Quantum DLT 7000 manuale d’uso

DLT ™ 7000 Tape System Product Manual November 10, 2003 81 - 60000 - 06[...]

Quantum reserves the right to make changes and improvements to its 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 manu[...]

USER MANUAL STATEMENTS FOR CLASS A EQUIPMENT (INTEGRATIBLE TAPE SYSTEM) This equipment generates, uses, and may emit radio frequency energy. The equipment has been type tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC rules, which are designed to provide reasonable protection against such radio freq[...]

USER MANUAL STATEMENTS FOR CLASS A EQUIPMENT ( continued ) USER MANUAL STATEMENTS FOR CLASS B EQUIPMENT (TABLETOP VERSION) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a[...]

USER MANUAL STATEMENTS FOR CLASS B EQUIPMENT ( continued )[...]

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Quantum DLT 7000 Tape System vii TABLE OF CONTENTS Revision History ........................................................................................................ xix About This Manual .................................................................................................. xxi Chapter 1: General Description and Specifications 1.[...]

Table of Contents Quantum DLT 7000 Tape System viii 2.5 Power On Self Test (POST) ..................................................................... 2-23 2.6 Troubleshooting ................................................................................... 2-25 Chapter 3: SCSI DESCRIPTION 3.1 SCSI Overview ......................................[...]

Table of Contents Quantum DLT 7000 Tape System ix Chapter 5: SCSI COMMANDS 5.1 Overview of Command and Status Processing ........................................ 5-1 5.1.1 SCSI Pointers ................................................................................. 5-3 5.1.2 Command Descriptor Block ...............................................[...]

Table of Contents Quantum DLT 7000 Tape System x 5.9.10 Changeable Parameters within MODE SELECT ............................. 5-104 5.10 MODE SENSE (6) / (10) Command (1A h / 5Ah) ...................................... 5-105 5.10.1 MODE SENSE Data Headers ......................................................... 5-108 5.10.2 MODE SENSE Block Descr[...]

Table of Contents Quantum DLT 7000 Tape System xi C.4 Interpreting the Results of a Firmware Update ....................................... C-4 Appendix D: The Tape Cartridge ............................................................................. D-1 D.1 Tape Cartridge Handling Guidelines ......................................................[...]

Table of Contents Quantum DLT 7000 Tape System xii Figures Figure 2–1 DLT 7000 SCSI ID Jumper Location (Rackmount Version Shown) ............... 2-5 Figure 2–2 DLT 7000 TERMPWR and Parity Check Jumper Locations (Rackmount Version Shown) .................................................................. 2-6 Figure 2–3 Rackmount Drive Mounting [...]

Table of Contents Quantum DLT 7000 Tape System xiii Figure 5–25 Log Parameters Format for Read/Write Compression Ratio LOG SENSE Page (Parameter Codes 00h and 01h) .................................. 5-60 Figure 5–26 Log Parameters Format for Read/ Write Compression Ratio LOG SENSE Page (Parameter Codes 02h through 09h) .........................[...]

Table of Contents Quantum DLT 7000 Tape System xiv Figure 5 –60 PREVENT / ALLOW MEDIUM REMOVAL Command Descriptor Block — Data Format ........................................................... 5-131 Figure 5 –61 READ Command Descriptor Block — Data Format .................................. 5-133 Figure 5 –62 READ BLOCK LIMITS Command Des[...]

Table of Contents Quantum DLT 7000 Tape System xv TABLES Table 1–1 DLT 7000 Physical Dimensions ................................................................. 1-2 Table 1–2 DLT 7000 Storage Capacity ..................................................................... 1-3 Table 1–3 DLT 7000 Performance Data ................................[...]

Table of Contents Quantum DLT 7000 Tape System xvi Table 4–5 IDENTIFY Message — Field Description .................................................... 4-7 Table 4–6 IGNORE WIDE RESIDUE Message — Field Definition .................................. 4-8 Table 4–7 Drive Response to INITIATOR DETECTED ERROR Message .......................... 4[...]

Table of Contents Quantum DLT 7000 Tape System xvii Descriptions .......................................................................................... 5-67 Table 5–34 Log Parameters for Device Status LOG SENSE Parameter 0001h (Cleaning Related) Field Descriptions ............................................ 5-68 Table 5 –35 MODE SELECT (6)[...]

Table of Contents Quantum DLT 7000 Tape System xviii Table 5 –73 RESERVE UNIT Command Data — Field Descriptions ................................. 5-163 Table 5 –74 REWIND Command Data — Field Descriptions .......................................... 5-165 Table 5 –75 SEND DIAGNOSTIC Command Data — Field Descriptions ......................[...]

Quantum DLT 7000 Tape System xix REVISION HISTORY This Revision History provides a publications record of this manual. It lists the manual’s revision levels, release dates, and a summary of changes for each release. Manual Number - Revision Level Date of Release Summary of Changes 81-111331-01 March 1, 1996 Original issue March 18, 1996 PO/ST fai[...]

Revision History Quantum DLT 7000 Tape System xx Manual Number - Revision Level Date of Release Summary of Changes 81 - 60000 - 04 June 9, 1999 Entire manual r ewritten to conform to corporate standard for product manuals. Manual updated to include SCSI command updates (Chapter 5); consolidation of Request Sense ASC/ASCQ codes into one complete tab[...]

Quantum DLT 7000 Tape System xxi ABOUT THIS MANUAL “About this Manual” outlines the scope and contents of this manual. It contains information about the intended audience, purpose of the manual, document organization, and document conventions. AUDIENCE This manual is written for original equipment manufacturers (OEMs) that are integrating this [...]

About This Manual Quantum DLT 7000 Tape System xxii Chapter 2 Hardware Implementation This chapter contains configuration and installation information for the tape drive, descriptions of the drive controls and LEDs, and information on running the self-test. Chapter 3 SCSI Description This chapter provides a detailed description of the logical inter[...]

About This Manual Quantum DLT 7000 Tape System xxiii Appendix C Updat ing the Firmware Appendix C provides a step-by-step procedure for updating a tape system’s PCBA controller-resident firmware. Appendix D The Tape Cartridge Appendix D provides tape cartridge handling and inspection procedures, information on the write-protect switch, how to loa[...]

About This Manual Quantum DLT 7000 Tape System xxiv READER COMMENTS Quantum is committed to providing the best products and service. We encourage your comments, suggestions, and corrections for this manual. Please send all comments to: Quantum Technical Publications 4001 Discovery Drive, Suite 1100 Boulder, CO 80303[...]

Quantum DLT 7000 Tape System 1- 1 Chapter 1 GENERAL DESCRIPTION AND SPECIFICATIONS This chapter provides a description and gives specifications for the Quantum DLT™7000 Tape System. 1.1 PRODUCT DESCRIPT ION The Quantum DLT  7000 tape system is a high-performance, high-capacity, streaming cartridge tape system designed for efficient data back-u[...]

General Description and Specifications 1- 2 Quantum DLT 7000 Tape System 1.2 PRODUCT FEATURES The DLT 7000 tape drive offers the following product features: • 35.0 GB Native, 70.0 GB Compressed Capacity (Formatted capacity assuming a 2:1 data compression ratio. Note that actual compression ratio depends on the type of data, SCSI bus limitations, [...]

General Description and Specifications Quantum DLT 7000 Tape System 1- 3 1.3.2 Interface Type DLT 7000 tape drives are available with narrow SCSI-2 Fast/Wide (16-bit) single-ended or differential interfaces. 1.3.3 Storage Capacity The following table provides the ranges of capacity (native and compressed) for the tape system, depending on which DLT[...]

General Description and Specifications 1- 4 Quantum DLT 7000 Tape System 1.3.5 Performa nce Data The following table provides performance data for the DLT 7000 tape system. Table 1 − 3 DLT 7000 Performance Data Feature Description Transfer Rate, User Native Transfer Rate, Raw Native Transfer Rate, Compressed 5.2 MB/second 6.8 MB/second Up to 10.0[...]

General Description and Specifications Quantum DLT 7000 Tape System 1- 5 1.3.6 Environmental Specifications The following tables provide the operating, non-operating, storage and shipping environmental specifications for the DLT 7000 tape system. Table 1 − 4 DLT 7000 Environmental Specifications Specification Operating Limits Non-Operating Limits[...]

General Description and Specifications 1- 6 Quantum DLT 7000 Tape System Table 1 − 6 DLT 7000 Operating Shock and Vibration Specifications Specification Description Shock Pulse Shape: ½ sine pulse Peak Acceleration: 10 G Duration: 10 ms Application: X,Y,Z axes, once in each axis Vibration Type: Sine Sweep Frequency Range: 5 to 500 Hz Upward and [...]

General Description and Specifications Quantum DLT 7000 Tape System 1- 7 Table 1 − 7 DLT 7000 Non-Operating Shock and Vibration Specifications Shock (Unpackaged) Pulse Shape: Square wave ½ sine pulse Peak Acceleration: 40 G (180 in/sec velocity changing) 140 G Duration: 10 ms 2 ms Application: X,Y,Z axes, twice in each axis (once in each directi[...]

General Description and Specifications 1- 8 Quantum DLT 7000 Tape System 1.3.7 Power Requirements The following table provides the applicable power requirements for both versions of the tape drive. Note that the tabletop version requires ac power. Table 1 − 8 DLT 7000 Power Requirements Requirement Integratible Version Tabletop Version Electrical[...]

General Description and Specifications Quantum DLT 7000 Tape System 1- 9 1.3.8 Current Requirements The following table lists current requirements for the tape drive in a variety of operating conditions. Table 1 − 9 DLT 7000 Current Requirements Volts Typical Maximum (Includes Ripple) Drive Operating in WRITE Mode Start/Stop 5 Volt Rail 3.6 Amps [...]

General Description and Specifications 1- 10 Quantum DLT 7000 Tape System 1.3.9 Acoustic Noise Emissions The following tables provide the tape drive’s acoustic noise emission levels, both as noise power and sound pressure. Information about acoustic emissions is also provided in German to fulfill an international requirement. Table 1 − 10 Acous[...]

General Description and Specifications Quantum DLT 7000 Tape System 1- 11 1.3.11 DLTtape Recording Media Specifications Table 1-13 provides specifications for tape media. Table 1-14 provides operating and storage environment limits for the tape cartridges. Table 1 − 12 DLTtape Media Specifications DLTtape Media Type Specifications DLTtape III Wid[...]

General Description and Specifications 1- 12 Quantum DLT 7000 Tape System 1.3.12 Electromagnetic Emissions The integratible version of the drive complies with FCC Class A in a standard enclosure; the tabletop version complies with the FCC Class B limits. 1.3.13 Electromagnetic Interferen ce (EMI) Susceptibility The following table provides regulati[...]

General Description and Specifications Quantum DLT 7000 Tape System 1- 13 1.3.15 Radiated Emissions Limits of radiated interference field strength, in the frequency range from 30 MHz to 30 GHz at a test distance of 3 and 10 meters, for Class B equipment are listed in the following table. Table 1- 16 Radiated Emissions Frequency Range Quasi-peak lim[...]

General Description and Specifications 1- 14 Quantum DLT 7000 Tape System[...]

Quantum DLT 7000 Tape Drive 2- 1 Chapter 2 HARDWARE IMPLEMENTATION This chapter describes how to install the integratible tape drive or “brick” into a rackmount system. This includes configuration jumper settings, connector pin assignments, installation instructions, power and signal cabling descriptions, and operating instructions. This chapte[...]

Hardware Implementation 2- 2 Quantum DLT 7000 Tape Drive 2.1.1 Safety Precautions For your safety, follow all safety procedures described here and in other sections of the manual. • Remove power from the computer system (or expansion unit) before installing or removing the tape drive to prevent the possibility of electrical shock or damage to the[...]

Hardware Implementation Quantum DLT 7000 Ta pe Drive 2- 3 2.1.3 Electrostatic Discharge (E SD) Protection Various electrical components on/within the tape drives are sensitive to static electricity and Electrostatic Discharge (ESD). Even a static buildup or discharge that is too slight to feel can be sufficient to destroy or degrade a component&apo[...]

