explains how to unpack, configure, mount, and connect the Quantum Atlas 10K II Ultra 160/m SCSI hard disk drive prior to operation. 3.1 SAFETY, HANDLING, & ELECTROSTATIC DISCHARGE PROTECTION 3.1.1 Safety Precautions For your safety, follow all saf[...]

Installation 3 − 2 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives • Never force the drive or the mounting brackets into the drive bay. • Do not expose the drive to moisture. • Do not damage any seals on the drive; doing so may void the warranty. 3.1.3 Electrostatic Discharge (ESD) Protection Various electrical components within the [...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 3 3.2 SPACE REQUIREMENTS The Quantum Atlas 10K II Ultra 160/m SCSI disk drive is shipped without a faceplate (or bezel) and comes in the following SCSI interface configurations: • 68-pin Wide SCSI • 80-pin SCA-2 SCSI Figures 3-1 and 3-2 show the mechanical dimensions of d[...]

Installation 3 − 4 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Figure 3-2 Mechanical Dimensions for the 80-pin SCA-2 Quantum Atlas 10K II Ultra 160/m SCSI 9.1/18.2 Disk Drives (Low Profile Form Factor) Shock Feet Quantum Atlas 10K II Ultra 160/m SCSI disk drives are outfitted with plastic shock feet on the bottom edge of the base casti[...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 5 3.3 UNPACKING INSTRUCTIONS CAUTION The maximum limits for physical shock can be exceeded if the disk drive is not handled properly. Special care must be taken not to bump or drop the disk drive. 1. Open the shipping container and remove the packing assembly that contains th[...]

Installation 3 − 6 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3.4 CONFIGURATION JUMPERS AND CONNECTIONS This section includes setup and configuration information for Atlas II Ultra 160/m SCSI disk drives. These disk drives include • The 16-bit multimode Ultra 160/m SCSI-3 wide version with 68-pin SCSI connector, • The 16-bit multi[...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 7 ¡ ¡ Figure 3-4 Jumper and Connector Locations, 68-Pin SCSI Connector Version 20/19 Write Protect / GND 18/17 Busy LED / +5V 16/15 No Connect / No Connect 14/13 DiffSense / GND 12/11 Spin Delay / GND 10/9 Key / Fault LED 8/7 SCSI ID, bit 0 / GND 6/5 SCSI ID, bit 1 / GND 4/[...]

Installation 3 − 8 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3.4.1.1 TERMPWR (Disk Drives with 68-Pin SCSI Connector) To ensure that there is a sufficient level of power along the entire SCSI bus, Quantum Corporation recommends that all devices on the SCSI bus supply TERMPWR (if they are capable). SCSI devices are protected by a diod[...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 9 Table 3-1 SCSI ID Selection on Option Connector (68-Pin SCSI Connector Drives) Configure the drive for remote (external) SCSI ID selection by removing the SCSI ID jumpers (if present) from the referenced SCSI ID pins. Then connect the leads from the external selection switc[...]

Installation 3 − 10 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table 3-2 Jumper Settings for SCSI ID, 28-Pin Secondary Option Connector Jumper Location – Secondary Option Connector SCSI ID Pin Pair 7 / 8 Pin Pair 5 / 6 Pin Pair 3 / 4 Pin Pair 1 / 2 0 0 0 0 0 1 1 0 0 0 2 0 1 0 0 3 1 1 0 0 4 0 0 1 0 5 1 0 1 0 6 0 1 1 0 7 1 1 1 0 8 0 0[...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 11 3.4.1.5 Enable Narrow Mode (Force 8) (Disk Drives with 68-Pin SCSI Connector) Wide Data Transfer (WDTR) negotiations can be limited to 8-bit responses either by setting the Force 8 bit of the Quantum-Unique Page (39h) of the MODE SELECT command (15h) to 1, or by installing[...]

Installation 3 − 12 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3.4.2 Jumper Configurations and Connections for SCA-2 Connector Versions This section describes jumper settings and connections for Atlas 10K II Ultra 160/m SCSI drives with 80-pin SCA-2 (Single Connector Attachment) connector for the following features: • SCSI ID • Sp[...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 13 Figure 3–5 Pin Locations on SCA-2 Connector Table 3–3 SCSI ID Pin Assignments (SCA-2 Connector Versions of the Disk Drive) 3.4.2.3 Spin Up for SCA-2 Connector Versions Atlas 10K II drives with SCA-2 SCSI connectors have three Spin Up modes: • Option 1 Spin up occurs [...]

Installation 3 − 14 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table 3–4 Spin Up on Power On Options Option STAGGER_SPIN (Pin 78) DELAY_SPIN (Pin 38) Option 1 – Spin Up When Power is Applied Open Open Option 2 – Spin Up After Delay Ground Open Option 3 – Spin Up on START Command Open Ground Reserved Ground Ground 3.4.2.4 Activ[...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 15 3.4.2.5 Force Single-Ended Operation for SCA-2 Connector Versions A jumper is provided to force the disk drive to operate as a single-ended device. See the explanation of the LVD SCSI interface in Chapter 7 for details. To force the disk drive to operate as a single-ended [...]

Installation 3 − 16 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3.5 CONNECTOR PINOUTS AND WIRING DIAGRAMS Atlas 10K II Ultra 160/m SCSI disk drive interfaces include a 16-bit wide SCSI version and a SCA-2 connector version. Connector pinout information for the drive and signal connection diagrams are found in this section. 3.5.1 Atlas [...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 17 Table 3-5 68-Pin Wide (LVD) SCSI Connector Pin Assignments Signal Name Pin Number Pin Number Signal Name +DB(12) 1 35 -DB(12) +DB(13) 2 36 -DB(13) +DB(14) 3 37 -DB(14) +DB(15) 4 38 -DB(15) +DB(P1) 5 39 -DB(P1) +DB(0) 6 40 -DB(0) +DB(1) 7 41 -DB(1) +DB(2) 8 42 -DB(2) +DB(3)[...]

Installation 3 − 18 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3.5.2 Atlas 10K II Ultra 160/m SCSI Disk Drive With 80-Pin, SCA-2 SCSI Connector Figure 3-8 shows the location of the SCSI Connector on this version of the drive. Table 3-6 provides signal names/pin locations for the 80-pin SCA-2 SCSI connector. Figure 3-8 SCA-2 Connector [...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 19 Table 3-6 80-Pin SCA-2 SCSI Connector Pin Assignments Signal Name Pin Number Pin Number Signal Name +12 V 1 41 12V GROUND +12 V 2 42 12V GROUND +12 V 3 43 12V GROUND +12 V 4 44 MATED 1 NO CONNECT 5 45 NO CONNECT NO CONNECT 6 46 SCSI_DIFFSENS -DATA_M(11) 7 47 DATA_P(11) -DA[...]

Installation 3 − 20 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3.6 DRIVE MO UNTING AND INSTALLATION This section provides information for installing the disk drive and for connecting the SCSI and power cables as applicable. WARNING Before you begin, review the Safety, ESD, and Handling precautions described in the beginning of this ma[...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 21 Figure 3-10 Mounting Dimensions for the 80-pin SCA-2 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drive 3.6.2 Mounting Screw Clearance CAUTION The printed circuit board assembly (PCBA) is very close to the mounting holes. Do not exceed the specified length for the mount[...]

Installation 3 − 22 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives The PCBA is very close to the mounting holes. Figure 3-11 specifies the clearance between the screws in the mounting holes and the PCBA. Do not use mounting screws longer than the maximum lengths specified in Figure 3-11. The specified screw length allows full use of the m[...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 23 3.6.3 Shock Clip The shock clip provides an extra level of isolation from the occurrence of a short duration, non-operational shock, particularly when the disk drive is mounted on a rigid platform. CAUTION To prevent the possibility of a cross-threaded screw, it is recomme[...]

Installation 3 − 24 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Figure 3–13 Widthwise Airflow Cooling 3.6.6 I nstallation in a 3.5-inch Bay CAUTION Screw-length must not exceed 0.25-inch (6.25 millimeters) or the drive may be damaged. The drive base contains threaded holes on its sides and bottom to mount the drive (see Figure 3-9 or[...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 25 3.6.7 Installation in a 5.25-inch Bay CAUTION Screws used to mount the drive must not exceed 0.25-inch (6.25 millimeters) in length, or the drive may be damaged. Figure 3-14 shows the brackets representative of those used to mount the drive in a 5.25-inch bay. A bracket ki[...]

Installation 3 − 26 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3. Insert the RAID connector of the drive into the system backplane connector, being careful not to damage any connector pins. 4. Secure the drive in the RAID system with #6-32x1/4 UNC screws. Use the side mount or bottom mount holes, depending upon enclosure mounting hole[...]

Installation Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 3 − 27 3.6.9.3 Cables Furnish the appropriate cables and connectors to match the drive connectors listed in Table 3–7. Table 3–7 Connectors and Jumpers Connector/Jumper Quantum (or Vendor) Part Number 16-bit Wide SCSI (68-Pin) 68-pin SCSI connector Quantum 23-409326-01 (inclu[...]

Installation 3 − 28 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives[...]

Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 4- 1 Chapter 4 SPECIFICATIONS This chapter provides a detailed description of the physical, electrical, and environmental characteristics of the Quantum Atlas 10K II 160/m SCSI hard disk drives. 4.1 SPECIFICATION SUMMARY Table 4-1 Specifications DESCRIPTION QUANTUM ATLAS 10K II 9.1 GB QUANTUM A[...]

Specifications 4- 2 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table 4-1 Specifications (continued) DESCRIPTION QUANTUM ATLAS 10K II 9.1 GB QUANTUM ATLAS 10K II 18.2 GB QUANTUM ATLAS 10K II 36.4 GB QUANTUM ATLAS 10K II 72.8 GB Buffer Size 8 MB 8 MB 8 MB 8 MB RELIABILITY: Annualized Failure Rate (AFR) 1 No greater than 1.5% No greater th[...]

Specifications Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 4- 3 4.2 FORMATTED CAPACITY The Quantum Atlas 10K II Ultra 160/m SCSI hard disk drives receive a low-level format at the manufacturing facility. This formatting creates the actual tracks and sectors on the disk drive. Table 4-2 shows the storage capacities of the three different [...]

Specifications 4- 4 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 4.3 DATA TRANSFER RATES Table 4-3 shows the data transfer rates for the Quantum Atlas 10K II Ultra 160/m SCSI disk drives. Specifications are for both the 68-pin Wide and SCA-2 connector versions of the disk drive. Table 4-3 Transfer Rates DESCRIPTION QUANTUM ATLAS 10K II 9.[...]

Specifications Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 4- 5 4.4 TIMING SPECIFICATIONS Table 4-4 illustrates the timing specifications of the Quantum Atlas 10K II Ultra 160/m SCSI disk drives. Table 4-4 Timing Specifications DESCRIPTION QUANTUM ATLAS 10K II 9.2 GB QUANTUM ATLAS 10K II 18.4 GB QUANTUM ATLAS 10K II 36.7 GB QUANTUM ATLAS[...]

Specifications 4- 6 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 4.5 POWER The Quantum Atlas 10K II Ultra 160/m SCSI hard disk drive operates from two supply voltages: +12V ± 5% +5V ± 5% The allowable ripple and noise (60Hz – 100MHz) is 150 mV peak-to-peak, for the +12V supply and 75 mV peak-to-peak, for the +5V supply. 4.5.1 Power Se[...]

Specifications Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 4- 7 4.5.3 Power Requirements This section lists the various power specifications for the Quantum Atlas 10K II Ultra 160/m SCSI hard disk drives. 4.5.3.1 Power Consumption Maximum Watts 9.2 GB 18.4 GB 36.7 GB 73.4 GB Startup (Peak) 38.8 W* 38.8 W* 38.8 W* 47.6 W* 40% Seek (ECMA) [...]