Hardware Implementation 2- 4 Quantum DLT 7000 Tape Drive Drive configuration for DLT 7000 tape drive includes the following: • Set the SCSI ID for the drive (default = SCSI ID 5) • Configure the drive to provide TERMPWR • Set parity checking for the drive (default = parity checking enabled) If you want to change any of the settings, go to the[...]

Hardware Implementation Quantum DLT 7000 Ta pe Drive 2- 5 Figure 2-1 DLT 7000 SCSI ID Jumper Location (Rackmount Version Shown) Table 2 -1 SCSI ID Address Selections SCSI ID Jumper Across Pins: 9-10 7-8 5-6 3-4 1-2 0 1 0 0 0 0 1 1 0 0 0 1 2 1 0 0 1 0 3 1 0 0 1 1 4 1 0 1 0 0 5 (default) 10 101 6 1 0 1 1 0 7 1 0 1 1 1 8 1 1 0 0 0 9 1 1 0 0 1 10 1 1 0[...]

Hardware Implementation 2- 6 Quantum DLT 7000 Tape Drive 2.2.2 Configure the Rackmount Drive for TERMPWR (Single-Ended Only) A SCSI bus must be terminated at each end of the bus. At least one device must supply terminator power (TERMPWR). Quantum recommends that every device on the SCSI bus be configured to supply TERMPWR to ensure that there is a [...]

Hardware Implementation Quantum DLT 7000 Ta pe Drive 2- 7 2.2.4 Installing the Rackmount Tape Drive Installing the tape drive requires securing the drive in its bay or chassis and connecting SCSI bus and power cables. 2.2.4.1 Securing the Rackmount Tape Dri ve This section describes how to mount and secure the drive in the system. In some systems, [...]

Hardware Implementation 2- 8 Quantum DLT 7000 Tape Drive Figure 2 –3 Rackmount Drive Mounting Locations – Side and Bottom Views Bottom View - Inches (Centimeters) Side View - Inches (Centimeters) 9.60 (24.38) 3.40 (8.64) 1.88 (4.76) 3.13 (7.94) 0.82 (2.08) 3.25 (8.26) Front Panel 9.00 (22.86) 9.60 (24.38) 1.88 (4.78) 3.13 (7.94) 0.10 (0.25) 5.5[...]

Hardware Implementation Quantum DLT 7000 Ta pe Drive 2- 9 2.2.4.2 Connecting the Rackmount Drive Cables The three external connectors on the DLT 7000 tape drive that are discussed in this manual are the SCSI, power and optional loader connectors. Tabletop connectors are described in subsection 2.3. SCSI and Power Connectors (Rackmount) Figure 2-4 s[...]

Hardware Implementation 2- 10 Quantum DLT 7000 Tape Drive Table 2–2 68-Pin Single-Ended Version SCSI Connector Signal Names Signal Name Pin Number Pin Number Signal Name Ground 1 35 -DB(12) Ground 2 36 -DB(13) Ground 3 37 -DB(14) Ground 4 38 -DB(15) Ground 5 39 -DB(P1) Ground 6 40 -DB(0) Ground 7 41 -DB(1) Ground 8 42 -DB(2) Ground 9 43 -DB(3) Gr[...]

Hardware Implementation Quantum DLT 7000 Ta pe Drive 2- 11 Table 2–3 68-Pin Differential Version SCSI Connector Signal Names 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) Ground 6 40 Ground +DB(0) 7 41 -DB(0) +DB(1) 8 42 -DB(1) +DB(2) 9 43 -DB[...]

Hardware Implementation 2- 12 Quantum DLT 7000 Tape Drive Table 2 –4 4-Pin Power Connector Pin Assignments Pin Number Signal Name 1 +12 VDC 2 Ground (+12 V return) 3 Ground (+5 V return) 4 +5 VDC Optional Loader Connector (Rackmount) The loader connector provides signals to be used when the tape drive is part of a loader/library configuration. Fi[...]

Hardware Implementation Quantum DLT 7000 Ta pe Drive 2- 13 2.3 CONFIGURING AND INSTALLING A TABLETOP DRIVE This section provides instructions for configuring and installing the tabletop version of the tape drive. 2.3.1 Configuring the Tabletop Drive Figure 2-6 shows the location of the controls and connectors for the tabletop version of the drive. [...]

Hardware Implementation 2- 14 Quantum DLT 7000 Tape Drive 2.3.2 Installing the Tabletop Drive Installing the tape drive consists of connecting SCSI bus and power cables. Figure 2-6 shows the location of the two SCSI bus connectors and power connector on the back of the tabletop drive. SCSI Cables The SCSI bus cable leading from the host adapter can[...]

Hardware Implementation Quantum DLT 7000 Ta pe Drive 2- 15 The ac power cord used with the tabletop tape unit must meet the following criteria: • The power cord should be a minimum of 18/3 AWG, 60 ° C, Type SJT or SVT. • UL and CSA Certified cordage rated for use at 250 VAC with a current rating that is at least 125% of the current rating of t[...]

Hardware Implementation 2- 16 Quantum DLT 7000 Tape Drive Note that the power supply of the tabletop unit has an auto-sensing feature; no adjustment or switch setting changes are required for different ac sources. Refer to Figure 2-6. Connect one end of the power cord to the power connector on the back of the drive. Connect the other end of the cor[...]

Hardware Implementation Quantum DLT 7000 Ta pe Drive 2- 17 Table 2 –6 LED Functionality LED LED Color Description Operate Handle Green On = Insert/Release handle can be operated. Off = Do not operate Insert/Release handle. Blinking = Close the Insert/Release handle and wait for Operate Handle LED to light steadily. Density - 2.6, 6.0, 10.0/15.0, [...]

Hardware Implementation 2- 18 Quantum DLT 7000 Tape Drive Table 2 –6 LED Functionality (continued) LED LED Color Description Use Cleaning Tape Amber On = Tape drive needs cleaning or tape is bad. Remains on after cleaning tape unloads = Cleaning tape attempted to clean the drive head, but the tape expired so cleaning was not done. After cleaning,[...]

Hardware Implementation Quantum DLT 7000 Ta pe Drive 2- 19 Table 2–7 Density LED Functionality Density LED (Amber) Description 2.6 On = Tape is recorded in 2.6 GB format. Blinking = Tape is being forced by operator to record in this density; 2.6 GB has been selected for a WRITE from BOT. 6.0 On = Tape is recorded in 6.0 GB format. Blinking = Tape[...]

Hardware Implementation 2- 20 Quantum DLT 7000 Tape Drive Table 2 -8 Control Functionality Control Description Density Select Button Refer to subsection 2.4.2. Unload Button Use the Unload button to unload the tape cartridge. When you push the Unload button, the tape drive waits until any active writing of data to tape is completed, then begins its[...]

Hardware Implementation Quantum DLT 7000 Ta pe Drive 2- 21 2.4.2 Selecting Density This subsection describes the drive’s density select features. CAUTION If a prerecorded tape is reused and a WRITE from the beginning of tape (BOT) executes (No Append Write), any data already recorded on the tape will be lost. This includes density changes, since [...]

Hardware Implementation 2- 22 Quantum DLT 7000 Tape Drive Selecting Density on the Tape Drive To select density on the tape drive: 1. Load the tape cartridge into the tape drive. The amber Tape in Use LED blinks while the tape loads and calibrates. 2. After calibration is complete, the Tape In Use LED remains steadily lit. The appropriate tape dens[...]

Hardware Implementation Quantum DLT 7000 Ta pe Drive 2- 23 Table 2–9 LED Activity During Density Selection If… Then… The density Select Button is not used The lighted LEDs show the actual density when the tape is being read from and written to. The LEDs light steadily; Density Override LED remains off. The density Select Button is used and th[...]

Hardware Implementation 2- 24 Quantum DLT 7000 Tape Drive Table 2–10 POST/Media Ready Activity Stage Activity 1 The LEDs along the right-hand side of the front panel light in sequence from top to bottom. All LEDs remain lit for a few seconds. 2 The LEDs along the left-hand side of the front panel light together for about three seconds then turns [...]

Hardware Implementation Quantum DLT 7000 Ta pe Drive 2- 25 2.6 TROUBLESHOOTING Table 2-12 lists troubleshooting tips in the event that your tape drive fails its power-on self test or if it signals a problem via its front panel LEDs. If, after attempting the recommended actions listed in Table 2-12, the problem still exists or recurs, a hardware fai[...]

Hardware Implementation 2- 26 Quantum DLT 7000 Tape Drive Table 2–12 Troubleshooting Chart (Continued) If… Then… You Should… System does not recognize the tape drive (cont.) A device may not have been turned on and a valid SCSI ID may not have been configured prior to the system powering on and loading BIOS. Turn drive power on first, and t[...]

Quantum DLT 7000 Tape System 3- 1 Chapter 3 SCSI DESCRIPTION This chapter provides a detailed description of the logical interfaces of the tape drive. The drive is fully compliant with the ANSI SCSI-2 standard for tape drive devices and implements many optional features. 3.1 SCSI OVERVIEW The Small Computer System Interface (SCSI) is a specificatio[...]

SCSI Description 3- 2 Quantum DLT 7000 Tape System 3.2 SCSI COMMANDS ANSI classifies SCSI commands as mandatory, optional, or vendor -specific. The mandatory and optional commands implemented for the drives are summarized in Table 3–1 and described fully in Chapter 5, SCSI Commands . Table 3 – 1 Implemented ANSI SCSI-2 Commands Command Code Cla[...]

SCSI Description Quantum DLT 7000 Tape System 3- 3 Table 3 – 1 Implemented ANSI SCSI-2 Command (continued) Command Code Class Description MODE SELECT (6) 15h Optional Provides a means for the initiator to specify device parameters. MODE SENSE (6)/(10) 1A h/ 5Ah Optional Provides a means for a drive to report parameters to the initiator. PREVENT A[...]

SCSI Description 3- 4 Quantum DLT 7000 Tape System Table 3 – 1 Implemented ANSI SCSI-2 Command (continued) Command Code Class Description SPACE 11 h Mandatory Provides a selection of positioning functions (both forward and backward) that are determined by the code and count. TEST UNIT READY 00h Mandatory Provides a means to check if the logical u[...]

SCSI Description Quantum DLT 7000 Tape System 3- 5 Table 3 – 2 Signal Sources Signals Bus Phase BSY SEL C/D I/O MSG REQ ACK ATN DB(7–0) DB(P) DB(15-8) DB(P1) BUS FREE None None None None None None ARBITRATION All Winner None None S ID S ID SELECTION I&T Init None Init Init Init RESELECTION I&T Targ Targ Init Targ Targ COMMAND Targ None [...]

SCSI Description 3- 6 Quantum DLT 7000 Tape System 3.4 SCSI SIGNALS The following paragraphs define SCSI signals and bus timing values. 3.4.1 SCSI Signal Definitions Table 3–3 defines the SCSI bus signals. Table 3 – 3 SCSI-2 Bus Signal Definitions Signal Definition ACK (acknowledge) A signal driven by the initiator as an acknowledgment of recei[...]

SCSI Description Quantum DLT 7000 Tape System 3- 7 Table 3 – 3 SCSI-2 Bus Signal Definitions (continued) Signal Definition I/O (input/output) A signal driven by a target that controls the direction of data movement on the DATA BUS with respect to an initiator. True indicates input to the initiator. Also used to distinguish between SELECTION and R[...]

SCSI Description 3- 8 Quantum DLT 7000 Tape System Table 3 – 4 SCSI Bus Timing Values (continued) Timing Description Value Description Bus Clear Delay 800 ns Maximum time for a SCSI device to stop driving all bus signals after: 1. BUS FREE is detected. 2. SEL is received from another SCSI device during ARBITRATION. 3. Transition of RST to true. F[...]

SCSI Description Quantum DLT 7000 Tape System 3- 9 Table 3 – 4 SCSI Bus Timing Values (continued) Timing Description Value Description Hold Time 45 ns Minimum time added between the assertion of REQ or ACK and changing the data lines to provide hold time in the initiator or drive while using standard (slow) synchronous data transfers. Negation Pe[...]

SCSI Description 3- 10 Quantum DLT 7000 Tape System 3.5 SCSI BUS PHASES The SCSI architecture includes eight distinct phases: BUS FREE phase ARBITRATION phase SELECTION phase RESELECTION phase CO MMAND phase DATA phases (In/Out) STATUS phase MESSAGE phases (In/Out) The last four phases are called the “information transfer phases”. The SCSI bus [...]

SCSI Description Quantum DLT 7000 Tape System 3- 11 CAUTION Any occurrence of a bus parity error (i.e., a single-bit error) should be considered serious: it implies the possibility of undetected double-bit error may exist on the bus. This may cause undetected data corruption. On properly configured SCSI buses, parity errors are extremely rare. If a[...]

SCSI Description 3- 12 Quantum DLT 7000 Tape System If an initiator detects the release of the BSY signal by the drive at any other time, the drive is indicating an error condition to the initiator. The drive can perform this transition to the BUS FREE phase independently of the state of the ATN signal. The initiator manages this condition as an un[...]

SCSI Description Quantum DLT 7000 Tape System 3- 13 NOTE Step 4 requires that every device complete the arbitration phase to the point of SEL being asserted (for a SELECTION or RESELECTION phase) to avoid hanging the bus. • If a higher priority SCSI ID bit is true on the DATA BUS, the SCSI device loses the arbitration. • The losing SCSI device [...]

SCSI Description 3- 14 Quantum DLT 7000 Tape System 3.5.3.1 Selection Sequence The initiator: 1. Sets the DATA BUS to the OR of its SCSI ID bit and the drive’s SCSI ID bit. 2. Asserts the ATN signal (signaling that a MESSAGE OUT phase is to follow the SELECTION phase). 3. Waits at least two deskew delays. 4. Releases the BSY signal. 5. Waits at l[...]

SCSI Description Quantum DLT 7000 Tape System 3- 15 The initiator asserts the RST signal and follows these steps: a) Continues asserting the SEL and ATN signals and releases the DATA BUS. b) If it has not detected the BSY signal to be true after at least a selection abort time plus two deskew delays, the drive releases the SEL and ATN signals, allo[...]

SCSI Description 3- 16 Quantum DLT 7000 Tape System 9. Examines the DATA BUS to determine the SCSI ID of the reselecting drive. 10. Asserts the BSY signal within a selection abort time of its most recent detection of being reselected. The initiator does not respond to a RESELECTION phase if bad parity is detected or if more than two SCSI ID bits ar[...]

SCSI Description Quantum DLT 7000 Tape System 3- 17 3.5.5 Information Transfer Phases NOTES 1. The tape drive supports wide asynchronous and synchronous data transfers. 2. Both differential and single-ended versions of the tape drive are available. 3. Odd parity is generated during all information transfer phases during which the device writes data[...]

SCSI Description 3- 18 Quantum DLT 7000 Tape System The information transfer phases use one or more REQ/ACK handshakes to control the information transfer. Each REQ/ACK handshake allows the transfer of one byte of information. During the information transfer phases, the BSY signal remains true and the SEL signal remains false. Additionally, the dri[...]

SCSI Description Quantum DLT 7000 Tape System 3- 19 Table 3 – 5 Information Transfer Phases MSG Signal C/D I/O Phase Name Direction of Transfer/ Definition 000 DATA OUT Initiator to drive. Allows the drive to request that data be sent from the initiator to the drive. 001 DATA IN Drive to initiator. Allows the drive to send data to the initiator. [...]

SCSI Description 3- 20 Quantum DLT 7000 Tape System 3.5.5.1 Asynchronous Data Transfer Drive to Initiator Transfer Procedure 1. The drive drives the DB (0-15, P, & P1) signals to their desired values. 2. Drive delays at least one deskew delay plus a cable skew delay. 3. Drive asserts the REQ signal. 4. Initiator reads the DB (0-15, P, & P1)[...]

SCSI Description Quantum DLT 7000 Tape System 3- 21 3.5.5.2 Synchronous Data Transfer Synchronous Data Transfer is optional and is only used in DATA phases and only if a synchronous data transfer agreement is established. The REQ/ACK offset specifies the maximum number of REQ pulses that can be sent by the drive in advance of the number of ACK puls[...]

SCSI Description 3- 22 Quantum DLT 7000 Tape System Initiator-to-Drive Transfer Procedure Initiator transfers one byte for each REQ pulse received. 1. Drive asserts the REQ signal. 2. After receiving the leading edge of the REQ signal, initiator drives the DB (0-15, P, & P1) signals to their desired values. The DB (0-15, P, & P1) signals ar[...]

SCSI Description Quantum DLT 7000 Tape System 3- 23 • When switching the DATA BUS from in to out, the drive releases the DATA BUS no later than a deskew delay after negating the I/O signal. • The ATN and RST signals can change as defined under the descriptions for the attention condition (Section 3.6.1) and reset condition (Section 3.6.2). 3.5.[...]

SCSI Description 3- 24 Quantum DLT 7000 Tape System NOTES In contrast to the BUSY status condition, the DRIVE NOT READY Sense Key is returned as part of the Sense data following a REQUEST SENSE command and indicates that a media access command has been issued but that the media is not ready to be accessed. For example, the tape cartridge is not ins[...]

SCSI Description Quantum DLT 7000 Tape System 3- 25 Table 3 –7 Drive MESSAGE OUT Phase Response ATN Signal True in Phase... The Drive Enters MESSAGE OUT… COMMAND After transferring part or all of the command descriptor block bytes. DATA At the drive’s earliest convenience (often on a logical block boundary). The initiator continues REQ/ACK ha[...]

SCSI Description 3- 26 Quantum DLT 7000 Tape System • The tape medium is rewound to Beginning of Partition (BOP, i.e., Beginning of Tape [BOT]). Note that the tape drive does not implement the hard reset alternative for bus RESET processing. The tape drive recognizes multiple bus resets in succession as well as bus resets of arbitrarily long dura[...]

Quantum DLT 7000 Tape System 4- 1 Chapter 4 MESSAGES The SCSI message system allows communication between an initiator and the drive for interface management and command qualification. Messages can be originated by either the initiator or the drive. This section contains a detailed description of the messages supported by the disk drives. 4.1 MESSA[...]

Messages 4- 2 Quantum DLT 7000 Tape System Table 4 – 1 Message Format Message Code Message 00h One-byte message (COMMAND COMPLETE) 01h Extended message 02h – 1Fh One-byte message 20h – 2Fh Two-byte message 40h – 7Fh Reserved 80h – FFh One-byte message (IDENTIFY) The DLT 7000 tape drive supports the messages listed in Table 4–2. The mess[...]

Messages Quantum DLT 7000 Tape System 4- 3 Table 4 – 2 Supported Messages Message Message Code Direction ABORT 06h Out BUS DEVICE RESET 0Ch Out COMMAND COMPLETE 00h In DISCONNECT 04h In Out EXTENDED MESSAGE (SDTR and wide Data Transfer Request) * 01h In Out IDENTIFY 80h – FFh In Out IGNORE WIDE RESIDUE 23h In INITIATOR DETECTED ERROR 05h Out LI[...]

Messages 4- 4 Quantum DLT 7000 Tape System Bit Byte 76543210 0 Extended Message (01h) 1 Extended Message Length 2 Extended Message Code 3 to n-1 Extended Message Arguments Figure 4 – 1 Extended Message - Data Format Table 4 – 3 Extended Message - Field Description Field Description Extended Message Length This field specifies the length, in byt[...]

Messages Quantum DLT 7000 Tape System 4- 5 4.2 SUPPORTED SCSI M ESSAGES Following are descriptions of each of the messages supported by the drive. 4.2.1 ABORT Message (06h) This message is sent from the initiator to the target to clear the current I/O process on the selected unit. Buffered (cached) write operations are completed if possible. The ta[...]

Messages 4- 6 Quantum DLT 7000 Tape System 4.2.4 DISCONNECT Message (04h) The DISCONNECT message is sent from the drive to inform the initiator that the present connection is going to be broken (the drive plans to disconnect by releasing the BSY signal) and a later reconnect will be required to complete the current I/O process. The message does not[...]

Messages Quantum DLT 7000 Tape System 4- 7 4.2.5 IDENTIFY Message (80h - FFh) The IDENTIFY message is sent by either the initiator or the drive to establish or re-establish the physical connection path between an initiator and target for a particular logical unit under the conditions listed below. Figure 4–2 shows the format of the IDENTIFY messa[...]

Messages 4- 8 Quantum DLT 7000 Tape System 4.2.6 IGNORE WIDE RESIDUE Message (23h) The IGNORE WIDE RESIDUE message is sent by the target to the initiator to indicate that the number of valid bytes sent during the last REQ/ACK handshake and REQB/ACKB handshake of a DATA IN phase is less than the negotiated transfer width. The Ignore field indicates [...]

Messages Quantum DLT 7000 Tape System 4- 9 4.2.7 INITIATOR DETECTED ERROR Message (05h) The INITIATOR DETECTED ERROR message is sent from an initiator to inform the drive that an error has occurred that does not preclude the drive from retrying the operation (a bus parity error, for example). The source of the error may either be related to previou[...]

Messages 4- 10 Quantum DLT 7000 Tape System 4.2.8 LINKED COMMAND COMPLETE Message (0Ah) This message is sent from a target to an initiator to indicate that the execution of a linked command (with the FLAG bit set to zero) is complete and that status has been sent. The initiator then sets the pointers to the initial state for the next command. If re[...]

Messages Quantum DLT 7000 Tape System 4- 11 4.2.12 NO OPERATION (08h) If a target requests a message, the initiator sends a NO OPERATION message if it does not currently have any other valid message to send. The message is accepted when the drive is acting as a target and may be sent when it is an initiator. If a NO OPERATION message is received du[...]

Messages 4- 12 Quantum DLT 7000 Tape System NOTE The tape drive supports initiating synchronous transfer negotiations with the host, but this feature is disabled by default. To enable it, set the MODE SELECT VU ERROM parameter EnaInitSyncNeg. Bit Byte 7 6543 210 0 Extended Message Identifier (01h) (see Figure 4-1) 1 Length (03h) 2 Message Code (01h[...]

Messages Quantum DLT 7000 Tape System 4- 13 4.2.16 WIDE DATA TRANSFER REQUEST Message (01h) The following figure illustrates the message formats. Bit Byte 7 6543 210 0 Extended Message Identifier (01h) (see Figure 4-1) 1 Extended Message Length (02h) 2 WIDE DATA TRANSFER REQUEST 3 Transfer Width Exponent Figure 4 –5 Wide Data Transfer Request Mes[...]

Messages 4- 14 Quantum DLT 7000 Tape System The transfer width is two the transfer width exponent bytes wide. The transfer width that is established applies to all logical units. Valid transfer widths for the DLT 7000 tape drive are 8 bits (m = 00h) and 16 bits (m = 01h). Values of m greater than 01h is reserved.[...]

Quantum DLT 7000 Tape System 5- 1 Chapter 5 SCSI COMMANDS This chapter describes the SCSI protocol features implemented in the DLT 7000 tape system. Note that the sections included in this chapter do not fully reiterate every ANSI SCSI message, option, and/or command code specification; the sections do describe the supported commands, messages, opt[...]

SCSI Commands 5- 2 Quantum DLT 7000 Tape System Table 5 – 1 Supported SCSI Commands (continued) Command Operation Code Section RELEASE UNIT 17h 5.17 REQUEST SENSE 03h 5.18 RESERVE UNIT 16h 5.19 REWIND 01h 5.20 SEND DIAGNOSTIC 1Dh 5.21 SPACE 11h 5.22 TEST UNIT READY 00h 5.23 VERIFY 13h 5.24 WRITE 0Ah 5.25 WRITE BUFFER 3Bh 5.26 WRITE FILEMARKS 10h [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 3 5.1.1 SCSI Pointers SCSI architecture provides a set of three pointers (called saved pointers) for each I/O process. The three pointers are: Command, Status, and Data. When an I/O process becomes active, the three saved pointers are copied to the initiator as current pointers. There is only one set of[...]