Specifications 4- 8 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 4.5.3.3 Current Requirements Typical currents are at nominal supply voltages. Spin-Up Mode Typical / Maximum Current 9.2 GB 18.4 GB 36.7 GB 73.4 GB 5 Vdc Supply, Avg. 740.2 / 810* mA 686.0 / 820* mA 731.8 / 820* mA 719.5 / 820* mA 12 Vdc Supply, Avg. 2524.5 / 2850 mA, peak 2[...]

Specifications Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 4- 9 4.5.3.4 Current Transients Spin-Up Mode Max. Positive Rate of Change +2.0 A in 200 µs Max. Negative Rate of Change -2.0 A in 50 µs 12 Vdc Supply Regulations ± 5% Active Mode (ECMA Seeking) Max. Positive Rate of Change +1.0 A in 200 µs Max. Negative Rate of Change -1.0 A [...]

Specifications 4- 10 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 4.6 ACOUSTICS Table 4-6 specifies the acoustical characteristics of the Quantum Atlas 10K II Ultra 160/m SCSI hard disk drive. Acoustic measurements are taken in an anechoic chamber with background noise <25 dBA. Table 4-6 Acoustical Characteristics Acoustic Emissions (T[...]

Specifications Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 4- 11 4.8 ENVIRONMENTAL CONDITIONS Table 4-7 summarizs the environmental specifications of the Quantum Atlas 10K II Ultra 160/m SCSI hard disk drive. Table 4-7 Environmental Specifications PARAMETER OPERATING NON-OPERATING Temperature (Non-condensing) 5 ° to 55 ° C (41 ° to 13[...]

Specifications 4- 12 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table 4-8 Shock and Vibration Specifications PARAMETER OPERATING NON-OPERATING Shock 15 G peak linear half-sine, 11 ms duration (3 axes) (READ only) 63/10 G peak linear half-sine, 2 ms duration (3 axes) (READ/WRITE) Maximum Linear Shock (unpackaged): 1”: Maximum 70 G, 11 [...]

Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 1 Chapter 5 SCSI DESCRIPTION This chapter contains an overview of SCSI command and status processing and a detailed description of the commands supported by the disk drives. The SCSI command system enables the initiator to instruct the drive to perform specific functions. NOTE In this manua[...]

SCSI Description 5– 2 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 3 5.1 OVE RVIEW OF THE SCSI COMMAND DESCRIPTIONS The disk drives support the SCSI-3 commands listed in Table 5-1. The command categories are sequential , normal , and immediate. Immediate commands are processed when received by the drive. In most cases, these commands do no[...]

SCSI Description 5– 4 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives Table 5–1 Supported SCSI Commands (continued) Command Operation Code Category RELEASE 17h Sequential RELEASE (10) 57h Sequential REPORT LUNS A0h Sequential REPORT DEVICE IDENTIFIER A3h Sequential REQUEST SENSE 03h Immediate RESERVE 16h Sequential RESERVE (10) 56h Sequen[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 5 5.2 Command Descriptor Block An initiator communicates with the drive by sending a 6-, 10-, or 12-byte Command Descriptor Block (CDB) that contains the parameters for the specific command. The SCSI command's operation code is always the first byte in the CDB and a co[...]

SCSI Description 5– 6 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives Bit Byte 7654 3210 0 Operation Code 1 Reserved (MSB) Logical Block Address (LBA) 2 - 3 Logical Block Address (LBA) (LSB)) 4 Transfer Length, Parameter List Length, or Allocation Length 5 Control NOTE: Reserved fields in CDBs and Parameters have a value of 0; Reserved fiel[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 7 Table 5–2 Command Descriptor Block — Field Descriptions (continued) Field Description Logical Block Address The 6-byte READ, SEEK, and WRITE Command Descriptor Blocks contain a 21-bit Logical Block Address. The 10-, 12-, and 16- Command Descriptor Blocks contain a 32-[...]

SCSI Description 5– 8 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives Bit 76543210 Byte 5 Vendor Specific Reserved NACA Flag Link Figure 5–2 Command Descriptor Block Control Field — Data Format Table 5–3 Command Descriptor Block Control Field — Field Descriptions Field Description Vendor Specific Bits These bits must be 0. NACA Norm[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 9 5.3 Status/Error Reporting SCSI message-level errors are communicated by messages that are defined specifically for that purpose. SCSI command-level errors are communicated by a status that is returned by the drive during the STATUS phase. This phase occurs at the end of [...]

SCSI Description 5– 10 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives Table 5–4 Status Codes Status Code Definition Me aning 00h GOOD The drive successfully completed the command. 02h CHECK CONDITION An Auto Contingent Allegiance (ACA) condition occurred. 08h BUSY The drive cannot service the command at the moment, and its Command Descri[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 11 5.4 Auto Contingent Allegiance Condition and Contingent Allegiance Condition Auto Contingent Allegiance condition (ACA) is the SCSI-3 term for the condition of the drive immediately after it returns a CHECK CONDITION status code. While it is in this condition, the drive:[...]

SCSI Description 5– 12 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 13 5.5 Extended Contingent Allegiance Condition Under SCSI-2 processing, the Extended Contingent Allegiance condition extends Contingent Allegiance handling so the initiator has explicit control over the point at which suspended (queued) commands are resumed. It allows the [...]

SCSI Description 5– 14 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 15 5.6 Linked Commands An I/O Process (task) may contain multiple commands that are linked together. The initiator communicates this condition of linked (or unlinked) commands by setting (or clearing) the Link bit of the Command Descriptor Block’s control word. A linked c[...]

SCSI Description 5– 16 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 17 5.7 DATA Transfer Command Components Many of the SCSI commands cause data to be transferred between the initiator and the drive. The content and characteristics of this data are command-dependent. Table 5-5 lists the information transmitted for all of the commands. The ?[...]

SCSI Description 5– 18 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives Table 5–5 DATA-Phase Command Contents Length Data Out Data In Command in CDB (To Drive) (To Initiator) CHANGE DEFINITION 0 --- --- FORMAT UNIT 0 Defect List Header (4) --- Initialization Pattern (6-8) Defect Descriptors INQUIRY Allocation --- Standard Inquiry or a Vita[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 19 Table 5–5 DATA-Phase Command Contents (continued) Length Data Out Data In Command in CDB (To Drive) (To Initiator) SEEK (6)(10) 0 --- --- SEND DIAGNOSTIC Parameter List Diagnostic Page --- SET DEVICE IDENTIFIER START STOP UNIT 0 --- --- SYNCHRONIZE 0 --- --- CACHE TEST[...]

SCSI Description 5– 20 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 21 5.8 SCSI COMMAND DESCRIPTIONS The SCSI command descriptions that follow this page contain detailed information about the SCSI commands that are supported by the drive. Each description provides a Data Format and Field Descriptions for the Command Descriptor Block for the[...]

SCSI Description 5– 22 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 23 5.9 CHANGE DEFINITION Command (40h) The CHANGE DEFINITION command sets the SCSI compliance for disk drives with parallel SCSI interfaces to one of four different levels: SCSI-1, SCSI-1/CCS, SCSI-2 or SCSI-3. Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (40h) 1 Reserved 2 Re[...]

SCSI Description 5– 24 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives Table 5–6 CHANGE DEFINITION — Field Descriptions Field Description Save Save Parameters. When this field is set to 1, the new operating definition is saved in the drive's non-volatile memory. New Operating Definition The values that ca n be supplied in the field[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 25 5.10 FORMAT UNIT Command (04h) The FORMAT UNIT command formats the disk's storage media into initiator- addressable logical blocks according to initiator-defined options. This command ensures that the disk storage media is formatted so that all data sectors are acce[...]

SCSI Description 5– 26 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives FORMAT UNIT Command (04h) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (04h) 1 Reserved Fmt Data Cmp List Defect List Format 2 Vendor-Specific 3 - 4 Interleave 5 Control Figure 5–4 FORMAT UNIT Command Descriptor Block — Data Format Table 5–7 FORMAT UNIT Co[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 27 FORMAT UNIT Command (04h) (continued) 5.10.1 Five Forms of FORMAT UNIT Command s Five different forms of the FORMAT UNIT command are supported through different combinations of the Format Data bit, Complete List bit, and the information in the Defect List Length field. ([...]

SCSI Description 5– 28 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives FORMAT UNIT Command (04h) (continued) 5.10.2.1 FORMAT UNIT Defect List Header The FORMAT UNIT Defect List Header (Figure 5-6) provides several optional format control bits to give the initiator more control over the defect lists. Table 5-9 provides descriptions of the da[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 29 FORMAT UNIT Command (04h) (continued) Table 5–9 FORMAT UNIT Defect List Header — Field Descriptions (continued) Name Description DSP The Disable Saving Parameter prohibits the drive from preserving MODE SELECT parameters received while the Format is in progress. This[...]

SCSI Description 5– 30 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives FORMAT UNIT Command (04h) (continued) 5.10.2.3 FORMAT UNIT Defect Descriptor — Physical Sector and Bytes From Index Format The Physical Sector defect descriptor specifies the location of a defect that is the length of a sector. The Bytes From Index defect descriptor sp[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 31 FORMAT UNIT Command (04h) (continued) Table 5–10 FORMAT UNIT Initialization Pattern Descriptor — Field Descriptions Name Description IP Modifier The Initializat ion Pattern Modifier must be 0. IP Type The Initialization Pattern Type field (Table 5-11) indicates the t[...]

SCSI Description 5– 32 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 33 5.11 INQUIRY Command (12h) The INQUIRY command allows the initiator to determine the kind of SCSI devices attached to its SCSI bus. It causes a device that is attached to a SCSI bus to return information about itself. The drive identifies itself as a Direct Access Storag[...]

SCSI Description 5– 34 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives INQUIRY Command (12h) (continued) Table 5–12 INQUIRY Command Descriptor Block — Field Descriptions (continued) Field Description Page Code or Specifies the Vital Product Data Page or Command Support Data which is to Operation Code be returned by the drive when EVPD i[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 35 INQUIRY Command (12h) (continued) 5.11.1 Standard Inquiry Data Page The Standard Inquiry Data Page is returned by the drive in response to the INQUIRY command if EVPD = 0. Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier = 0 Peripheral Device Type = 0 (Direct Access Devic[...]

SCSI Description 5– 36 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives INQUIRY Command (12h) (continued) Table 5–13 Standard Inquiry Data Page — Field Descriptions Field Name Value Description Peripheral Qualifier 0 Non-zero if initiator selects an invalid logical unit. Peripheral Device Type 0 0 indicates that this is a Direct Access D[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 37 INQUIRY Command (12h) (continued) Table 5–13 Standard Inquiry Data Page — Field Descriptions (continued) Field Name Value Description Clocking 11 The contents of this field define the setting of the double-edge clocking option (See Chapter 6). Note that the clocking [...]

SCSI Description 5– 38 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives INQUIRY Command (12h) (continued) 5.11.2.2 Unit Serial Number Page (80h) The Unit Serial Number page contains the drive's PCB Serial Number and the HDA Serial Number . Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier = 000b Peripheral Device Type = 000h (Direct Acces[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 39 INQUIRY Command (12h) (continued) 5.11.2.3 Implemented Operating Definition Page (81h) The Implemented Operating Definition page reflects the current and available operation definitions. Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier = 0 Peripheral Device Type = 0 (Dire[...]