SCSI Commands 5- 4 Quantum DLT 7000 Tape System 5.1.2 Command Descriptor Block An initiator communicates with the drive by sending a 6- or 10-byte Command Descriptor Block that contains the parameters for the specific command. The SCSI command's operation code is always the first byte in the Command Descriptor Block and a control field is the [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 5 Table 5 – 2 Command Descriptor Block - Field Descriptions Field Description Operation Code The operation code specifies the command being requested. The list of supported SCSI commands and their operation codes are contained in Table 5–1. Logical Unit Number The Logical Unit Number contains the nu[...]

SCSI Commands 5- 6 Quantum DLT 7000 Tape System Bit Byte 7 6 5 4 3 2 1 0 5 Vendor Specific Reserved 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. Flag Bit The Flag bit is used in conj[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 7 The status code is contained in bits 1 through 5 of the status byte. Bits 0, 6, and 7 are reserved. Table 5–4 describes the status codes returned by the drive. NOTE In contrast to the BUSY status condition, the DRIVE NOT READY Sense Key is returned as part of the Sense data following a REQUEST SENSE[...]

SCSI Commands 5- 8 Quantum DLT 7000 Tape System 5.1.4 DATA-Phase 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 "Length in CDB" colu[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 9 Table 5 – 5 DATA-Phase Command Contents Command Length in CDB Data Out (To Drive) Data In (To Initiator) ERASE 0 INQUIRY Allocation --- Standard Inquiry or a Vital Product Data page LOAD UNLOAD 0 --- --- LOCATE 0 --- --- LOG SELECT Parameter List (must be 0) --- --- LOG SENSE Allocation --- Log Page[...]

SCSI Commands 5- 10 Quantum DLT 7000 Tape System Table 5 – 5 DATA-Phase Command Contents (Continued) Command Length in CDB Data Out (To Drive) Data In (To Initiator) REWIND 0 --- --- SEND DIAGNOSTIC Parameter List Diagnostic Page --- SPACE 0 --- --- TEST UNIT READY 0 --- --- VERIFY Transfer Data --- WRITE Transfer Data --- WRITE BUFFER Parameter [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 11 5.1.6 Behavior at Power-On and SCSI Bus Reset The following apply to the DLT 7000 system tape drive’s behavior at power-on and/or SCSI bus reset: • When the Quantum DLT 7000 system is powered up, all device SCSI lines are set to high impedance. • The design of the DLT 7000 system tape drive doe[...]

SCSI Commands 5- 12 Quantum DLT 7000 Tape System • When a WRITE 0 FILEMARKS command is issued. • When data has been in the cache longer than the maximum time specified by the value of the Mode Parameter “Write Delay Time” (the default is 30 seconds). • When a non-write type media access command is received (for example, SPACE, READ, UNLOA[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 13 Throughout this manual, multiple bytes that contain information about specific command parameters are portrayed as shown in the example of the Parameter List Length field (bytes 7 and 8) of the Log Select command shown below: Bit Byte 7 6543 210 (Bytes 0 - 6) 7 - 8 (MSB) Parameter List Length (LSB) A[...]

SCSI Commands 5- 14 Quantum DLT 7000 Tape System 5.3 ERASE COMMAND ( 19 h ) The ERASE command causes data on the tape medium to be erased. Any WRITE data currently held in buffer memory and not yet written to tape is written to tape before the ERASE command is executed. ERASE command must be issued while at BOT. Note that the time for a complete er[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 15 5.4 INQUIRY COMMAND (12 h ) 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 Storage Device that implements the [...]

SCSI Commands 5- 16 Quantum DLT 7000 Tape System INQUIRY Command (12h) (continued) Table 5 –7 INQUIRY Command Descriptor Block - Field Descriptions Field Description EVPD Enable Vital Product Data. If 0, the drive returns the Standard Inquiry Data page. If 1, the drive returns the Vital Product Data page specified in Page Code. Page Code Specifie[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 17 INQUIRY Command (12h) (continued) Bit Byte 7 6543 210 0 Peripheral Qualifier Peripheral Device Type 1 RMB Device Type Modifier 2 ISO Version ECMA Version ANSI Version 3 AENC TrmIOP Reserved Response Data Format 4 Additional Length = 33h 5 Reserved 6 Rsv’d MChngr Reserved 7 RelAdr Wbus32 Wbus16 Sync[...]

SCSI Commands 5- 18 Quantum DLT 7000 Tape System INQUIRY Command (12h) (continued) Table 5–9 contains field descriptions for the data returned by the drive. Table 5 –9 Standard Inquiry Data Page - Field Descriptions Field Name Value Description Peripheral Qualifier 0 Non-zero if initiator selects an invalid logical unit (see below) Peripheral D[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 19 INQUIRY Command (12h) (continued) Table 5 –9 Standard Inquiry Data Page - Field Descriptions (continued) Field Name Value Description Sync 1 The drive supports Synchronous Data Transfers. Linked 1 Linked Commands are supported. CmdQue 0 The drive does not support Tagged Command Queuing. SftRe 0 The[...]

SCSI Commands 5- 20 Quantum DLT 7000 Tape System INQUIRY Command (12h) (continued) Bit Byte 7 6543 210 36 Product Family (7) Released Firmware 37 Firmware Major Version # 38 Firmware Minor Version # 39 EEPROM Format Major Version # 40 EEPROM Format Minor Version # 41 Firmware Personality 42 Firmware Sub-Personality 43 Firmware Subtype 44 Controller[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 21 INQUIRY Command (12h) (continued) Table 5 –10 Vendor Unique Inquiry Data Page - Field Descriptions Field Name Description Product Family This field indicates the data density of each of the DLT tape drives as follows: Bit 0 1 2 3 5 6 7 Drive Density Not Specified 2.6 GB 6.0 GB 10.0 / 20.0 GB 20.0 /[...]

SCSI Commands 5- 22 Quantum DLT 7000 Tape System INQUIRY Command (12h) (continued) 5.4.3 Supported Vital Product Data Page The Supported Vital Product Data Pages page (Figure 5–7) provides a directory of the Vital Product Data Pages that are supported by the drive. The pages that are supported are: • The Unit Serial Number Page (80h) • The Fi[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 23 INQUIRY Command (12h) (continued) Bit Byte 7 6543 210 0 Peripheral Qualifier Peripheral Device Type 1 Page Code (80h) 2 Reserved 3 Page Length (0Ah) 4 - 13 Serial Number Figure 5 –8 Unit Serial Number Page (80h) - Data Format Table 5 –11 Unit Serial Number Page - Field Descriptions Field Name Des[...]

SCSI Commands 5- 24 Quantum DLT 7000 Tape System INQUIRY Command (12h) (continued) Bit Byte 7 6543 210 0 Peripheral Qualifier Peripheral Device Type 1 Page Code (C0h) 2 Reserved 3 Page Length (20h) 4 - 5 Servo Firmware Checksum 6 - 7 Servo EEPROM Checksum 8 - 11 Read/Write Firmware Checksum 12 - 35 Read/Write Firmware Build Data Figure 5 –9 Firmw[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 25 INQUIRY Command (12h) (continued) Bit Byte 7 6543 210 0 Peripheral Qualifier Peripheral Device Type 1 Page Code (C1h) 2 Reserved 3 Page Length (14h) 4 Product Family (8) Released Firmware 5 Firmware Major Version # 6 Firmware Minor Version # 7 EEPROM Format Major Version # 8 EEPROM Format Minor Versi[...]

SCSI Commands 5- 26 Quantum DLT 7000 Tape System INQUIRY Command (12h) (continued) Table 5 –13 Subsystem Components Revision Page - Field Descriptions Field Name Description Product Family This field indicates the data density of each of the DLT tape drives as follows: Bit 0 1 2 3 5 6 7 Drive Density Not Specified 2.6 GB 6.0 GB 10.0 / 20.0 GB 20.[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 27 5.5 LOAD UNLOAD COMM AND (1B h ) The LOAD UNLOAD command tells the target to load or unload the tape media in the tape cartridge. If no cartridge is in the tape drive, both LOAD and UNLOAD return a CHECK CONDITION status with a NOT READY sense key set. Likewise, if the drive has received an UNLOAD co[...]

SCSI Commands 5- 28 Quantum DLT 7000 Tape System LOAD UNLOAD Command (1Bh) (continued) NOTES The sequential loading feature of the loader can be enabled/disabled by modifying the ENALDRAUTOLD and DISLDRAUTOLDMC parameters of EEPROM (mode page 3Eh of the MODE SELECT command). A media loader does not affect the tape drive’s processing of the LOAD p[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 29 LOAD UNLOAD Command (1Bh) (continued) Table 5 –14 LOAD UNLOAD Command Descriptor Block - Field Descriptions Field Name Description Immed Immediate. If this bit is set to 1, status is returned as soon as the operation is started. If set to 0, status is returned after the operation has completed. Re-[...]

SCSI Commands 5- 30 Quantum DLT 7000 Tape System 5.6 LOCATE COMMAND (2B h ) The LOCATE command is used to do high-speed positioning to the specified block address. The READ POSITION command can be used to obtain the block address, when writing, when particular blocks of data (a data file, for example) are about to be written. The LOCATE command can[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 31 LOCATE Command (2Bh) (continued) Table 5 –15 LOCATE Command Descriptor Block - Field Descriptions Field Name Description BT Block Type. The Block Type bit indicates how the Block Address field is interpreted. The first recorded object (block or filemark) is at address 0, and Block Addresses count b[...]

SCSI Commands 5- 32 Quantum DLT 7000 Tape System 5.7 LOG SELECT COMMA ND (4C h ) The LOG SELECT command allows the host to manage statistical information maintained by the tape drive about its own hardware parameters or about the installed tape medium. The description should be read in conjunction with the description of the LOG SENSE command that [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 33 LOG SELECT Command (4Ch) (continued) Table 5 –16 LOG SELECT Command Descriptor Block - Field Descriptions Field Name Description PCR Parameter Code Reset. If this bit is set to 1 and the parameter list length is set to 0, all accumulated values of page codes 2, 3, and 32 are set to 0 and all thresh[...]

SCSI Commands 5- 34 Quantum DLT 7000 Tape System LOG SELECT Command (4Ch) (continued) 5.7.1 Log Detection Summary in LOG SELECT Command Descriptor Block The following conditions constitute errors that are detected by the drive in relation to the CDB. The request sense data is set to ILLEGAL REQUEST, INVALID FIELD IN CDB. The conditions that constit[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 35 LOG SELECT Command (4Ch) (continued) 5.7.3 Log Select Page Format Each log page begins with a 4-byte header followed by n number of log parameter blocks (one block for each parameter code). Each block, except for parameter code 05h is comprised of 8 bytes. The parameter block for code 05h is 12 bytes[...]

SCSI Commands 5- 36 Quantum DLT 7000 Tape System LOG SELECT Command (4Ch) (continued) Bit Byte 7 6543 210 0 -1 (MSB) Parameter Code (LSB) 2 DU DS TSD ETC TMC Rsv’d LP 3 Parameter Length 4 - 7 (MSB) Parameter Value (LSB) NOTE: Byte 2 is also referred to the Parameter Control Byte. Figure 5–15 LOG SELECT Log Parameters Format Table 5–18 LOG SEL[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 37 LOG SELECT Command (4Ch) (continued) Table 5–18 LOG SELECT Log Parameters Field Descriptions (continued) Field Name Description Parameter Code (continued) Note: Parameter codes 00h, 01h, and 04h always have a value of 0. Parameter value for 05h is 8 bytes; the parameter length is set to 8. DU Disab[...]

SCSI Commands 5- 38 Quantum DLT 7000 Tape System LOG SELECT Command (4Ch) (continued) Table 5–18 LOG SELECT Log Parameters Field Descriptions (continued) Field Name Description TMC (continued) The Current Cumulative Values are the values computed since the last reset of the device (either via power-cycle, BUS DEVICE RESET, or SCSI RESET). The Def[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 39 5.8 LOG SENSE COMMAN D (4D h ) The LOG SENSE command allows the host to retrieve statistical information maintained by the tape drive about its own hardware parameters or about the installed tape medium. It is a complementary command to LOG SELECT. Bit Byte 7 6543 210 0 Operation Code (4Dh) 1 Logical[...]

SCSI Commands 5- 40 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) Table 5 –19 LOG SENSE Command Descriptor Block - Field Descriptions Field Name Description PPC Parameter Pointer Control. This bit must be set to 0. A PPC of 0 indicates that the parameter data requested from the device starts with the parameter code specified in[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 41 LOG SENSE Command (4Dh) (continued) Table 5 –19 LOG SENSE Command Descriptor Block - Field Descriptions (continued) Field Name Description Page Code The Page Code field identifies which log page is being requested by the initiator. If the page is not supported, then the command terminates with a CH[...]

SCSI Commands 5- 42 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) 5.8.1 Error Detection Summary in LOG SE NSE Command Descriptor Block The following conditions constitute errors detected by the drive relating to the LOG SENSE command descriptor block. The request sense data is set to ILLEGAL REQUEST, INVALID FIELD IN CDB. Error c[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 43 LOG SENSE Command (4Dh) (continued) 5.8.2 Supported Pages Log Page (Page 00h) When page 00h is requested, the 4-byte page header is returned, followed by the pages supported in ascending order, one byte for each. Bit Byte 7 6543 210 0 Reserved Page Code (00h) 1 Reserved 2 - 3 (MSB) Page Length (05h) [...]

SCSI Commands 5- 44 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) 5.8.3 Read (Page 03h) / Write (Page 02h) Error LOG S ENSE Page Each Log page begins with a 4-byte header followed by a number of log parameter blocks. Each block consists of 8 bytes except for parameter code 05h. The log parameter block for the parameter total byte[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 45 LOG SENSE Command (4Dh) (continued) Bit Byte 7 6543 210 0 -1 (MSB) Parameter Code (LSB) 2 DU DS TSD ETC TMC Rsv’d LP 3 Parameter Length 4 - 11 (MSB) Parameter Value (LSB) NOTE: Byte 2 is also referred to the Parameter Control Byte. Figure 5–19 Log Parameters Format for Read /Write Error LOG SENSE[...]

SCSI Commands 5- 46 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) Table 5–21 Log Parameters for Read /Write Error LOG SENSE Page Field Descriptions (continued) Field Name Description Parameter Code (continued) 8000h - Vendor Unique 9000h - Vendor Unique Note: Parameter codes 00h, 01h, and 04h always return a value of 0. Paramet[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 47 LOG SENSE Command (4Dh) (continued) Table 5–21 Log Parameters for Read / Write Error LOG SENSE Page Field Descriptions (continued) Field Name Description TMC (continued) The criteria for comparison are: Code - Basis of Comparison 00b - Every update of the cumulative value 01b - Cumulative value equ[...]

SCSI Commands 5- 48 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) 5.8.4 Last n Error Events Page (07h) This page returns one parameter at a time that contains the ASCII text for the specified event log. The Parameter Number field in the CDB specifies the log event to return. The log events in EEPROM are numbered from 0 to 255, af[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 49 LOG SENSE Command (4Dh) (continued) Bit Byte 7 6543 210 0 -1 (MSB) Parameter Code (LSB) 2 DU DS TSD ETC TMC Rsv’d LP 3 Parameter Length 4 - n (MSB) Hex ASCII String for Event n (LSB) Figure 5–21 Log Parameters Format for Last n Error Events LOG SENSE Page Table 5–23 Log Parameters for Last n Er[...]

SCSI Commands 5- 50 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) 5.8.5 TapeAlert Page (2Eh) This page returns results of the tape drive’s on-going self diagnosis, so that the tape drive’s behavior can be monitored and high reliability ensured. The TapeAlert page is read from the tape drive at the beginning of each READ/WRITE[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 51 LOG SENSE Command (4Dh) (continued) Bit Byte 7 6543 210 5 n –1 to 5 n (MSB) Parameter Code ( n ) (LSB) 5 n + 1 DU DS TSD ETC TMC Rsv’d LP 5 n + 2 Parameter Length (1) 5 n + 3 Value of TapeAlert Flag (Flag is set when Bit 0 = 1; Bits 1 – 7 are Reserved) Figure 5–23 TapeAlert Page Log Parameter[...]

SCSI Commands 5- 52 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) Table 5–26 TapeAlert Flags, Severity Levels, and Meanings Flag Severity Level * Meaning 1 Read Warning Warning Problems reading data. There is no loss of data, but the tape drive’s performance is reduced. 2 Write Warning Warning Problems writing data. There is [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 53 LOG SENSE Command (4Dh) (continued) Table 5–26 TapeAlert Flags, Severity Levels, and Meanings (continued) Flag Severity Level * Meaning 22 Expired Cleaning Media Critical The cleaning cartridge that was used has expired. Wait for all tape drive operations to complete, then use a valid cleaning cart[...]

SCSI Commands 5- 54 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) 5.8.6 Read / Write Compression Page (32h) This page begins with a 4-byte header followed by the log parameter blocks of 6 or 8 bytes, depending on the Parameter Code selected. Bit Byte 7 6543 210 0 Reserved Page Code (32h) 1 Reserved 2 - 3 (MSB) Additional Length ([...]

SCSI Commands Quantum DLT 7000 Tape System 5- 55 LOG SENSE Command (4Dh) (continued) Bit Byte 7 6543 210 0 -1 (MSB) Parameter Code (LSB) 2 DU DS TSD ETC TMC Rsv’d LP 3 02h 4 - n (MSB) Compression Ratio x 100 (LSB) Figure 5–25 Log Parameters Format for Read / Write Compression Ratio LOG SENSE Page (Parameter Codes 00h and 01h) Table 5–28 Log P[...]

SCSI Commands 5- 56 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) Bit Byte 7 6543 210 0 -1 (MSB) Parameter Code (LSB) 2 DU DS TSD ETC TMC Rsv’d LP 3 04h 4 - 7 (MSB) Counter Value (LSB) Figure 5–26 Log Parameters Format for Read / Write Compression Ratio LOG SENSE Page (Parameter Codes 02h through 09h) Table 5–29 Log Paramet[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 57 LOG SENSE Command (4Dh) (continued) Table 5–29 Log Parameters for Read / Write Compression Ratio LOG SENSE Page Field Descriptions (Parameter Codes 02h through 09h) (continued) Field Name Description DU Disable Update. Always 0. DS Disable Save. Not supported. This bit always set to 1. TSD Target S[...]

SCSI Commands 5- 58 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) Table 5–29 Log Parameters for Read / Write Compression Ratio LOG SENSE Page Field Descriptions (Parameter Codes 02h through 09h) (continued) Field Name Description Counter Value (continued) Parameter Codes 06h and 07h -- Report the count of bytes transferred from[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 59 LOG SENSE Command (4Dh) (continued) 5.8.7 Device Wellness Page (33h) The Device Wellness Page returns information about any check conditions related to Sense Keys 1, 3, 4, and 9 logged by the tape drive. Up to 16 entries (parameter code 0000h to 000Fh) can be contained in the page; each entry records[...]

SCSI Commands 5- 60 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) Bit Byte 7 6543 210 0 Parameter Code 1 Reserved 2 DU DS TSD ETC TMC Rsv’d LP 3 - 7 (MSB) Time Stamp (LSB) 8 - 11 (MSB) Media ID (LSB) 12 Sense Key 13 Additional Sense Key 15 Additional Error Information Figure 5–28 Log Parameters Format for Device Wellness LOG [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 61 LOG SENSE Command (4Dh) (continued) Table 5–31 Log Parameters for Device Wellness LOG SENSE Page Field Descriptions Field Name Description Parameter Code Parameter Codes 0000h through 000Fh are supported. This provides 16 log entries for error information capture. DU Disable Update. Always 0. DS Di[...]

SCSI Commands 5- 62 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) 5.8.8 Device Status Page (3Eh) The Device Status Page describes the current status of the tape drive. Bit Byte 7 654 3210 0 Reserved Page Code (3Eh) 1 Reserved 2 - 3 (MSB) Page Length (LSB) Figure 5–29 Device Status LOG SENSE Header Format Table 5–32 Device Sta[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 63 LOG SENSE Command (4Dh) (continued) Bit Byte 7 6543 210 0 - 1 Parameter Code 2 DU DS TSD ETC TMC Rsv’d LP 3 Parameter Length (04h) 4 - 7 (MSB) Parameter Value (LSB) Figure 5–30 Log Parameters Format for Device Status LOG SENSE Page (Parameters 0000h, 0001h, or 0002h) Table 5–33 Log Parameters f[...]

SCSI Commands 5- 64 Quantum DLT 7000 Tape System LOG SENSE Command (4Dh) (continued) Table 5–33 Log Parameters for Device Status LOG SENSE Page Field Descriptions (continued) Field Name Description DU Disable Update. Always 0. DS Disable Save. Not supported. This bit always set to 1. TSD Target Save Disable. When = 0, indicates that the target pr[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 65 5.9 MODE SELECT (6) / (10) COMMAND (15 h / 55 h ) The MODE SELECT command (available in either 6- or 10-byte format) enables the host to configure the tape drive. Implementing MODE SELECT and MODE SENSE requires “handshaking” between the host and the drive. Before configuring the drive, the host [...]

SCSI Commands 5- 66 Quantum DLT 7000 Tape System Mode Select (6) Command Descriptor Block - Data Format Bit Byte 7 6543 210 0 Operation Code (15h) 1 Logical Unit Number PF Reserved SP (0) 2 - 3 Reserved 4 Parameter List Length 5 Unused (00) Reserved Flag Link Mode Select (10) Command Descriptor Block - Data Format Bit Byte 7 6543 210 0 Operation Co[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 67 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –35 MODE SELECT (6)/(10) Command Descriptor Block - Field Descriptions Field Name Description PF Page Format. The Page Format bit indicates that the data sent by the host after the MODE SELECT header and block descriptors complies wit[...]

SCSI Commands 5- 68 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –36 MODE SELECT Mode Parameter List - Field Descriptions Field Name Description Mode Parameter Header 4 bytes in length, contains information about the remainder of the Parameter List and is always present (see Figure 5-34 and Table 5[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 69 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –37 MODE SELECT Mode Parameter Header - Field Descriptions Field Name Description Media Type This field is ignored by the MODE SELECT command. Buffered Mode Default = 1. The drive implements immediate reporting on WRITE commands throu[...]

SCSI Commands 5- 70 Quantum DLT 7000 Tape System MODE SELECT (6) /(10) Command (15h) /(55h) (continued) 5.9.1.2 Mode Parameter Block Descriptor The figure and table that follow provide an illustration and description of the fields that make up the MODE SELECT command’s Mode Parameter Block Descriptor. Bit Byte 7 6543 210 0 Density Code 1 - 3 (MSB[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 71 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –38 MODE SELECT Mode Parameter Block Descriptor - Field Descriptions Field Name Description Density Code This field should match the current tape medium density; it is set to 0 if the density is unknown. Density Code 00h 0Ah 16h 17h 1[...]

SCSI Commands 5- 72 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –38 MODE SELECT Mode Parameter Block Descriptor - Field Descriptions (continued) Field Name Description Number of Blocks This MODE SENSE field is sent = 0, indicating that all of the remaining logical blocks on the tape will have the [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 73 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –39 MODE SELECT Page Descriptor - Field Descriptions Field Name Description PS Parameters Savable. For the MODE SELECT (6) (10) commands, this field is reserved (0). Additional Page Length Indicates number of bytes in that page (not i[...]

SCSI Commands 5- 74 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –40 Error Recovery Page - Field Descriptions Field Name Description PS Parameters Savable. For MODE SELECT, this bit must be 0. Additional Page Length This field indicates the number bytes in the page. However, the value does not incl[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 75 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) 5.9.3 Disconnect / Reconnect Page (02h) The Disconnect / Reconnect Page controls the drive’s behavior on the SCSI bus and allows an initiator to tune bus performance. Bit Byte 7 6543 210 0 PS (0) 0 Page Code (02h) 1 Additional Page Length (0E[...]