SCSI Description 5– 40 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives INQUIRY Command (12h) (continued) 5.11.2.4 ASCII Implemented Operating Definition Page (82h) The ASCII Implemented Operating Definition page returns the character string's length (1Bh) in byte 4, followed by the appropriate character string (“SCSI-3, SCSI- 2, SCSI[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 41 INQUIRY Command (12h) (continued) 5.11.2.5 Device Identification Page (83h) (SCSI-3 ONLY) The Device Identification Page provides the means to retrieve zero or more identification descriptors that apply to the logical unit. Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier[...]

SCSI Description 5– 42 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives INQUIRY Command (12h) (continued) Table 5–17 Device Identification Page — Field Descriptions Field Definition Code Set This field specifies the code set used for the Identifier field. Applicable values are: Value D escription 0h Reserved 1h The Identifier field conta[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 43 INQUIRY Command (12h) (continued) 5.11.2.6 Firmware Revision Page (C0h) The Firmware Revision page reflects the current firmware revision and date and time when it was built. Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier = 0 Peripheral Device Type = 0 (Direct Access De[...]

SCSI Description 5– 44 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives INQUIRY Command (12h) (continued) 5.11.2.7 Quantum Manufacturing Information Page (C1h) The Quantum Manufacturing Information Page reflects the part number assigned by Quantum’s manufacturing group in accordance with vendor requirements. Bit Byte 7 6 5 4 3 2 1 0 0 Rese[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 45 INQUIRY Command (12h) (continued) 5.11.2.8 Negotiated Rate Information Page (C4h) Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier = 0 Peripheral Device Type = 0 (Direct Access Device) 1 Page Code (C4h) 2 Reserved 3 Page Length = 4h 4 Transfer Period Factor 5 REQ / ACK Of[...]

SCSI Description 5– 46 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives INQUIRY Command (12h) (continued) Table 5–17A Negotiated Rate Information Page — Field Descriptions Field Definition Transfer Period Factor Applicable values of this field are provided in Appendix C. REQ / ACK Offset This is the negotiated value of Req / Ack offset b[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 47 INQUIRY Command (12h) (continued) 5.11.2.9 Command Support Data Pages An application client can request command support data by setting the CmdDt bit of the INQUIRY command to 1, and specifying the SCSI operation code of the Command Descriptor Block (CDB) for which it wa[...]

SCSI Description 5– 48 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives INQUIRY Command (12h) (continued) Table 5–18 Command Support Data Page — Field Descriptions Field Description Support The value of the Support field describes the ty pe of support that the disk drive provides for Command Support Data. Value Description 000b Data abou[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 49 INQUIRY Command (12h) (continued) Table 5–19 Command Support Data Page Command or Operation Codes Hex Data Returned When INQUIRY is Received and CmdDt Bit = 1 ANSI CDB CDB OpCode Command Support Version Size Usage Data 00h TEST UNIT R EADY 03 01 06 00E000000003 01h REZ[...]

SCSI Description 5– 50 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives INQUIRY Command (12h) (continued) Table 5–19 Command Support Data Page Command or Operation Codes (continued) Hex Data Returned When INQUIRY is Received and CmdDt Bit = 1 Op ANSI CDB CDB Code Command Support Version Size Usage Data 3Eh READ LONG 03 01 0A 3EE2FFFFFFFF00[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 51 5.12 LOG SELECT Command (4Ch) The drive collects and stores performance data and error summaries in counters. The LOG SELECT command is used to zero these counters. The LOG SELECT command is a complementary command to the LOG SENSE command Bit Byte 7 6 5 4 3 2 1 0 0 Oper[...]

SCSI Description 5– 52 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 53 5.13 LOG SENSE Command (4Dh) NOTE Log Sense data pages require special interpretation and also are subject to change. For assistance with the Log Sense data pages, contact your Quantum Applications Engineer. The drive collects operational information and stores these sta[...]

SCSI Description 5– 54 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives Table 5 − 21 Disk Drive Log Pages Page Code Description 00h Supported Log Pages 01h Buffer Overruns and Underruns 02h Write Error Counter 03h Read Error Counter 05h Verify Error Counter 06h Non-Medium Error Counter Page 07h Last n-Error Events Page 08h Format Status Pa[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 55 LOG SENSE Command (4Dh) (continued) 5.13.1 LOG SENSE Command Descriptor Block The Command Descriptor Block for the LOG SENSE command is shown in Figure 5 − 21. Table 5–22 contains field descriptions. Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (4Dh) 1 Reserved PPC SP 2[...]

SCSI Description 5– 56 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives LOG SENSE Command (4Dh) (continued) 5.13.2 LOG SENSE Log Pages The log pages that are returned from the drive have a common format that is shown in Figure 5 − 22. Each page contains a 4-byte header followed by one or more log parameters. Refer to Table 5 − 23. Bit By[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 57 LOG SENSE Command (4Dh) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 – 1 Parameter Code 2 DU DS TSD ETC TMC LP 3 Page Length (n-3) 4 – n Parameter Value Figure 5 − 23 Generic Log Parameter − Data Format Table 5 − 24 Generic Log Parameter − Field Descriptions Field [...]

SCSI Description 5– 58 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 59 5.14 MODE SELECT (6) Command (15h) SCSI refers to the drive’s operational parameters as its mode parameters . SCSI groups the mode parameters by function into a set of data structures referred to as mode pages . The MODE SELECT (6) command allows the initiator to modif[...]

SCSI Description 5– 60 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) 5.14.1 Initiator-Changeable Mode Pages Table 5-26 lists the mode pages that are supported by the drive. An initiator can change these pages by supplying them, with the desired changes included, in the MODE SELECT command’s data[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 61 MODE SELECT (6) Command (15h) (continued) 5.14.2 Mode Page Types The drive maintains three distinct sets of mode pages. They are the current page , the default page , and the saved page . The drive also reports a fourth set of changeable pages. The page types are defined[...]

SCSI Description 5– 62 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–28 Mode Parameter List — Field Descriptions Field Description Mode Parameter Header Contains information about th e remainder of the parameter list and is always present (see Figure 5-26 and Table 5-29). Block Descrip[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 63 MODE SELECT (6) Command (15h) (continued) Table 5–30 Mode Parameter Block Descriptor — Field Descriptions Field Description Density Code Ignored by the drive. Number of Blocks This field specifies the number of logical bl ocks on the unit that are affected by the cur[...]

SCSI Description 5– 64 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) COMMAND (15h) (continued) 5.14.3.2 Unit Attention Condition Page (00h) The Unit Attention Page is used to enable or disable the generation of Unit Attention Conditions. Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsvd Page Code (00h) 1 Page Length (02h) 2 Reserved DUA [...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 65 MODE SELECT (6) Command (15h) (continued) 5.14.3.3 Read-Write Error Recovery Page (01h) The Read-Write Error Recovery page controls the drive’s response to error conditions that arise during the course of READ (6), READ (10), WRITE (6), WRITE (10) command processing an[...]

SCSI Description 5– 66 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–33 Read-Write Error Recovery Page — Field Descriptions Default Field Value Description PS 1 Parameters Savable. This bit is only used with the MODE SENSE command. A returned value of 1 indicates that the target is cap[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 67 MODE SELECT (6) Command (15h) (continued) Table 5–33 Read-Write Error Recovery Page — Field Descriptions (continued) Default Field Value Description Read Retry Count 4 Specifies the number of retries attempted for a fa iled read operation. Correction Span 170 Specifi[...]

SCSI Description 5– 68 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) 5.14.3.4 Disconnect–Reconnect Page (02h) The Disconnect–Reconnect Page provides the application client the means to attempt to optimize the performance of the delivery subsystem. Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsvd Page Code ([...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 69 MODE SELECT (6) Command (15h) (continued) Table 5–34 Disconnect–Reconnect) — Field Descriptions De fault Field Value Description PS 0 Parameters Savable. This bit is only used with the MODE SENSE command. A returned value of 1 indicates that the target is capable o[...]

SCSI Description 5– 70 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–34 Disconnect–Reconnect Page — Field Descriptions (continued) Default Field Value Description DTDC Data Transfer Disconnect Control. This field of three bits defines further restrictions when a disconnect is permitt[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 71 MODE SELECT (6) Command (15h) (continued) 5.14.3.5 Verify Error Recovery Page (07h) The Verify Error Recovery Page controls the drive’s response to error conditions that arise during the VERIFY command and during the verify operation of the WRITE AND VERIFY command. Th[...]

SCSI Description 5– 72 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–35 Verify Error Recovery Page — Field Descriptions Default Field Value Description PS 0 Parameters Savable. This bit is only used with the MODE SENSE command. A returned value of 1 indicates that the target is capable[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 73 MODE SELECT (6) Command (15h) (continued) 5.14.3.6 Caching Page (08h) The Caching Page controls the drive’s cache management policy. Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsvd Page Code (08h) 1 Page Length (12h) 2 Reserved WCE MF RCD 3 Demand Read Retention Priority Demand Wri[...]

SCSI Description 5– 74 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–36 Caching Page — Field Descriptions Default Field Value Description PS 1 Parameters Savable. This bit is only used with the MODE SENSE command. A returned value of 1 indicates that the target is capable of saving the[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 75 MODE SELECT (6) Command (15h) (continued) Table 5–36 Caching Page — Field Descriptions (continued) Default Field Value Description Minimum Pre-fetch 0 This field indicates the number of sectors that are to be pre-fetched. See also MF. Maximum Pre-fetch 0421h This fie[...]

SCSI Description 5– 76 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) 5.14.3.7 Control Mode Page (0Ah) The Control Mode page controls the drive’s command processing and error handling policies. Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsvd Page Code (0Ah) 1 Page Length (0Ah) 2 Reserved GLTSD RLEC 3 Queue Al[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 77 MODE SELECT (6) Command (15h) (continued) Table 5–37 Control Mode Page — Field Descriptions Field Value Default Description PS 1 Parameters Savable. This bit is only used with the MODE SENSE command. A returned value of 1 indicates that the target is capable of savin[...]

SCSI Description 5– 78 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–37 Control Mode Page — Field Descriptions (continued) Field Value Default Description DQue 0 Disable Queue. When set to the default value of 0, the drive supports tagged command queuing. When the Disable Queue bit is [...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 79 MODE SELECT (6) Command (15h) (continued) 5.14.3.8 Notch and Partition Page (0Ch) The Notch and Partition page contains parameters for drives that implement a variable number of sectors per cylinder, and, support this page. Each section of the logical unit with a differe[...]

SCSI Description 5– 80 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–38 Notch and Partition Page — Field Descriptions Default Data Field Value De scription PS 0 Parameters Savable. This bit is only used with the MODE SENSE command. The returned value of 0 indicates that the target is n[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 81 MODE SELECT (6) Command (15h) (continued) Table 5–38 Notch and Partition Page — Field Descriptions (continued) Default Data Field Value Description Ending Boundary 9GB: 0043B9h, The ending boundary field either indicates the ending of 02h the active notch or, if the [...]

SCSI Description 5– 82 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) 5.14.3.9 XOR Control Mode Page (10h) The XOR Control Mode Page provides the initiator with the means to obtain/modify certain XOR operating parameters of the target. Bit Byte 7654 3210 0 PS Rsvd Page Code (10h) 1 Page Length (16h[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 83 MODE SELECT (6) Command (15h) (continued) Table 5–39 XOR Control Page − Field Descriptions Field Default Value Description PS 1 Parameters Savable. This bit is only used with the MODE SENSE command. A returned value of 1 indicates that the target is capable of saving[...]

SCSI Description 5– 84 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) 5.14.3.10 Power Condition Page (1Ah) The Power Condition Page controls disk drive Power Management functions. Power Management provides three sub-states of UNIT READY: • ACTIVE This is the state of highest power consumpt ion fo[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 85 MODE SELECT (6) Command (15h) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 PS Page Code (1Ah) 1 Page Length (0Ah) 2 Reserved 3 Reserved IdlEnb SbyEnb 4 - 7 Idle Timer 8 - 11 Standby Timer Figure 5–36 Po wer Condition Page – Data Format[...]