SCSI Commands 5- 76 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –41 Disconnect / Reconnect Page - Field Descriptions Field Name Description PS Parameters Savable. For MODE SELECT, this bit must be 0. Additional Page Length This field indicates the number bytes in the page. However, the value does [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 77 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –41 Disconnect / Reconnect Page - Field Descriptions (continued) Field Name Description DTDC Data Transfer Disconnect Control. This field defines further restrictions for when disconnect is permitted. DTDC Description 00b Data transfe[...]

SCSI Commands 5- 78 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) 5.9.4 Control Mode Page (0Ah) The Control Mode Page provides control over several features such as tagged queuing, extended contingent allegiance, asynchronous event notification, and error logging. Bit Byte 7 6543 210 0 PS (0) Rsv’d Page Cod[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 79 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –42 Control Mode Page Descriptor - Field Descriptions Field Name Description PS Parameters Savable. For MODE SELECT, this bit must be 0. Page Length The Page Length field indicates the number of bytes in the Control Mode Page that fol[...]

SCSI Commands 5- 80 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) 5.9.5 Data Compression Page (0Fh) The Data Compression page specifies parameters for the control of data compression. This page allows the user to turn the tape drive’s compressed format on and off independently of the tape medium’s positio[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 81 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –43 Data Compression Page Descriptor - Field Descriptions Field Name Description Page Code The Page Code identifies the type of MODE SELECT page being transferred. A value of 0Fh identifies this as the Data Compression page. Page Leng[...]

SCSI Commands 5- 82 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) 5.9.6 Device Configuration Page (10h) The Device Configuration Page controls the drive’s behavior on the SCSI bus and allows an initiator to tune bus performance. Bit Byte 7 6543 210 0 PS (0) 0 Page Code (10h) 1 Additional Page Length (0Eh) 2[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 83 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –44 Device Configuration Page - Field Descriptions Field Name Description PS Parameters Savable. For MODE SELECT, this bit must be 0. Additional Page Length This field indicates the number bytes in the page. However, the value does no[...]

SCSI Commands 5- 84 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –44 Device Configuration Page - Field Descriptions (continued) Field Name Description DBR Data Buffer Recovery. Not supported, must be 0. BIS Block Identifiers Supported. This field is supported. Set to 1. RSmk Report Setmark. Not sup[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 85 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) 5.9.7 Medium Partition Page (11h) The drive supports the Medium Partitions Parameters Page that is used to specify the medium partitions. Bit Byte 7 6543 210 0 PS (0) 0 Page Code (11h) 1 Additional Page Length (06) 2 Maximum Additional Partitio[...]

SCSI Commands 5- 86 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –45 Medium Partition Page Descriptor - Field Descriptions Field Name Description PS Parameters Savable. For MODE SELECT, this bit must be 0. Additional Page Length This field indicates the number bytes in the page. However, the value [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 87 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) 5.9.8 TapeAlert Page (1Ch) The drive supports the TapeAlert Page that is used to set/change the supported TapeAlert configuration options (use the MODE SENSE command to read the settings of the TapeAlert page). Bit Byte 7 6543 210 0 PS (0) 0 Pa[...]

SCSI Commands 5- 88 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –46 TapeAlert Page Format Descriptor - Field Descriptions Field Name Description PS Parameters Savable. For MODE SELECT, this bit must be 0. Additional Page Length This field indicates the number bytes in the page. However, the value [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 89 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –46 TapeAlert Page Format Descriptor - Field Descriptions (continued) Field Name Description MRIE Method for Reporting Informational Exceptions. The tape drive uses the contents of this field to report information about exception cond[...]

SCSI Commands 5- 90 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) 5.9.9 EEPR OM Vendor Unique Page (3Eh) The drive supports a vendor unique page that enables a user to modify savable parameters. Only one savable parameter may be changed per Mode Select command. Bit Byte 7 6543 210 0 PS Rsv’d Page Code (3Eh)[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 91 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –47 EEPROM Vendor Unique Page Parameters Name Value Rep. Default Length (Bytes) Usage VENDORID ASCII QUANTUM 8 Vendor Identification field in INQUIRY Data PRODUCTID ASCII DLT 7000 16 Product Identification field in INQUIRY Data CACHET[...]

SCSI Commands 5- 92 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –47 EEPROM Vendor Unique Page Parameters (continued) Name Value Rep. Default Length (Bytes) Usage ENACLNGLTRPT ASCII Binary 1 1 To report error status if cleaning indicator is on. ENAGRANULARITY ASCII Binary 1 1 Enables granularity fi[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 93 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –47 EEPROM Vendor Unique Page Parameters (continued) Name Value Rep. Default Length (Bytes) Usage ENBINQMEDCHGR ASCII Binary 0 1 0 = Disable media changer bit 1 = Enable media changer bit in byte 6 of INQUIRY data (set if drive is in [...]

SCSI Commands 5- 94 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –47 EEPROM Vendor Unique Page Parameters (continued) Name Value Rep. Default Length (Bytes) Usage HOSTCOMPSETTING (continued) 0 = Use default compression setting (use with PERFMODE set to 1 for best performance with DLT 7000 tape driv[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 95 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –47 EEPROM Vendor Unique Page Parameters (continued) Name Value Rep. Default Length (Bytes) Usage MAXBURSTSIZE ASCII Binary 0080h 2 The value in this field specifies the maximum amount of data to be transferred without disconnecting. [...]

SCSI Commands 5- 96 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –47 EEPROM Vendor Unique Page Parameters (continued) Name Value Rep. Default Length (Bytes) Usage PROTECTDIRONWP ASCII Binary 0 1 To protect tape directory if the cartridge write-protect switch is in its write protect position. REDUND[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 97 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) Table 5 –47 EEPROM Vendor Unique Page Parameters (continued) Name Value Rep. Default Length (Bytes) Usage SCSIRESELRETRIES ASCII Decimal 10 1 The number of reselection retries the drive makes before giving up. Each reselection retry occurs ev[...]

SCSI Commands 5- 98 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) As an example of an EEPROM vendor unique page, the figure below shows a page that will modify the VENDORID parameter to “XXXYY.” 0 0 0 Page Code (3Eh) 1 Page Length (0Fh) 2 “v” (76h) 3 “e” (65h) 4 “n” (6Eh) 5 “d” (64h) 6 “[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 99 MODE SELECT (6) / (10) Command (15h) / (55h) (continued) An example follows that illustrates an EEPROM vendor unique page that modifies the FORCEDENSITY parameter to 4. 0 0 0 Page Code (3Eh) 1 Page Length (0Fh) 2 “F” (46h) 3 “O” (4Fh) 4 “R” (52h) 5 “C” (43h) 6 “E” (45h) 7 “D” [...]

SCSI Commands 5- 100 Quantum DLT 7000 Tape System MODE SELECT (6) / (10) Command (15h) / (55h) (continued) 5.9.10 Changeable Parameters within MODE SELECT The table below lists the MODE SELECT command’s changeable parameters and their default, minimum, and maximum values. Descriptions of the various parameters are provided in the discussions of t[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 101 5.10 MODE SENSE (6) / (10) COMMAND (1A h / 5A h ) The MODE SENSE command allows the drive to report its media type, and current, or changeable configuration parameters to the host. It is a complementary command to MODE SELECT. The command descriptor block for the 6-byte MODE SENSE (1Ah) is shown bel[...]

SCSI Commands 5- 102 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Bit Byte 7 6543 210 0 Operation Code (5Ah) 1 Logical Unit Number Rsv’d DBD Reserved 2 PC Page Code 3 - 6 Reserved 7 - 8 (MSB) Allocation Length (LSB) 9 Unused Reserved Flag Link Figure 5 –48 MODE SENSE (10) Command Descriptor Block - Data For[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 103 MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –49 MODE SENSE Control Descriptor Block - Field Descriptions Field Name Description DBD Disable Block Descriptors. If 0, device returns the block descriptor data. If set to 1, block descriptor information is not returned. PC Page Contro[...]

SCSI Commands 5- 104 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) 5.10.1 MODE SENSE Data Headers The MODE SENSE (6) and MODE SENSE (10) headers are illustrated in the following figures. Bit Byte 7 6543 210 0 Mode Sense Data Length 1 Media Type 2 WP Buffered Mode Speed (0) 3 Block Descriptor Length (08h) Figure [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 105 MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –50 MODE SENSE Data Header - Field Descriptions Field Name Description Mode Sense Data Length This field specifies the length (in bytes) of the MODE SENSE data that is available to be transferred during the DATA IN phase. Note that the [...]

SCSI Commands 5- 106 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) 5.10.2 MODE SENSE Block Descriptor The following figure describes the MODE SENSE block descriptor that follows the MODE SENSE header. Descriptions of the MODE SENSE blocks are provided in Table 5-51. Bit Byte 7 6543 210 0 Density Code 1 - 3 (MSB)[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 107 MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –51 MODE SENSE Block Descriptor - Field Descriptions Field Name Description Density Code The contents of this field match the density of the media, or 0 if the density is unknown: Density Code 00h 0Ah 16h 17h 18h 19h 1Ah 1Bh Description[...]

SCSI Commands 5- 108 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –51 MODE SENSE Block Descriptor - Field Descriptions (continued) Field Name Description Number of Blocks This field is sent as 0, indicating that all of the remaining logical blocks on the tape have the medium characteristics specified [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 109 MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –52 MODE SENSE Page Descriptor - Field Descriptions Field Name Description PS Parameters Savable. When 0, the supported parameters cannot be saved (savable pages are not supported). When set to 1, it indicates that the page can be saved[...]

SCSI Commands 5- 110 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) 5.10.3.1 READ / WRITE Error Recovery Page (01h) The tape drive supports the Error Recovery Page for READ and WRITE operations. The format for the page is illustrated in the following figure. Bit Byte 7 6543 210 0 PS (0) 0 Page Code (01h) 1 Additi[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 111 MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –53 Read / Write Error Recovery Page - Field Descriptions Field Name Description PS Parameters Savable. Must be 0, the supported parameters cannot be saved (savable pages are not supported). Additional Page Length This field indicates t[...]

SCSI Commands 5- 112 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) 5.10.3.2 DISCONNECT / RECONNECT Page (02h) The tape drive supports the DISCONNECT / RECONNECT Page. The format for the page is illustrated in the following figure. Bit Byte 7 6543 210 0 PS 0 Page Code (02h) 1 Additional Page Length (0Eh) 2 Buffer[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 113 MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –54 Disconnect / Reconnect Page - Field Descriptions Field Name Description PS Parameters Savable. When 0, the supported parameters cannot be saved (savable pages are not supported). When set to 1, it indicates that the page can be save[...]

SCSI Commands 5- 114 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) 5.10.3.3 Control Mode Page (0Ah) The Control Mode Page allows the user to determine whether the tape drive returns a CHECK CONDITION status when one of the WRITE and READ counters has reached a specified threshold. Bit Byte 7 6543 210 0 Reserved [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 115 MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –55 Control Mode Page - Field Descriptions Field Name Description Page Length The value in this field indicates the number of bytes in the Control Mode Page being transferred. The value for this byte is 06h. RLEC Report Log Exception Co[...]

SCSI Commands 5- 116 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) 5.10.3.4 Data Compression Page (0Fh) The Data Compression page specifies parameters for the control of data compression. Bit Byte 7 6543 210 0 PS (0) Rsv’d Page Code (0Fh) 1 Page Length (0E) 2 DCE DCC Reserved 3 DDE (0) RED (0) Reserved 4 - 7 ([...]

SCSI Commands Quantum DLT 7000 Tape System 5- 117 MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –56 Data Compression Page - Field Descriptions Field Name Description PS Parameters Savable. Not supported; must be 0. Page Length The value in this field indicates the number of bytes in the Control Mode Page being transferred. The val[...]

SCSI Commands 5- 118 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) 5.10.3.5 Device Configuration Page (10h) The tape drive supports the Device Configuration Page. The format for the page is illustrated in the following figure. Bit Byte 7 6543 210 0 PS (0) 0 Page Code (10h) 1 Additional Page Length (0Eh) 2 Rsv’[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 119 MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –57 Device Configuration Page - Field Descriptions Field Name Description PS Parameters Savable. Not supported; must be 0. Additional Page Length This field indicates the number of bytes in the page. Note that this value does not includ[...]

SCSI Commands 5- 120 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –57 Device Configuration Page - Field Descriptions (continued) Field Name Description SOCF Stop on Consecutive Filemarks. Set to 0. RBO Recover Buffer Order. Set to 0. REW Report Early Warning. Set to 0 (do not report early warning EOM [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 121 MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) 5.10.3.6 Medium Partition Page (11h) The tape drive supports the Medium Partition Page. The format for the page is illustrated in the following figure. Bit Byte 7 6543 210 0 PS (0) 0 Page Code (11h) 1 Additional Page Length (06h) 2 Maximum Additi[...]

SCSI Commands 5- 122 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –58 Medium Partition Page - Field Descriptions Field Name Description PS Parameters Savable. Not supported; must be 0. Additional Page Length This field indicates the number of bytes in the page. Note that this value does not include by[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 123 MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) 5.10.3.7 TapeAlert Page (1Ch) The TapeAlert configuration settings can be read via the MODE SENSE command’s TapeAlert Page. Bit Byte 7 6543 210 0 PS (0) 0 Page Code (1Ch) 1 Additional Page Length (0A) 2 Perf Reserved DExcpt Test Rsvd LogErr 3 R[...]

SCSI Commands 5- 124 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –59 TapeAlert Page Format Descriptor - Field Descriptions Field Name Description PS Parameters Savable. For MODE SELECT, this bit must be 0. Additional Page Length This field indicates the number bytes in the page. However, the value do[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 125 MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) Table 5 –59 TapeAlert Page Format Descriptor - Field Descriptions (continued) Field Name Description MRIE Method for Reporting Informational Exceptions. The tape drive uses the contents of this field to report information about exception condit[...]

SCSI Commands 5- 126 Quantum DLT 7000 Tape System MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) 5.10.3.8 EEPROM Vendor Unique Page (3Eh) The tape drive supports the EEPROM vendor unique page (3Eh). All the EEPROM parameters that are set via the MODE SELECT EEPROM Vendor Unique page are returned. NOTE Because of the length of the parameter l[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 127 5.11 PREVENT / ALLOW MEDIUM REMOVAL COMMAND (1E h ) This command enables or disables the unloading of the tape cartridge. Bit Byte 7 6543 210 0 Operation Code (1Eh) 1 Logical Unit Number Reserved 2 - 3 Reserved 4 Reserved Prevent 5 Unused Reserved Flag Link Figure 5 –60 PREVENT / ALLOW MEDIUM REMO[...]

SCSI Commands 5- 128 Quantum DLT 7000 Tape System 5.12 READ COMMAND ( 08 h ) This command transfers one or more data blocks or bytes to the initiator starting with the next block on the tape. Bit Byte 7 6543 210 0 Operation Code (08h) 1 Logical Unit Number Reserved SILI Fixed 2 - 4 (MSB) Transfer Length (LSB) 5 Unused Reserved Flag Link Figure 5 ?[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 129 READ Command (08h) Table 5 –61 READ Command Descriptor Block - Field Descriptions (continued) Field Name Description Fixed This bit specifies whether fixed-length or variable-length blocks are to be transferred, and gives meaning to the Transfer Length field of the READ command. When set to 0, var[...]

SCSI Commands 5- 130 Quantum DLT 7000 Tape System READ Command (08h) The meaning of EOD is different for a READ command than for a WRITE-related command. EOM is reported only when the physical EOM or End-of-Partition (EOP) is encountered. The drive returns a CHECK CONDITION status. The EOM and Valid bits are set and the Sense Key is set to MEDIUM E[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 131 5.13 READ BLOCK LIMI TS COMMAND (05 h ) The READ BLOCK LIMITS command directs the tape drive to report it’s block length limits. Bit Byte 7 6543 210 0 Operation Code (05h) 1 Logical Unit Number Reserved 2 - 4 Reserved 5 Unused Reserved Flag Link Figure 5 –62 READ BLOCK LIMITS Command Descriptor [...]

SCSI Commands 5- 132 Quantum DLT 7000 Tape System READ BLOCK LIMITS Command (05h) (continued) In SCSI-3 configurations, Byte 0 appears as shown below: 0 Reserved Granularity The Granularity field is described in the table below. Table 5 –62 READ BLOCK LIMITS Data - Field Descriptions Field Name Description Granularity (SCSI-3 Only) This field ind[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 133 5.14 READ BUFFER COM MAND (3C h ) The READ BUFFER command is used in conjunction with WRITE BUFFER as a diagnostic function for testing the drive’s data buffer for possible diagnostic data and for checking the integrity of the SCSI bus. In addition, by using buffers 1 and 2, the READ BUFFER comman[...]

SCSI Commands 5- 134 Quantum DLT 7000 Tape System READ BUFFER Command (3Ch) (continued) Table 5 –63 READ BUFFER Command Descriptor Block - Field Descriptions Field Name Description Mode The tape drive supports the following values within this field. If any non-supported value is set, the drive terminates the command with a CHECK CONDITION status,[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 135 READ BUFFER Command (3Ch) (continued) 5.14.1 Combined Header and Data Mode In this mode, the tape drive returns a 4-byte header followed by data bytes. The drive terminates the DATA IN phase when the Allocation Length bytes of header and data have been transferred or when all available data has been[...]

SCSI Commands 5- 136 Quantum DLT 7000 Tape System READ BUFFER Command (3Ch) (continued) 5.14.3 Descriptor Mode In this mode, a maximum of four bytes of READ BUFFER descriptor information is returned. The tape drive returns the descriptor information for the buffer specified by the Buffer ID. In this mode, the drive does not reject the valid Buffer [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 137 5.15 READ POSITION C OMMAND (34 h ) The READ POSITION command is used to read a position identifier or SCSI Logical Block Address (LBA). The LOCATE command uses this identifier to position back to this same logical position in a high-performance fashion. Bit Byte 7 6543 210 0 Operation Code (34h) 1 [...]

SCSI Commands 5- 138 Quantum DLT 7000 Tape System READ POSITION Command (34h) (continued) Data from READ POSITION takes the following format: Bit Byte 7 6543 210 0 BOP EOP Reserved BPU (0) Reserved 1 Partition Number 2 - 3 Reserved 4 - 7 (MSB) First Block Location (LSB) 8 - 11 (MSB) Last Block Location (LSB) 12 Reserved 13 - 15 (MSB) Number of Bloc[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 139 READ POSITION Command (34h) (continued) Table 5 –66 READ POSITION Data - Field Descriptions Field Name Description BOP Beginning of Partition. When set to 1, indicates that the logical unit is at the beginning of partition in the current partition. When 0, indicates that the current logical positi[...]

SCSI Commands 5- 140 Quantum DLT 7000 Tape System 5.16 RECEIVE DIAGNOS TIC RESULTS COMMAND (1C h ) The RECEIVE DIAGNOSTIC RESULTS command fetches the results of the last SEND DIAGNOSTIC command sent to the tape drive. Bit Byte 7 6543 210 0 Operation Code (1Ch) 1 Logical Unit Number Reserved 2 Reserved 3 - 4 (MSB) Allocation Length (LSB) 5 Unused Re[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 141 RECEIVE DIAGNOSTIC RESULTS Command (1Ch) (continued) The following data is returned by the drive as a result of the RECEIVE DIAGNOSTIC command. Note that a REQUEST SENSE command should be used to obtain more detailed information following a CHECK CONDITION on a SEND DIAGNOSTIC command. Bit Byte 7 65[...]

SCSI Commands 5- 142 Quantum DLT 7000 Tape System 5.17 RELEASE UNIT CO MMAND (17 h ) The RELEASE UNIT command releases the drive if it is currently reserved by the requesting initiator. It is not an error to release the tape drive if it is not currently reserved by the requesting initiator. If the tape drive is reserved by another initiator, howeve[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 143 RELEASE UNIT Command (17h) (continued) Media Changer Considerations The optional Element reservation feature defined for Medium Changer devices in the SCSI-2 ANSI specification is not supported. The RELEASE command is defined the same as for the tape drive. The whole loader unit can be released. RES[...]

SCSI Commands 5- 144 Quantum DLT 7000 Tape System 5.18 REQUEST SENSE C OMMAND (03 h ) The REQUEST SENSE command causes the tape drive to transfer detailed sense data to the initiator. Bit Byte 7 6543 210 0 Operation Code (03h) 1 Logical Unit Number Reserved 2 - 3 Reserved 4 Allocation Length 5 Unused Reserved Flag Link Figure 5 –72 REQUEST SENSE [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 145 REQUEST SENSE Command (03h) (continued) The REQUEST SENSE command causes the tape drive to transfer detailed sense data to the initiator. The sense data is valid for a CHECK CONDITION or RESERVATION CONFLICT status returned on the previous command. The sense data bytes are preserved by the tape driv[...]

SCSI Commands 5- 146 Quantum DLT 7000 Tape System REQUEST SENSE Command (03h) (continued) Bit Byte 7 6543 210 0 Valid Error Code 1 Segment Number (0) 2 Filemark EOM ILI Reserved Sense Key 3 - 6 (MSB) Information Bytes (LSB) 7 Additional Sense Length 8 - 11 (MSB) Command-Specific Information Bytes (LSB) 12 Additional Sense Code (ASC) 13 Additional S[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 147 REQUEST SENSE Command (03h) (continued) Table 5 –70 REQUEST SENSE Data - Field Descriptions Field Name Description Valid When set to 1, this field indicates that the information bytes contain valid information as defined in the ANSI SCSI-2 specification. Error Code A value of 70h indicates a curre[...]

SCSI Commands 5- 148 Quantum DLT 7000 Tape System REQUEST SENSE Command (03h) (continued) Table 5 –70 REQUEST SENSE Data — Field Descriptions (continued) Field Name Description Additional Sense Code This field (and the field for Additional Sense Code Qualifier) provide additional information about the Sense Key and cause of a CHECK CONDITION st[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 149 REQUEST SENSE Command (03h) (continued) Table 5 –71 Supported Sense Keys Sense Key Description 0h NO SENSE. Check the Filemark/EOM/ILI bits and the Additional Sense Code/Additional Sense Code Qualifier bytes. 1h RECOVERED ERROR. This can be caused by rounding of Mode Parameters on a MODE SELECT, o[...]

SCSI Commands 5- 150 Quantum DLT 7000 Tape System REQUEST SENSE Command (03h) (continued) The following table provides the additional sense codes (ASCs) and additional sense code qualifiers (ASCQs) that may be reported. Additional information, explanations, or suggestions for action are included in some of the descriptions. Table 5 –72 Supported [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 151 REQUEST SENSE Command (03h) (continued) Table 5 –72 Supported ASC / ASCQ in Hex (continued) Sense Key ASC ASCQ Description MEDIUM ERROR (cont.) 14 00 Recorded Entity Not Found (logical DLT block not found) 15 02 Position Error Detected by Read of Medium 30 00 Cannot Read Medium 30 01 Unknown Forma[...]

SCSI Commands 5- 152 Quantum DLT 7000 Tape System REQUEST SENSE Command (03h) (continued) Table 5 –72 Supported ASC / ASCQ in Hex (continued) Sense Key ASC ASCQ Description 04h 44 C3 Both EEROM Copy Areas Bad HARDWARE ERROR 47 00 SCSI Parity Error (cont.) 48 00 IDE Message Received 51 00 Erase Failure 53 00 Media Load/Eject Failure 53 01 Unload T[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 153 REQUEST SENSE Command (03h) (continued) Table 5 –72 Supported ASC / ASCQ in Hex (continued) Sense Key ASC ASCQ Description 06h 28 00 Not Ready To Ready Transition UNIT ATTENTION 29 00 Reset Occurred 2A 01 Mode Parameters Changed 2A 02 Log Parameters Changed 3F 01 Microcode has been Changed 5B 01 L[...]