SCSI Description 5– 86 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–40 Power Condition Page – Field Descriptions Default Field Value Description PS 0 Parameters Savable. This bit is only used with the MODE SENSE command. A returned value of 1 indicates that the target is capable of sa[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 87 MODE SELECT (6) Command (15h) (continued) 5.14.3.11 Information Exceptions Control Page (1Ch) This page defines the methods used by the disk drive to control the reporting and operations of specific informational exception conditions. This page applies only to informatio[...]

SCSI Description 5– 88 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–41 Information Exceptions Control Page — Field Descriptions (continued) Field Default Value Description EWASC 1 Enable Warning ASC. When this bit = 0, reporting of thermal warming is disabled. When this bit = 1, therm[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 89 MODE SELECT (6) Command (15h) (continued) Table 5–41 Information Exceptions Control Page — Field Descriptions (continued) Field Default Value Description Interval Timer 0 This field indicates the period, in 100 millisecond increments, for reporting that an informatio[...]

SCSI Description 5– 90 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–42 Codes Used by the MRIE Field Field Description 0h No reporting of informational exception condition. This method instructs the disk drive not to report these conditions. 1h Asynchronous Event Reporting. This method o[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 91 MODE SELECT (6) Command (15h) (continued) 5.14.3.12 Quantum-Unique Page (39h) This Quantum-unique page is implemented for historical purposes only. All unused fields are changeable but are ignored by the drive. Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsv’d Page Code (39h) 1 Page[...]

SCSI Description 5– 92 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–43 Quantum-Unique Page — Field Descriptions Field Default Description PS 1 Parameters Savable. This bit is only used with the MODE SENSE command. A returned value of 1 indicates that the disk drive is capable of savin[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 93 MODE SELECT (6) Command (15h) (continued) Table 5–43 Quantum-Unique Page — Field Descriptions (continued) Field Default Description SSSIE 0 Software Selectable SCSI ID Enable. When this field = 0, the disk drive’s SCSI ID is determined via the disk drive’s hardwa[...]

SCSI Description 5– 94 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–43 Quantum-Unique Page — Field Descriptions (continued) Field Default Description Auto Master Enable 0 When this field = 0, this disk drive does not act as the master in a storage array configuration (refer to the Har[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 95 MODE SELECT (6) Command (15h) (continued) Table 5–43 Quantum-Unique Page — Field Descriptions (continued) Field Default Description Stagger Spin Delay 28h The Stagger Spin Delay is a value in 100 millisecond units that is used to determine the length of the period of[...]

SCSI Description 5– 96 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–43 Quantum-Unique Page — Field Descriptions (continued) Field Default Description ManCal 0 Manual Calibration. When set = 0, the disk drive runs calibration and diagnostic procedures periodically. When set = 1, calibr[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 97 MODE SELECT (6) Command (15h) (continued) Table 5–43 Quantum-Unique Page — Field Descriptions (continued) Field Default Description ESL 0 Enable Save Log. When set = 1, saving and loading of non- SMART pages to/from the MCS area is enabled. IMR 0 Infinite Message Ret[...]

SCSI Description 5– 98 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (6) Command (15h) (continued) Table 5–43 Quantum-Unique Page — Field Descriptions (continued) Field Default Description Maximum Slots to be Reserved 0 This field is used to reserve x amount of slots from the total resources within the disk drive for incom[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 99 5.15 MODE SELECT (10) Command (55h) The MODE SELECT (10) command allows the initiator to modify certain mode pages and thereby control some of the drive’s operational characteristics. Refer to MODE SELECT (6) for additional descriptions. See Figure 5-39 for the data fo[...]

SCSI Description 5– 100 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SELECT (10) Command (55h) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 - 3 (MSB) Number of Blocks (LSB) 4 Density Code 5 - 7 (MSB) Block Length (LSB) Figure 5–41 Mode Parameter Block Descriptor — Data Format Table 5–44 Mode Parameter Block Descriptor — Field Desc[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 101 This page intentionally left blank.[...]

SCSI Description 5– 102 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives This page intentionally left blank.[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 103 5.16 MODE SENSE (6) Command (1Ah) The MODE SENSE (6) command allows the initiator to read the drive's sector descriptor and mode pages. The MODE SENSE Command Descriptor Sector is shown in Figure 5–42 and the data fields are described in Table 5–45. The Mode Pa[...]

SCSI Description 5– 104 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SENSE (6) Command (1Ah) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 Mode Data Length 1 Medium Type 2 Device-Specific Parameter 3 Block Descriptor Length Figure 5–43 Mode Parameter Header (6 Byte) — Data Format Table 5–46 Mode Parameter Header — Field Description[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 105 MODE SENSE (6) Command (1Ah) (continued) 5.16.2 Format Device Page (03h) The Format Drive Page (Figure 5-44) describes the drive's medium format. The data fields are described in Table 5-48. Note that the page is savable but no parameters are changeable . Bit Byte [...]

SCSI Description 5– 106 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SENSE (6) Command (1Ah) (continued) Table 5–48 Format Device Page — Field Descriptions Field Value Description PS 1 Parameters Savable. This bit is only used with the MODE SENSE command. This bit is reserved with the MODE SELECT command. A PS bit value of 1 ind[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 107 MODE SENSE (6) Command (1Ah) (continued) 5.16.3 Rigid Disk Geometry Page (04h) The Rigid Disk Geometry Page describes the drive geometry. Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsvd Page Code (04h) 1 Page Length (16h) 2 - 4 Number of Cylinders 5 Number of Heads 6 - 8 Starting Cy[...]

SCSI Description 5– 108 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SENSE (6) Command (1Ah) (continued) Table 5–49 Rigid Disk Geometry Page — Field Descriptions Field Value Description PS 1 Parameters Savable. This bit is only used with the MODE SENSE command. A returned value of 1 indicates that the target is capable of saving[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 109 MODE SENSE (6) Command (1Ah) (continued) Table 5–49 Rigid Disk Geometry Page — Field Descriptions (continued) Field Value Description Rotational Offset 0 Rotational Offset indicates the amount of rotational offset that the drive uses when synchronized. The rotationa[...]

SCSI Description 5– 110 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SENSE (6) Command (1Ah) (continued) 5.16.4 Vendor-Unique Caching Page (38h) The Vendor-Unique Caching Page is a read-only page that reports the number of segments in the drive's cache memory. Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsv’d Page Code (38h) 1 Page Length [...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 111 5.17 MODE SENSE (10) COMMAND (5Ah) The MODE SENSE command allows the initiator to read the drive’s sector descriptor and mode pages. See Figure 5-47 for MODE SENSE (10) Command Descriptor Block – Data Format, Figure 5-48 for Mode Parameter Header (10 Byte) — Data [...]

SCSI Description 5– 112 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives MODE SENSE (10) COMMAND (5Ah) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 Density Code 1 - 3 (MSB) Number of Blocks (LSB) 4 Reserved 5 - 7 (MSB) Block Length (LSB) Figure 5–49 Mode Parameter Block Descriptor — Data Format Table 5–51 Mode Parameter Header & Block De[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 113 5.18 PERSISTENT RESERVATION IN Command (5Eh) The PERSISTENT RESERVATION IN command is a 10-byte command used to obtain information about persistent reservations and reservations that are active within a device server. It is used in conjunction with the PERSISTENT RESERV[...]

SCSI Description 5– 114 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives PERSISTENT RESERVATION IN Command (5Eh) (continued) Table 5–52 PERSISTENT RESERVATION IN Command — Field Descriptions Data Field Description Service Action Service actions that require information about persistent reservation and registrations may require enabling o[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 115 PERSISTENT RESERVATION IN Command (5Eh) (continued) The figure and table below illustrate and describe the data fields of Read Key data parameters. Bit Byte 7 6 5 4 3 2 1 0 0 - 3 (MSB) Generation (LSB) 4 - 7 (MSB) Additional Length ( n – 7) (LSB) (Reservation Key List[...]

SCSI Description 5– 116 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives PERSISTENT RESERVATION IN Command (5Eh) (continued) The figure and table below illustrate and describe the data fields of Read Reservations data parameters. Bit Byte 7 6 5 4 3 2 1 0 0 - 3 (MSB) Generation (LSB) 4 - 7 (MSB) Additional Length ( n – 7) (LSB) 8 - n (MSB) [...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 117 PERSISTENT RESERVATION IN Command (5Eh) (continued) The figure and table below illustrate and describe the data fields of each Read Reservations descriptor’s data fields. Bit Byte 7 6 5 4 3 2 1 0 0 - 7 (MSB) Reservation Key (LSB) 8 - 11 (MSB) Scope-Specific Address (L[...]

SCSI Description 5– 118 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives PERSISTENT RESERVATION IN Command (5Eh) (continued) Table 5–55 PERSISTENT RESERVATION IN Read Reservations Descriptor — Field Descriptions (continued) Data Field Description Scope The value in this field indicates whether a persistent reservation applies to an entir[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 119 PERSISTENT RESERVATION IN Command (5Eh) (continued) Table 5-56 presents the definitions of the characters of the available “Type” values from the Type field of the PERSISTENT RESERVATION IN Read Reservations parameters. Each of the codes provides handling instructio[...]

SCSI Description 5– 120 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives PERSISTENT RESERVATION IN Command (5Eh) (continued) Table 5–56 Persistent Reservation Type Codes and Their Meanings (continued) Code Name Description 3h Exclusive Access READS: Exclusive; any command from any initiator other than the initiator holding the persistent r[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 121 PERSISTENT RESERVATION IN Command (5Eh) (continued) Table 5–56 Persistent Reservation Type Codes and Their Meanings (continued) Code Name Description 6h Exclusive Registrants Only READS: Exclusive; any command from an initiator that has not previously performed a Regi[...]

SCSI Description 5– 122 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives PERSISTENT RESERVATION IN Command (5Eh) (continued) Table 5-57 represents graphically all possible combinations of Persistent Reservations Being Attempted when Persistent Reservations are already held for each of the types of persistent reservations. Table 5-57 When Do [...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 123 5.19 PERSISTENT RESERVATION OUT Command (5F h) The PERSISTENT RESERVATION OUT command is a 10-byte command used to reserve a logical unit or an extent within a logical unit for the exclusive or shared use by an initiator. The command is used in conjunction with the PERS[...]

SCSI Description 5– 124 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives PERSISTENT RESERVATION OUT Command (5Fh) (continued) Table 5–58 PERSISTENT RESERVATION OUT Command — Field Descriptions Data Field Description Service Action Service actions that require information about persistent reservation and registrations may require enabling[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 125 PERSISTENT RESERVATION OUT Command (5Fh) (continued) Table 5–58 PERSISTENT RESERVATION OUT Command — Field Descriptions (continued) Data Field Description Scope The value in this field indicates whether a persistent reservation applies to an entire logical unit, to [...]

SCSI Description 5– 126 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives PERSISTENT RESERVATION OUT Command (5Fh) (continued) Table 5–58 PERSISTENT RESERVATION OUT Command — Field Descriptions (continued) Data Field Description Type The value of the Type field specifies the characteristics of the persistent reservation being established [...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 127 PERSISTENT RESERVATION OUT Command (5Fh) (continued) Table 5–59 PERSISTENT RESERVATION OUT Command’s Service Action Descriptions (continued) Code Name Description 01h Reserve A PERSISTENT RESERVATION OUT command with Reserve service action creates a persistent reser[...]

SCSI Description 5– 128 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives PERSISTENT RESERVATION OUT Command (5Fh) (continued) Table 5–59 PERSISTENT RESERVATION OUT Command’s Service Action Descriptions (continued) Code Name Description 03h Clear A PERSISTENT RESERVATION OUT command with a successful Clear service action removes all persi[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 129 PERSISTENT RESERVATION OUT Command (5Fh) (continued) Table 5–59 PERSISTENT RESERVATION OUT Command’s Service Action Descriptions (continued) Code Name Description 05h Pre-empt & Clear A PERSISTENT RESERVATION OUT command with a Pre-empt & Clear service actio[...]

SCSI Description 5– 130 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives PERSISTENT RESERVATION OUT Command (5Fh) (continued) Table 5-60 presents the definitions of the characters of the available “Type” values from the Type field of the PERSISTENT RESERVATION IN Read Reservations parameters. Each of the codes provides handling instructi[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 131 PERSISTENT RESERVATION OUT Command (5Eh) (continued) Table 5–60 Persistent Reservation Type Codes and Their Meanings (continued) Code Name Description 3h Exclusive Access READS: Exclusive; any command from any initiator other than the in itiator holding the persistent[...]

SCSI Description 5– 132 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives PERSISTENT RESERVATION OUT Command (5Eh) (continued) Table 5–60 Persistent Reservation Type Codes and Their Meanings (continued) Code Name Description 6h Exclusive Registrants Only READS: Exclusive; any command from an initiato r that has not previously performed a Re[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 133 PERSISTENT RESERVATION OUT Command (5Eh) (continued) Table 5–61 PERSISTENT RESERVATION OUT Parameter List — Field Descriptions Data Field Description Reservation Key This field contains an 8-byte token that is provided by the application client to the device server [...]

SCSI Description 5– 134 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives PERSISTENT RESERVATION OUT Command (5Eh) (continued) The table below illustrates which fields are set by the application client and interpreted by the device server for each Service and Scope value. Table 5–62 Device Server Interpretation of Service and Scope Value Pa[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 135 5.20 READ (6) Command (08h) The READ (6) command requests that data be transferred from the drive to the initiator. The amount of data transferred is specified by the transfer length field. The starting point is specified by the logical sector address. Bit Byte 7 6 5 4 [...]

SCSI Description 5– 136 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 137 5.21 READ (10) Command (28h) The READ (10) command requests that data be transferred from the drive to the initiator. The amount of data transferred is specified by the transfer length field. The starting point is specified by the logical sector address. Bit Byte 7 6 5 [...]

SCSI Description 5– 138 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 139 5.22 READ BUFFER Command (3Ch) The READ BUFFER command is used in conjunction with the WRITE BUFFER command. It allows the initiator to gain access to the data storage areas within the drive's controller. In particular, these two commands are used to check the inte[...]

SCSI Description 5– 140 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives READ BUFFER Command (3Ch) (continued) Table 5–65 READ BUFFER Command — Field Descriptions Field Description Mode Four modes are supported by the drive; Combined Header and Data, Data Only, Descriptor Only, and Read Data from Echo Buffer. The permissible values for B[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 141 5.23 READ CAPACITY Command (25h) The READ CAPACITY command reports formatted capacity and track-boundary information. Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (25h) 1 Reserved RelAdr 2 - 5 Logical Block Address 6 - 7 Reserved 8 Reserved PMI 9 Control Figure 5–59 READ[...]

SCSI Description 5– 142 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives READ CAPACITY Command (25 h) (continued) Figure 5-60 shows the READ CAPACITY Returned Data - Data Format that shall be sent during the data-in buffer transfer for the command. Refer to the PMI description in Table 5-66 for a description of these data fields. Bit Byte 7 [...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 143 5.24 READ DEFECT DATA Command (10) (37h) The READ DEFECT DATA (10) command directs the drive to report defect information about the drive’s medium. Refer to the FORMAT UNIT command for information about defects. The data sent to the host in the command’s data-in buf[...]

SCSI Description 5– 144 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives READ DEFECT DATA Command (10) (37h) (continued) Table 5–67 READ DEFECT DATA (10) Command — Field Descriptions (continued) Field Description Defect List Format This field specifies the format in which the defect descriptors are to be returned. The supported formats a[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 145 READ DEFECT DATA Command (10) (37h) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 Reserved 1 Reserved Plist Glist Defect List Format 2 - 3 Defect List Length Figure 5–64 Defect List Header — Data Format Table 5–68 Defect List Header — Field Descriptions Field Descripti[...]

SCSI Description 5– 146 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 147 5.25 READ DEFECT DATA Command (12) (B7h) The READ DEFECT DATA (12) command directs the drive to report defect information about the drive’s medium. Refer to the FORMAT UNIT command for information about defects. The data sent to the host in the command’s data-in buf[...]

SCSI Description 5– 148 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives READ DEFECT DATA Command (12) (B7h) (continued) Table 5–69 READ DEFECT DATA (12) Command — Field Descriptions (continued) Field Description Defect List Format This field specifies the format in which the defect descriptors are to be returned. The supported formats a[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 149 READ DEFECT DATA Command (12) (B7h) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 Reserved 1 Reserved Plist Glist Defect List Format 2 - 3 Reserved 4 - 7 Defect List Length Figure 5–68 Defect List Header — Data Format Table 5–70 Defect List Header — Field Descriptions [...]

SCSI Description 5– 150 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 151 5.26 READ LONG Command (3Eh) The READ LONG command is used in conjunction with the WRITE LONG command to allow the initiator to issue raw reads and writes of physical data blocks, but address them as logical blocks with an assumed sector length of 512 bytes. These two c[...]

SCSI Description 5– 152 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives READ LONG Command (3Eh) (continued) Figure 5–70 shows the format of the data that is returned during the READ LONG Command 's data-in buffer transfer. The returned data always consists of 512 bytes of data, followed by a two LBA bytes, two EDC bytes, and 46 ECC-r[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 153 5.27 READ SKIP MASK Command (E8h) The READ SKIP MASK command allows the initiator to condition the function of the READ commands to allow only selected data to be transferred over the SCSI interface. A READ SKIP MASK command preceeds a READ (10) command; the READ (10) c[...]

SCSI Description 5– 154 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 155 5.28 REASSIGN BLOCKS Command (07h) The REASSIGN BLOCKS Command reassigns one or more logical blocks to a spare location(s) set aside for this purpose and records the reassignments in the Grown Defect List . No command-specific Control Descriptor Block fields affect the [...]

SCSI Description 5– 156 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives REASSIGN BLOCKS Command (07h) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 - 3 Defect Logical Block Address Figure 5–74 REASSIGN BLOCKS Defect Descriptor — Data Format The drive returns a CHECK CONDITION status if it cannot complete the command. If this happens because th[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 157 5.29 RECEIVE DI AGNOSTIC RESULTS Command (1Ch) The RECEIVE DIAGNOSTIC RESULTS command fetches the results of the last SEND DIAGNOSTIC command sent to the drive. The drives support the diagnostic pages listed in Table 5-74. Table 5–74 Diagnostic Pages Supported by The [...]

SCSI Description 5– 158 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives RECEIVE DIAGNOSTIC RESULTS Command (1Ch) Table 5-75 RECEIVE DIAGNOSTIC RESULTS Command Descriptor Block— Field Descriptions Field Description Allocation Length Specifies the number of bytes of diagnostic-page results the drive is allowed to send to the initiator. A CH[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 159 RECEIVE DIAGNOSTIC RESULTS Command (1Ch) (continued) 5.29.1 Supported Diagnostics Page s Page (00h) Figure 5-76 shows the format of the Supported Diagnostics Page s page. Bit Byte 7 6 5 4 3 2 1 0 0 Page Code (00h) 1 Reserved 2 - 3 Page Length (0002h) 4 Supported Diagnos[...]

SCSI Description 5– 160 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives RECEIVE DIAGNOSTIC RESULTS Command (1Ch) (continued) 5.29.2 Translate Address Page (40h) The Translate Address Page allows the initiator to translate a logical sector address, physical address, or physical bytes for an index address into any one of the other formats. Th[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 161 RECEIVE DIAGNOSTIC RESULTS Command (1Ch) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (40h) 1 Reserved 2 - 3 Page Length (2 + (8 x n )) (where n = number of sectors / LBA) 4 Reserved Supplied Format = 000b (LBA) 5 RAREA ALTSEC ALTTRK Reserved Translate Format =[...]

SCSI Description 5– 162 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives RECEIVE DIAGNOSTIC RESULTS Command (1Ch) (continued) Table 5–76 Translate Address Page — Field Descriptions Field Description Supplied Format The Supplied Format field specifies the format of the following Translate Address field. Must be 000b, which specifies the L[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 163 5.30 RELEASE (6) Command (17h) The RELEASE and the RESERVE commands are used for contention resolution in multiple -initiator systems. The RELEASE command is used to release a previously reserved logical unit. The drive will not return an error if the initiator attempts[...]

SCSI Description 5– 164 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 165 5.31 RELEASE (10) Command (57h) The RELEASE and the RESERVE commands are used for contention resolution in multiple -initiator systems. The RELEASE (10) command is used to release a previously reserved logical unit. The drive will not return an error if the initiator at[...]

SCSI Description 5– 166 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives RELEASE (10) Command (57h) (continued) Table 5–78 RELEASE (10) Command — Field Descriptions Field Description 3rdPty Third Party Release allows an initiator to release a logical unit that was previously reserved. If the value in this field is 0, third party release [...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 167 5.32 REPORT DEVICE IDENTIFIER Command (A3h) The REPORT DEVICE IDENTIFIER command requests that the device server send device identification to the application client Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (A3h) 1 Reserved Service Action (05h) 2 – 5 Reserved 6 – 9[...]

SCSI Description 5– 168 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives REPORT DEVICE IDENTIFIER Command (A3h) (continued) The REPORT DEVICE IDENTIFIER command’s parameter list contains a 4-byte field that provides the length, in bytes, of the parameter list and the logical unit’s identifier. Bit Byte 7 6 5 4 3 2 1 0 0 – 3 (MSB) Ident[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 169 5.33 REPORT LUNS Comm and (A0h) The REPORT LUNS command requests that the peripheral device logical unit numbers of known logical units in the target disk be sent to the applications client. The command only returns information about the logical units to which commands [...]

SCSI Description 5– 170 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives REPORT LUNS Command (0Ah) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 - 3 (MSB) LUN List Length (n – 7) (LSB) 4 - 7 Reserved 8 - 15 (MSB) LUN (first LUN) (LSB) • • • • • • n-7 – n LUN (last LUN, if more than one) Figure 5–83 LUN Reporting Parameter List —[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 171 5.34 REQUEST SENSE Command (03h) The REQUEST SENSE command causes the drive to transfer detailed sense data to the initiator. The drive maintains sense data on an individual initiator basis. Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (03h) 1 - 3 Reserved 4 Allocation Len[...]

SCSI Description 5– 172 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives REQUEST SENSE Command (03h) (continued) 5.34.2 Clearing Sense Data Sense data is cleared from the drive's memory by one of the following conditions: • After being returned from a REQUEST SENSE command. • As soon as any other command is received from the initiat[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 173 REQUEST SENSE Command (03h) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 Valid Error Code (70h or 71h) 1 Segment Number = 00h 2 FileMrk = 0 EOM = 0 ILI Rsvd Sense Key 3 - 6 Information 7 Additional Sense Length = 0Ah 8 - 11 Command-Specific Information 12 Additional Sense Cod[...]

SCSI Description 5– 174 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives REQUEST SENSE Command (03h) (continued) Table 5–83 Sense Data Fields (Error Code 70h) — Field Descriptions Field Definition Valid The Valid bit, when set to 1, indicates that the Informatio n field contains valid information, as defined below. When set to 0, it indi[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 175 REQUEST SENSE Command (03h) (continued) Table 5–83 Sense Data Fields (Error Code 70h) — Field Descriptions (continued) Field Definition Field Replaceable Unit The Field Replaceable Unit Code specifies a unit that has failed: Code FRU 1 Host 2 Hard Disk Assembly (HDA[...]

SCSI Description 5– 176 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives REQUEST SENSE Command (03h) (continued) Table 5–84 Supported Sense Key s (continued) Sense Key Code Description ILLEGAL REQUEST 5h The drive detected an illegal parameter in the Command Descriptor Block or in the additional parameters supplied as data for some command[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 177 REQUEST SENSE Command (03h) (continued) Table 5–85 Sense Key Information Field Contents Command Sense Key Field Contents FORMAT UNIT RECOVERED ERROR The addre ss of the first bad sector encountered during the format operation. This sector, and all other bad sectors fo[...]

SCSI Description 5– 178 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives REQUEST SENSE Command (03h) (continued) Table 5–85 Sense Key Information Field Contents (continued) Command Sense Key Field Contents WRITE(6)(10) RECOVERED/MEDIUM ERROR The address of the first bad sector found during the write. (Possible only when PER=1, DTE=0, and D[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 179 REQUEST SENSE Command (03h) (continued) Table 5–86 Supported Additional Sense Codes and Sense Code Qualifiers (in Hex) Sense Key Sense Code Sense Qualifier Meaning 00h NO SENSE 00 00 No Specific Sense Key Information to be Reported for Designated Logical Unit 0B 01 SM[...]

SCSI Description 5– 180 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives REQUEST SENSE Command (03h) (continued) Table 5–86 Supported Additional Sense Codes and Sense Code Qualifiers (in Hex) (continued) Sense Key Sense Code Sense Qualifier Meaning 01h RECOVERED ERROR (continued) 17 00 Recovered Data, No Error Correction Applied 17 01 Reco[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 181 REQUEST SENSE Command (03h) (continued) Table 5–86 Supported Additional Sense Codes and Sense Code Qualifiers (in Hex) (continued) Sense Key Sense Code Sense Qualifier Meaning 02h NOT READY (continued) 04 83 Error Reading Diskware File 04 84 Diskware Not Loaded Yet ?[...]

SCSI Description 5– 182 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives REQUEST SENSE Command (03h) (continued) Table 5–86 Supported Additional Sense Codes and Sense Code Qualifiers (continued) Sense Key Sense Code Sense Qualifier Meaning 03h MEDIA ERROR (continued) 15 00 Positioning Error Detected by Drive, Check UPT 15 02 Positioning Er[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 183 REQUEST SENSE Command (03h) (continued) Table 5–86 Supported Additional Sense Codes and Sense Code Qualifiers (continued) Sense Key Sense Code Sense Qualifier Meaning 04h HARDWARE ERROR 00 00 No Additional Sense Information 02 00 Could Not Complete SEEK 03 00 Write Fa[...]

SCSI Description 5– 184 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives REQUEST SENSE Command (03h) (continued) Table 5–86 Supported Additional Sense Codes and Sense Code Qualifiers (continued) Sense Key Sense Code Sense Qualifier Meaning 04h HARDWARE ERROR (continued) 06 8F Sync to Disk Spokes Failed 06 90 Invalid CP18 on Disk 06 91 Inva[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 185 REQUEST SENSE Command (03h) (continued) Table 5–86 Supported Additional Sense Codes and Sense Code Qualifiers (continued) Sense Key Sense Code Sense Qualifier Meaning 04h HARDWARE ERROR (continued) 09 B4 Svo, Context Acquire Data Address Valid Timeout 09 B5 Svo, Conte[...]

SCSI Description 5– 186 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives REQUEST SENSE Command (03h) (continued) Table 5–86 Supported Additional Sense Codes and Sense Code Qualifiers (continued) Sense Key Code Qualifier Meaning 04h HARDWARE ERROR (continued) 40 AB Could Not Calculate Bode Info 40 AC Could Not Complete the Low-Level BCV WRI[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 187 REQUEST SENSE Command (03h) (continued) Table 5–86 Supported Additional Sense Codes and Sense Code Qualifiers (continued) Sense Key Code Qualifier Meaning 06h UNIT ATTENTION (continued) 29 03 Bus Device Reset Occurred 29 04 Device Reset Occurred, Bugcheck Occurred 29 [...]

SCSI Description 5– 188 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives Table 5–87 Sense-Key Specific Field Contents Sense Key Field Contents Initiator Interpretation ILLEGAL REQUEST Fi eld pointer bytes Illegal field's offset (in the Command (Figure 5–86) Descriptor Block or data-out buffer transfer parameters). NOT READY Progress[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 189 REQUEST SENSE Command (03h) (continued) Bit Byte 7 6 5 4 3 2 1 0 15 SKSV = 1 C/D Reserved BPV Bit Pointer 16 - 17 Field Pointer Figure 5–86 ILLEGAL REQUEST Sense Key Field Pointer Bytes — Data Format Table 5–88 ILLEGAL REQUEST Sense Key Field Pointer Bytes — Fie[...]

SCSI Description 5– 190 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives REQUEST SENSE Command (03h) (continued) Table 5–89 NOT READY Sense Key - Progress Indication Bytes — Field Descriptions Field Description SKSV Sense-Key Specific Valid Progress Indication Indication of percent complete for the FORMAT UNIT command. The returned value[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 191 5.35 RESERVE (6) Command (16h) The RESERVE and the RELEASE commands are used for contention resolution in multiple-initiator systems. The RESERVE command is used to reserve a logical unit. Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (16h) 1 Reserved 3rdPty Third Party Dev[...]

SCSI Description 5– 192 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives RESERVE (6) Command (16h) (continued) Table 5–91 RESERVE (6) Command — Field Descriptions (continued) Field Description Extent The drive supports reservations only on entire logical units. The value must be 0. Reservation Identification Any value in this field is ig[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 193 5.36 RESERVE (10) Command (56h) The RESERVE and the RELEASE commands are used for contention resolution in multiple-initiator systems. The RESERVE command is used to reserve a logical unit. If RESERVE (10) is used, then RELEASE (10) is also used. Bit Byte 7 6 5 4 3 2 1 [...]

SCSI Description 5– 194 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives RESERVE (10) Command (56h) (continued) Table 5–92 RESERVE (10) Command — Field Descriptions Field Description 3rd Pty When set to 1, it indicates that the T hird Party Device ID field is valid. LongID When 0, indicates that the third party device associated with the[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 195 RESERVE (10) Command (56h) (continued) Bit Byte 7 6 5 4 3 2 1 0 0 Reserved RelAdr Reservation Type 1 - 3 (MSB) Number of Blocks (LSB) 4 - 7 (MSB) Logical Block Address (LSB) Figure 5–91 Extent Descriptors — Data Format The Reservation Type field defines the type of [...]

SCSI Description 5– 196 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives RESERVE (10) Command (56h) (continued) If the LongID bit = 1 and the Extent bit = 0, then the parameter list length is eight and the parameter list has the format shown in Figure 5-93. Bit Byte 7 6 5 4 3 2 1 0 0 - 7 (MSB) Third Party Device ID (LSB) Figure 5–93 RESERV[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 197 5.37 REZERO UNIT Command (01h) The REZERO UNIT command sends the heads to cylinder 0 (Logical Block Address 0). Once the heads are on the track, they are not guaranteed to stay at cylinder 0; periodic calibrations may send them to a different cylinder. If periodic calib[...]

SCSI Description 5– 198 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 199 5.38 SEEK (6) Command (0Bh) The SEEK (6) command uses a 6-byte Command Descriptor Block to request the drive to send the drive heads to the requested Logical Block Address . The drive responds by placing the heads at the correct Logical Block Address. When the heads are[...]

SCSI Description 5– 200 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 201 5.39 SEEK (10) Command (2Bh) The SEEK (10) command uses a 10-byte Command Descriptor Block to request the drive to send the drive heads to the requested Logical Block Address . The drive responds by placing the heads at the correct Logical Block Address. When the heads [...]

SCSI Description 5– 202 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 203 5.40 SEND DIAGNOSTIC Command (1Dh) The SEND DIAGNOSTIC command sends a diagnostic page to the drive. Refer to the RECEIVE DIAGNOSTICS RESULTS command for a description of the diagnostic pages and the use of the diagnostic commands. The Supported Diagnostic Page List (Fi[...]

SCSI Description 5– 204 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives SEND DIAGNOSTIC Command (1Dh) (continued) 5.40.1 Supported Diagnostic Page List Figure 5–98 shows the Supported Diagnostic Page List that can be supplied with a SEND DIAGNOSTIC command to request that the Supported Diagnostic Page List be returned after the next RECEI[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 205 5.41 SET DEVICE IDENTIFIER Command (A4h) The SET DEVICE IDENTIFIER command requests that the device identifier information in the logical unit be set to the value send via the SET DEVICE IDENTIFIER command’s parameter list. Upon successful completion of a SET DEVICE I[...]

SCSI Description 5– 206 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives SET DEVICE IDENTIFIER Command (A4h) (continued) The SET DEVICE IDENTIFIER command’s parameter list contains Identifier to be set by the logical unit to which the command is sent. Bit Byte 7 6 5 4 3 2 1 0 0 – n (MSB) Identifier (LSB) Figure 5–101 SET DEVICE IDENTIF[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 207 5.42 START STOP UNIT Command (1Bh) The START STOP UNIT command enables or disables the logical unit for media access operations. This command gives the initiator remote control over drive spin- up and spin-down. A jumper (or backplane connection) is used to select the s[...]

SCSI Description 5– 208 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 209 5.43 SYNCHRONIZE CACHE Command (35h) The SYNCHRONIZE CACHE command ensures that all logical blocks, within the specified range in the drive's cache memory, have their most recent data value recorded on the physical medium. If more recent data for a logical block, w[...]

SCSI Description 5– 210 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 211 5.44 TEST UNIT READY Command (00h) The TEST UNIT READY command returns GOOD status if the drive is ready to receive medium access commands (that is, READ, WRITE, VERIFY, etc.). If the drive is not ready to receive medium access commands, it returns CHECK CONDITION statu[...]

SCSI Description 5– 212 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 213 5.45 VERIFY Command (2Fh) The VERIFY command verifies the data on the medium for the Logical Block Address range specified. Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (2Fh) 1 Reserved DPO Reserved BytChk RelAdr 2 - 5 Logical Block Address 6 Reserved 7 - 8 Verification Le[...]

SCSI Description 5– 214 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 215 5.46 WRITE (6) Command (0Ah) The WRITE (6) command requests that the drive write initiator-supplied data to the medium. The Command Descriptor Block for the WRITE (6) command is shown in the figure below; the table that follows describes the data fields. Bit Byte 7 6 5 [...]

SCSI Description 5– 216 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 217 5.47 WRITE (10) Command (2Ah) The WRITE (10) command requests that the drive write initiator-supplied data to the medium. Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (2Ah) 1 Reserved DPO FUA Reserved RelAdr 2 - 5 Logical Block Address 6 Reserved 7 - 8 Transfer Length 9 Co[...]

SCSI Description 5– 218 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 219 5.48 WRITE AND VERIFY Command (2Eh) The WRITE AND VERIFY command writes host-supplied data to the unit and verifies it was written correctly. Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (2Eh) 1 Reserved DPO Reserved BytChk RelAdr 2 - 5 Logical Block Address 6 Reserved 7 -[...]

SCSI Description 5– 220 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives WRITE AND VERIFY Command (2Eh) (command) Table 5–102 WRITE AND VERIFY Command — Field Descriptions (continued) Field Description Logical Block Address The address of the first logical block where the WRITE operation will occur. Transfer Length The number of contiguo[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 221 5.49 WRITE BUFFER Command (3Bh) The WRITE BUFFER and the READ BUFFER commands allow the initiator to gain access to the data storage areas within the drive controller. These commands are used to check the integrity of the buffer-initiator data path independent of the st[...]

SCSI Description 5– 222 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives WRITE BUFFER Command (3Bh) (continued) Table 5–103 WRITE BUFFER Command — Field Descriptions Field Description Mode Four modes are supported by the drive; Combined Header and Data, Data Only, Download Microcode and Save, and Write Data from Echo Buffer. The permissi[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 223 5.50 WRITE LONG Command (3Fh) The WRITE LONG and READ LONG commands allow the initiator to issue raw reads and writes of physical sectors addressed as logical blocks with an assumed sector length of 512 bytes. These commands are used to verify the correction capability [...]

SCSI Description 5– 224 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 225 5.51 WRITE SAME Command (41h) The WRITE SAME command requests that the drive write the single sector of data transferred by the initiator to the medium multiple times. Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (41h) 1 Reserved PBdata LBdta RelAdr 2 - 5 Logical Block Add[...]

SCSI Description 5– 226 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 227 5.52 WRITE SKIP MASK Command (EAh) The WRITE SKIP MASK command allows the initiator to condition the function of the WRITE commands to allow only selected data to be transferred over the SCSI interface. A WRITE SKIP MASK command preceeds a WRITE (10) command; the WRITE [...]

SCSI Description 5– 228 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 229 5.53 XDREAD (10) Command (52h) The XDREAD (10) command requests that the target transfer to the initiator the XOR data generated by an XDWRITE (10) command. The XOR data transferred is identified by Logical Block Address and transfer length that are the same as those sp[...]

SCSI Description 5– 230 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 231 5.54 XDWRITE (10) CO MMAND (50 h ) The XDWRITE (10) command requests that the target XOR the data transferred with the data on the medium. The resulting XOR data is stored in the target’s buffer. The disposition of the data transferred from the initiator is controlled[...]

SCSI Description 5– 232 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives XDWRITE (10) COMMAND (50 h ) ( continued ) Table 5 –108 XDWRITE (10) Command — Field Descriptions (continued) Field Description Logical Block Address Specifies the address of the first logical block where the WRITE operation will occur. Transfer Length Specifies the[...]

SCSI Description Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5– 233 5.55 XPWRITE (10) CO MMAND (51 h ) The XPWRITE (10) command requests that the target XOR the data transferred with the data on the medium then writes the XOR data to the medium. The Logical Block Address field specifies the Starting Logical Block address for the target [...]

SCSI Description 5– 234 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives XPWRITE (10) Command (51h) (continued) Table 5 –109 XPWRITE (10) Command — Field Descriptions (continued) Field Description Logical Block Address Specifies the address of the first logical block from which to read data from its medium and the first logical sector to[...]

Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 6- 1 Chapter 6 FEATURE DESCRIPTIONS This chapter provides descriptions of many of the features incorporated in the Quantum Atlas 10K II Ultra 160/m SCSI hard disk drive family. 6.1 KEY FEATURES Atlas 10K II Disk Drives provide unequaled quality and performance. They are designed to improve the [...]

Feature Descriptions 6- 2 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives • Advanced Ultra3 160/m-LVD, Ultra2-LVD, and Ultra-SE with 68-pin wide connector or 80-pin SCA-2 connector • Superior data integrity: › 352-bit Reed-Solomon quad-burst ECC provides fast on-the-fly correction for small errors and robust software-based correction f[...]

Feature Descriptions Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 6- 3 6.4 ZERO LATENCY READ/WRITE An average of half a revolution of latency is saved by starting to read or write as soon as a seek settles on the designated track. If reading, the initial data read is stored in a buffer (cache) until the actual starting address data block [...]

Feature Descriptions 6- 4 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 6.8 EMBEDDED SERVO SYSTEM Embedded servo information is written in a spoke configuration on every track, on every disk surface. The spokes (or headers) consist of quadrature analog patterns and digital address data. The digital portions of the spoke data are read and u[...]

Feature Descriptions Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 6- 5 6.9.4 Data Sector Real location Error Protection In any SCSI disk drive, bad blocks may be reallocated. However, a power failure or unrecoverable data could threaten data integrity during a block reallocation. The reallocation and defect list storage algorithms prevent[...]

Feature Descriptions 6- 6 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 6.11 COMMAND REORDERING The drive uses Optimized Reordering Command Algorithm (ORCA) and tagged command queuing to provide greater throughput by reordering any commands queued on the drive to minimize rotational latency, seek time and head selection time. The performan[...]

Feature Descriptions Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 6- 7 6.15 DIAGNOSTICS The drive has extensive diagnostic capabilities, including those described below: power-on self-test, periodic self-adjustments, and host diagnostics. Quantum uses self-diagnostic tests and sense data tracking to manage drive errors, in addition to log[...]

Feature Descriptions 6- 8 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 6.15.3 Host Diagnostics The Host Processor can command the drive to perform diagnostic tests and report status using RECEIVE and SEND DIAGNOSTIC RESULTS commands. Certain parameters can be sent to the drive to alter or enhance the performance of the diagnostic tests sp[...]

Feature Descriptions Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 6- 9 6.16.3 Reallocation of Bad Blocks Most of the spare blocks are located on the inner cylinders of the drive. All defective blocks are in-line spared at the factory or at format time. Some spare blocks are allocated at the end of each band, and are reserved for grown, re[...]

Feature Descriptions 6- 10 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Single-ended SCSI, in contrast, uses one-wire active signaling with the signal return wire connected to ground. The active signal range is switched between a high in the range of +2.4 – 3.0 volts and a low in the range of 0 - +.5 volts. LVD/MSE SCSI devices in singl[...]

Feature Descriptions Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 6- 11 6.17.2 DIFFSENS SWITCHING After establishing its initial operating mode, the Atlas 10K II disk drive continues to monitor the DIFFSENS signal. If a change in level is detected, such as might occur if a device is added to or removed from the bus, the DIFFSENS circuit d[...]

Feature Descriptions 6- 12 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 6.17.4 CYCLIC REDUNDANCY CHECKING When transferring data with DT clocking on the SCSI bus, a significantly improved form of error checking, cyclic redundancy checking (CRC) is used instead of the traditional parity checking. With CRC checking, the device sending data [...]

Feature Descriptions Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 6- 13 NOTE In a multimode environment, any insertion or removal that changes the bus mode causes a transceiver mode change reset event. System Considerations It is not possible for the suppliers of various system components (e.g., targets, initiators, backplanes, terminator[...]

Feature Descriptions 6- 14 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives[...]

Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives A– 1 Appendix A Quick Reference Appendix A is a synopsis of SCSI commands, associated pages, messages, sense keys and status codes used in this manual. A.1 SCSI-2 / SCSI-3 Equivalent Terminology Table A − 1 contains the SCSI-3 equivalent terms for common terms used in SCSI-2 documents. Tabl[...]

Appendix A. Quick Reference A– 2 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table A − 2 SCSI-3 Quick Reference – Commands and Messages Command Op Code (Hex) CHANGE DEFINITION 40 FORMAT UNIT 04 INQUIRY 12 LOG SELECT 4C LOG SENSE 4D MODE SELECT (6) 15 MODE SELECT (10) 55 MODE SENSE (6) 1A MODE SENSE (10) 5A PERSISTENT RESERVE IN 5E [...]

Appendix A. Quick Reference Quantu m Atlas 10K II Ultra 160/m SCSI Hard Disk Drives A– 3 Table A − 2 SCSI-3 Quick Reference – Commands and Messages (continued) Messages Msg. Code - Hex ABORT 06 ABORT TAG 0D BUS DEVICE RESET 0C CLEAR QUEUE 0E COMMAND COMPLETE 00 CONTINUE I/O PROCESS 12 DISCONNECT 04 HEAD OF QUEUE TAG 21 IDENTIFY 80 – FF IGNO[...]

Appendix A. Quick Reference A– 4 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table A − 3 SCSI-3 Quick Reference - Pages Pages Page Code Cmd Application Client 0F 4D ASCII Implemented Operating Definition 82 12 ASCII Information 01, 02, 03 12 Bad Block Replacement Summary 39 4D Buffer Overruns and Underruns 01 4D Caching 08 * 15, 55 C[...]

Appendix A. Quick Reference Quantu m Atlas 10K II Ultra 160/m SCSI Hard Disk Drives A– 5 Table A − 4 SCSI-3 Quick Reference – Sense Keys Sense Keys Sense Code - Hex NO SENSE 0 RECOVERED ERROR 1 NOT READY 2 MEDIUM ERROR 3 HARDWARE ERROR 4 ILLEGAL REQUEST 5 UNIT ATTENTION 6 DATA PROTECT 7 VENDOR SPECIFIC 9 ABORTED COMMAND B MISCOMPARE E Table A[...]

Appendix A. Quick Reference A– 6 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives[...]

Quantum Atlas 10 K II Ultra 160/m SCSI Hard Disk Drives B– 1 Appendix B SCSI REFERENCE INFORMATION Appendix B provides information about SCSI bus timing, SCSI signal states, SCSI bus conditions, and SCSI message format and supported SCSI messages. Information in this appendix covers both SCSI-2 and SCSI-3 interfaces. Note that this information is[...]

Appendix B. SCSI Bus Signal Timing B– 2 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table B–1 SCSI Bus Timing Values -- ANSI SCSI-2 Standard (continued) Timing Description Value Description Cable Skew Delay 10 ns Maximum difference in propagation time allowed between any two SCSI bus signals measured between any two SCSI devices. Dat[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 3 Table B–1 SCSI Bus Timing Values -- ANSI SCSI-2 Standard (continued) Fast Synchronous Option Fast Assertion Period 30 ns Minimum time a drive asserts REQ and the minimum time an initiator asserts ACK while using fast synchronous data transfers. Fast C[...]

Appendix B. SCSI Bus Signal Timing B– 4 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B.2 SCSI-3 Bus Timing SCSI devices that use a single transition (ST), i.e, they use only one edge of the REQ/ACK signal to clock data, can provide data transfer rates of up to 80 MB per second. Ultra 160/m SCSI-3, on the other hand, uses both edges of R[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 5 Table B–3 Single Transition (ST) SCSI Bus Data and Information Phase Timing Values (Note 4) Description Asynch Fast-5 Fast-10 Fast-20 Fast-40 ATN Transmit Setup Time 90 ns 33 ns 33 ns 21.5 ns 19.25ns ATN Receive Setup Time 45 ns 17 ns 17 ns 8.5 ns 6.7[...]

Appendix B. SCSI Bus Signal Timing B– 6 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table B–4 Double Transition (DT) SCSI Bus Data and Information Phase Timing Values (Note 4) Timing Description Fast-10 Fast-20 Fast-40 Fast-80 ATN Transmit Setup Time 48.4 ns 29.2 ns 19.6 ns 14.8 ns ATN Receive Setup Time 13.6 ns 7.8 ns 4.9 ns 3.45 ns[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 7 The Timing Parameters and Descriptions for SCSI-3 ST/DT are defined in alphabetical order below: Arbitration delay - The minimum time a SCSI device shall wait from asserting the BSY signal for arbitration until the DATA BUS is examined to see if arbitra[...]

Appendix B. SCSI Bus Signal Timing B– 8 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Receive Negation Period - The minimum time required at a SCSI device receiving a REQ signal for the signal to be negated while using synchronous data transfers. Also, the minimum time required at a SCSI device receiving an ACK signal for the signal to b[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 9 B.3 Signal States The following paragraphs describe the SCSI signal values and SCSI ID bits . B.3.1 Signal Values All signal values are actively driven true (low voltage). Because the signal drivers are OR-tied, the bias circuitry on the bus terminator [...]

Appendix B. SCSI Bus Signal Timing B– 10 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B.3.2 SCSI ID Bits & Priorities The SCSI standard permits a maximum of eight SCSI devices on a narrow (8 address bits) SCSI bus and up to 16 devices on a wide (16 address bits) bus. Each SCSI device has a single, unique SCSI ID address bit assigned[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 11 B.4 SCSI Signals Table B-7 defines the SCSI-3 bus signals. Table B–7 SCSI–3 Bus Signal Definitions Signal Definition ACK (acknowledge) A signal driven by the initiator as an acknowledgment of receipt of data from a target or as a signal to a target[...]

Appendix B. SCSI Bus Signal Timing B– 12 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B.5 SCSI Bus Phases The SCSI communication architecture includes eight distinct phases: BUS FREE phase ARBITRATION phase SELECTION phase RESELECTION phase COMMAND phase DATA (In/Out) phases STATUS phase MESSAGE (In/Out) phases The last four phases are [...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 13 2. SCSI devices release all SCSI bus signals within one bus clear delay. If a SCSI device requires more than one bus settle delay to detect the BUS FREE phase, then it releases all SCSI bus signals within one bus clear delay minus the excess time to de[...]

Appendix B. SCSI Bus Signal Timing B– 14 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B.5.3 SELECTION Phase The SELECTION phase allows an initiator to select a drive to initiate a drive function. The SCSI device that won the arbitration has both the BSY and SEL signals asserted and has delayed at least one bus clear delay plus one bus s[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 15 The drive : 8. Determines that it is selected when the SEL signal and its SCSI ID bit are true and the BSY and I/O signals are false for at least one bus settle delay. 9. Can exa mine the DATA BUS to determine the SCSI ID of the selecting initiator. 10[...]

Appendix B. SCSI Bus Signal Timing B– 16 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 4. Sets the DATA BUS to the logical OR of its SCSI ID bit and the initiator’s SCSI ID bit. 5. Waits at least two deskew delays. 6. Releases the BSY signal. 7. Waits at least one bus settle delay before looking for a response from the initiator. The i[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 17 B.5.5 Information Transfer Phases The COMMAND, DATA, STATUS, and MESSAGE phases are known as the Information Transfer Phases because they are used to transfer data or control information. The C/D, I/O, and MSG signals are used to distinguish between th[...]

Appendix B. SCSI Bus Signal Timing B– 18 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table B–8 Information Transfer Phases Signal Direction of Transfer/ MSG C/D I/O Phase Name Definition 0 0 0 DATA OUT Initiator to Drive. Allows the drive to request that data be sent from the initiator to the drive. 0 0 1 DATA IN Drive to initiator. [...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 19 Initiator-to-Drive Transfer Procedure 1. The drive asserts the REQ signal. 2. The initiator drives the DB (7–0, P) signals to their desired values. 3. The initiator delays at least one Deskew delay plus a cable skew delay. 4. The initiator asserts th[...]

Appendix B. SCSI Bus Signal Timing B– 20 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives 9. The initiator waits at least the greater of the following periods before reasserting ACK, (assuming that REQ/ACK offset is set to zero): a.) A transfer period from the last transition of the ACK signal to true; b.) A negation period from the last tr[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 21 B.5.5.3 Wide Data Transfer Wide Data Transfer is optional and can be used in the DATA phase only if a wide transfer agreement is established. Wide data transfer is established by negotiations between the initiator and drive using the Wide Data Transfer[...]

Appendix B. SCSI Bus Signal Timing B– 22 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives If the drive does not retry the MESSAGE OUT phase or it exhausts its retry limit, it can: • Return CHECK CONDITION status and set the sense key to ABORTED COMMAND and the additional sense code to MESSAGE ERROR. • Indicate an exception cond ition by[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 23 B.6 SCSI B us Conditions The SCSI bus has two asynchronous conditions: Attention and Reset. B.6.1 Attention Condition The attention condition informs a drive that an initiator has a message ready. The drive gets the message by performing a MESSAGE OUT [...]

Appendix B. SCSI Bus Signal Timing B– 24 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives The initiator keeps the ATN signal asserted if more than one byte is to be transferred. The initiator can negate the ATN signal at any time, except it does not negate the ATN signal while the ACK signal is asserted during a MESSAGE OUT phase. Normally,[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 25 B.7 SCSI MESSAGE FORMAT A message can be one or more bytes in length. One or more messages can be sent during a single MESSAGE phase, but a message cannot be split over MESSAGE phases. The initiator is required to end the MESSAGE OUT phase (by negating[...]

Appendix B. SCSI Bus Signal Timing B– 26 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table B–11 Supported SCSI Messages Message Message Code Direction 1 ABORT TASK 2 (ABORT TAG) 0Dh Out ABORT TASK SET 2 (ABORT) 06h Out CLEAR TASK SET 2 (CLEAR QUEUE) 0Eh Out CONTINUE TASK 2 (CONTINUE I/O PROCESS) 12h Out DISCONNECT 04h In Out IDENTIFY[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 27 Bit 7654321 0 Byte 0 Extended Message (01h) 1 Extended Message length 2 Extended Message code 3 to Extended Message Arguments n-1 Figure B–1 Extended Message — Data Format Table B–12 Extended Message — Field Description Field Description Extend[...]

Appendix B. SCSI Bus Signal Timing B– 28 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B.8 SUPPORTED SCSI MESSAGES Following are descriptions of each of the messages supported by the drive. SCSI-3 message names are used. If there is a corresponding SCSI-2 name that is different, it is shown in parentheses in ITALICS . B.8.1 ABORT TASK Me[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 29 B.8.5 CONTINUE TASK Message (12h) ( CONTINUE I/O PROCESS ) The CONTINUE TASK message tells the drive to resume the I/O that the initiator has reconnected. This message is sent in the same MESSAGE OUT phase as the IDENTIFY message. B.8.6 DISCONNECT Mess[...]

Appendix B. SCSI Bus Signal Timing B– 30 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Bit 7654321 0 Identify DiscPriv LUN Figure B–2 IDENTIFY Message — Data Format Table B–14 IDENTIFY Message — Field Description Field Description Identify The Identify bit must be set to 1 . This identifies this message as an IDENTIFY message. Di[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 31 Table B–15 Drive’s Response to INITIATOR DETECTED ERROR Message BUS Phase Drive’s Response SELECTION The drive discards the INITIATOR DETECTED ERROR message and goes to the BUS FREE phase. COMMAND The drive discards any Command Descriptor Block b[...]

Appendix B. SCSI Bus Signal Timing B– 32 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B.8.11 LINKED COMMAND COMPLETE Message (0Ah) The drive sends the LINKED COMMAND COMPLETE Message to the initiator to signal that the execution of a linked command has been completed and the status has been sent. The initiator should then set the pointe[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 33 B.8.15 NO OPERATION Message (08h) The NO OPERATION message allows an initiator to tell the drive to continue with the operation it was performing before the drive communicated a need for a MESSAGE OUT phase. For example, if the drive does not respond t[...]

Appendix B. SCSI Bus Signal Timing B– 34 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B.8.16.1 HEAD OF QUEUE TAG Message (21h) The HEAD OF QUEUE TAG message specifies that the task is to be placed first in the drive’s task queue. An in-progress task is not pre-empted by the command that accompanies this message. A later task, also rec[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 35 B.8.19 SYNCHRONOUS DATA TRANSFER REQUEST Message (01h) The SYNCHRONOUS DATA TRANSFER REQUEST (SDTR) message exchange establishes the permissible transfer period and the REQ/ACK offsets for the DATA IN/DATA OUT phases. The transfer period is the minimum[...]

Appendix B. SCSI Bus Signal Timing B– 36 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table B–16 SYNCHRONOUS DATA TRANSFER REQUEST Message — Field Descriptions Field Description Transfer Period Transfer perio ds are specified in 4-ns units (a transfer period value of 100 yields an actual transfer period of 400 ns (4 x 100)). The min[...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 37 the drive detects the negation of ACK for the TASK COMPLETE message (with ATN false), the drive goes to the BUS FREE phase by releasing the BSY signal. The drive also negates the MSG, C/D and I/O signals at this time. B.8.23 WIDE DATA TRANSFER REQUEST [...]

Appendix B. SCSI Bus Signal Timing B– 38 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table B–17 WIDE DATA TRANSFER REQUEST Message — Field Descriptions Field Description Transfer Width The transfer width that is established applies to all logical units on both SCSI devices. The originating SCSI device sets its transfer width value [...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 39 B.8.24 PARALLEL PROTOCOL REQUEST Message (04h) The PARALLEL PROTOCOL REQUEST messages are used to communicate a synchronous data transfer agreement, a wide data transfer agreement, and set the protocol options between two SCSI devices (Figure B-6). Bit[...]

Appendix B. SCSI Bus Signal Timing B– 40 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B.8.24 PARALLEL PROTOCOL REQUEST Message (04h) (continued) Table B–18 PARALLEL PROTOCOL REQUEST Message — Field Descriptions Field Description Transfer Period Factor Options are: Code Description 00h – 08h Reserved for faster timings that may be [...]

Appendix B. SCSI Bus Signal Timing Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives B– 41 B.8.24 PARALLEL PROTOCOL REQUEST Message (04h) (continued) Table B–18 PARALLEL PROTOCOL REQUEST Message — Field Descriptions (continued) Field Description Transfer Width Exponent The value within this field defines the width of the transfer used du[...]

Appendix B. SCSI Bus Signal Timing B– 42 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives[...]

Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives C– 1 Appendix C NEGOTIATED RATE INFORMATION PAGE REFERENCE This appendix provides information about the INQUIRY command’s Negotiated Rate Information Page that is not provided in Section 5.11.2.7. Specifically, it provides the codes and meanings for the Transfer Period Factor field (byte 4)[...]

Appendix C. Negotiated Rate Information Page Reference C– 2 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Table C–2 Transfer Period Factor Field Values When PARL = 0 Code Description 00h – 09h Reserved. 0Ah Transfer period = 25 ns (Fast-40 data is latched every 25 ns). 0Bh Transfer period = 30 ns (Fast-40 data is latched every 30 ns)[...]

Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives I − 1 INDEX —A— ABORT TASK Message, B-28 ABORT TASK SET Message, B-28 Acoustic Emissions, 4-10 Activity LED, 3-14 Additional Sense Codes, 5-179 Additional Sense Length, 5-173, 5-174 AIP, starting, 5-98 ANSI Version, 5-35, 5-36 ARBITRATION Phase, B-13 ASCII Implemented Operating Definition[...]

Index I − 2 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives Implemented Operating Definition Page, 5-36, 5-38 Information Transfer Phases, B-17 Initialization Pattern Descriptor, 5-27, 5-28, 5-30 INITIATE RECOVERY Message, B-31 INITIATOR DETECTED ERROR Message, B-31 INQUIRY Command, 5-33 Interleave, 5-26, 5-105, 5-106 ISO Version, 5-35, 5-[...]

Index Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives I − 3 Reservation Identification, 5-163, 5-165, 5-166, 5-191, 5-192, 5-193 RESERVE (6) Command, 5-191 RESERVE (10) Command, 5-193 Reset Condition, B-24 Response Data Format, 5-35, 5-36 Retry Count, 5-188, 5-190 Returned Logical Block Address, 5-141, 5-142 REZERO UNIT Command, 5-197 Rigi[...]

Index I − 4 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives[...]

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500 McCarthy Blvd. Milpitas, CA 95035 (408) 894-4000 www.quantum.com June 8, 2000 81-122517-04[...]