SCSI Commands 5- 154 Quantum DLT 7000 Tape System REQUEST SENSE Command (03h) (continued) Table 5 –72 Supported ASC / ASCQ in Hex (continued) Sense Key ASC ASCQ Description 0Bh 48 00 IDE Message Error COMMAND 49 00 Invalid Message Error ABORTED 4B 00 Data Phase Error (cont.) 4E 00 Overlapped Commands Attempted (queue tag is not unique, CDB sent w[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 155 5.19 RESERVE UNIT CO MMAND (16 h ) The RESERVE UNIT command reserves the specified tape drive for exclusive use by the requesting initiator or for another specified SCSI device. Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code (16h) 1 Logical Unit Number 3rdPty Third Party Device ID Rsv’d 2 - 4 Reserved [...]

SCSI Commands 5- 156 Quantum DLT 7000 Tape System RESERVE UNIT Command (16h) (continued) A reservation via the RESERVE UNIT command remains in effect until one of the following conditions is met: • The initiator that made the reservation sends another RESERVE UNIT command. • The tape drive is released via a RELEASE UNIT command from the same in[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 157 5.20 REWIND COMMAND (01 h ) The REWIND command directs the tape drive to position the tape at the beginning of the currently active partition (for DLT drives, this is BOM). Before rewinding, the tape drive writes any write data that is in the buffer to the tape medium and appends an End of Data mark[...]

SCSI Commands 5- 158 Quantum DLT 7000 Tape System 5.21 SEND DIAGNOSTIC COMMAND (1D h ) The SEND DIAGNOSTIC command directs the tape drive to perform its self- diagnostic tests. Bit Byte 7 6543 210 0 Operation Code (1Dh) 1 Logical Unit Number PF (0) Rsv’d Selftst DevOfl UnitOfl 2 - 4 Reserved 5 Unused Reserved Flag Link Figure 5 –76 SEND DIAGNOS[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 159 SEND DIAGNOSTIC Command (1Dh) (continued) Two levels of unit-resident diagnostic tests can be accessed: Electronics Self-Test (Level 1 Test) To invoke this level of diagnostic test, a major portion of the controller hardware and software must be functioning properly. The test is based on the premise[...]

SCSI Commands 5- 160 Quantum DLT 7000 Tape System SEND DIAGNOSTIC Command (1Dh) (continued) The following table illustrates the possible settings of the Selftst, DevOfl, and UnitOfl bits and the effects of each setting on the resulting self-test: Table 5 –76 SEND DIAGNOSTIC CDB Bits Selftst, DevOfl, and UnitOfl Selftst DevOfl UnitOfl Self - Test [...]

SCSI Commands Quantum DLT 7000 Tape System 5- 161 SEND DIAGNOSTIC Command (1Dh) (continued) Table 5 –77 SEND DIAGNOSTIC Parameter List - Field Descriptions Field Name Description Pattern Number Indicates the type of data pattern to be used during the diagnostic tests. Pattern 0 1 2 3 4 5 6 7 8 9 (default) Name Rotate All 0s 2F Alternating 1s and [...]

SCSI Commands 5- 162 Quantum DLT 7000 Tape System SEND DIAGNOSTIC Command (1Dh) (continued) NOTE B ecause of data generation and verification, this test only streams the tape for short periods of time. If Block Count is set very high, the test can take many minutes or even many hours to complete. If the specified diagnostic test passes, a GOOD stat[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 163 5.22 SPACE COMMAND (11 h ) The SPACE command provides a variety of positioning functions that are determined by Code and Count fields in the Command Descriptor Block. Both forward (toward End of Medium/End of Partition) and reverse (toward Beginning of Medium/Beginning of Partition) positioning are [...]

SCSI Commands 5- 164 Quantum DLT 7000 Tape System SPACE Command (11h) (continued) Table 5 –80 SPACE Command Data - Field Descriptions (continued) Field Name Description Count When spacing over blocks or marks, the Count field is interpreted as follows: A positive value N causes forward motion over N blocks or marks. The tape is logically position[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 165 5.23 TEST UNIT READY COMMAND (00 h ) The TEST UNIT READY command checks the tape drive to ensure that the unit is ready for commands involving tape movement. If the drive has a tape loaded, the command returns a GOOD status. Otherwise, CHECK CONDITION is reported. Due to power cycle, code update, an[...]

SCSI Commands 5- 166 Quantum DLT 7000 Tape System 5.24 VERIFY COMMAND (13 h ) The VERIFY command directs the tape drive to verify one or more blocks beginning with the next block on the tape. Both CRC and EDCs are validated. Bit Byte 7 6543 210 0 Operation Code (13h) 1 Logical Unit Number Reserved Immed BC Fixed 2 - 4 (MSB) Verification Length (LSB[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 167 VERIFY Command (13h) (continued) Table 5 –81 VERIFY Command Data - Field Descriptions Field Name Description Immed Immediate. When set to 1, the VERIFY command completes before any tape medium movement is done (that is, when the processing has been initiated. BC Byte Check. When set to 0, the tape[...]

SCSI Commands 5- 168 Quantum DLT 7000 Tape System 5.25 WRITE COMMAND (0A h ) The WRITE command transfers one or more blocks from the host to the current logical position. When in Buffered Mode (the DLT tape drive default mode), the tape drive reports GOOD status on WRITE commands as soon as this data block has been transferred to the data buffer. A[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 169 WRITE Command (0Ah) (continued) Table 5 –82 WRITE Command Data — Field Descriptions (continued) Field Name Description Fixed (cont.) When the Fixed bit is 1, the Transfer Length field specifies the number of blocks to be transferred to the host beginning at the current tape position. This form o[...]

SCSI Commands 5- 170 Quantum DLT 7000 Tape System 5.26 WRITE BUFFER COMMAND (3B h ) The WRITE BUFFER command is used with READ BUFFER as a diagnostic function for testing the device data buffer, DMA engine, SCSI bus interface hardware, and SCSI bus integrity. It is also used for downloading and updating DLT microcode (firmware). Bit Byte 7 6543 210[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 171 WRITE BUFFER Command (3Bh) (continued) Table 5 –83 WRITE BUFFER Command Data - Field Descriptions Field Name Description Mode The tape drive supports the following values within the field. If any other value is set, the drive terminates the command with CHECK CONDITION status and an ILLEGAL REQUES[...]

SCSI Commands 5- 172 Quantum DLT 7000 Tape System WRITE BUFFER Command (3Bh) (continued) 5.26.3 Download Microcode Mode (100b) Using buffer offsets, the host can download the firmware image into the target’s buffer in pieces. These commands do not cause the new image to become active. A Download and Save Mode WRITE BUFFER command must be issued f[...]

SCSI Commands Quantum DLT 7000 Tape System 5- 173 5.27 WRITE FILEMARKS COMMAND (10 h ) The WRITE FILEMARKS command directs the tape drive to write the specified number of Filemarks beginning at the current logical position on tape. If the Immediate bit is not set, any data or Filemarks in the WRITE cache buffer are written to tape. Bit Byte 7 6543 [...]

SCSI Commands 5- 174 Quantum DLT 7000 Tape System WRITE FILEMARKS Command (10h) (continued) The WRITE FILEMARKS command may be used to force the tape drive to write any buffered WRITE data to the tape medium. If the tape drive is in buffered mode, and WRITE FILEMARKS is received, the requested filemarks are appended to the data and the WRITE buffer[...]

Quantum DLT 7000 Tape System A- 1 Appendix A DEFINITION OF VENDOR UNIQUE SENSE DATA INFORMATION This appendix lists the internal status codes with their descriptions. The internal status code is located at byte offset 18 of the REQUEST SENSE data and may be available for certain types of failures. NOTE Byte 18 of the REQUEST SENSE data has two form[...]

Appendix A: Definition of Vendor Unique Sense Data Information A- 2 Quantum DLT 7000 Tape System Table A– 1 Internal Status Codes (continued) Decimal Hexadecimal Description 11 0B Gap Within Object (Missing Block in Record) 12 0C Record on Tape Larger Than Requested 13 0D Compare Error 14 0E Successive Blocks Missing Across Objects 15 0F Drive St[...]

Appendix A: Definition of Vendor Unique Sense Data Information Quantum DLT 7000 Tape System A- 3 Table A– 1 Internal Status Codes (continued) Decimal Hexadecimal Description 35 23 EDC Error Found by “FEZ” ASIC – FECC RAM OK 36 24 Timeout on Command to Medium Changer 37 25 Medium Changer UART Error (Overrun) 38 26 Medium Changer Response Len[...]

Appendix A: Definition of Vendor Unique Sense Data Information A- 4 Quantum DLT 7000 Tape System Bit 7 Bit 6 (Rsv’d) Bit 5 (Rsv’d) Bit 4 (Rsv’d) Bit 3 (Rsv’d) Bit 2 Bit 1 Bit 0 Figure A-1 Internal Status Bits Table A–2 Internal Status Bit Flags Bit No. Description 0 If set to 1, Cleaning Light is Illuminated, otherwise Light is off. 1 - 2[...]

Quantum DLT 7000 Tape System B- 1 Appendix B EEPROM-RESIDENT BUGCHECK AND EVENT LOGS This appendix provides an explanation of the event logs (information packets) stored in semi- permanent, non-volatile memory of the tape drive. These packets can be retrieved via the SCSI LOG SENSE command with Page Code 07h. B.1 EEPROM PACKETS (LAST N EVENTS) The [...]

Appendix B: EEPROM-Resident Bugcheck and Event Logs B- 2 Quantum DLT 7000 Tape System B.2 BUGCHECK PACKETS Bugchecks are the result of some software-detected errors. For example, a hardware failure or an internal system consistency failure may cause a bugcheck. These events cause bugcheck packets to be written to EEPROM. The most important informat[...]

Appendix B: EEPROM-Resident Bugcheck and Event Logs Quantum DLT 7000 Tape System B- 3 B.2.2 Event Log Packets Event log packets are non-fatal and can occur to log information about significant events. Refer to Table B-2 for a listing of the existing error codes that are found within event log packets. Note that these logs are informational only. Ta[...]

Appendix B: EEPROM-Resident Bugcheck and Event Logs B- 4 Quantum DLT 7000 Tape System B.2.3 Directory Failure Event Log Packets Directory failure event logs are written when a directory read or directory write request fails for any reason. Table B-3 provides the description of important fields within the packet. Note that the byte count begins at B[...]

Quantum DLT 7000 Tape System C- 1 Appendix C UPDATING THE FIRMWARE This chapter explains how to update the tape drive’s PCBA-resident firmware. C.1 OVERVIEW Using the tape drive’s front panel and a tape with the updated firmware image, you can update the tape drive’s PCBA-resident firmware. CAUTION If a powerfail occurs during the firmware up[...]

Appendix C: Updating the Firmware C- 2 Quantum DLT 7000 Tape System NOTES On UN*X systems, use the FTP utility to transfer the binary firmware image. Be sure to specify “type image” before using the “get” or “put” commands, otherwise extra characters may be added to the file, causing it to be invalid. The image file should be exactly 12[...]

Appendix C: Updating the Firmware Quantum DLT 7000 Tape System C- 3 NOTE If the WRITE PROTECT indicator does not blink, check that: 1. The Power-On Self Test passed. 2. The drive is unloaded. 3. The drive handle is in its down position. c) Release the UNLOAD button, then press the UNLOAD button again within four (4) seconds. The second press should[...]

Appendix C: Updating the Firmware C- 4 Quantum DLT 7000 Tape System If the firmware image is valid, the tape drive’s PCBA controller’s FLASH EEPROM is updated with the new firmware image. The WRITE PROTECT and TAPE IN USE indicators flash again during the controller firmware update. C.4 INTERPRETING T HE RESULTS OF A FIRMWARE UPDATE Following a[...]

Appendix C: Updating the Firmware Quantum DLT 7000 Tape System C- 5 Table C-2 Results of Firmware Update If... Then... The image is valid 1. The FLASH EEPROM containing the current firmware is erased. 2. The new image is programmed into FLASH EEPROM (approximately 2 minutes). Then: The tape drive resets The tape drive runs POST The tape drive unloa[...]

Appendix C: Updating the Firmware C- 6 Quantum DLT 7000 Tape System[...]

Quantum DLT 7000 Tape Drive D- 1 Appendix D THE TAPE CARTRIDGE This appendix covers: • Tape Cartridge Handling Guidelines (subsection D.1) • Tape Cartridge Inspection Procedure (subsection D.2) • Tape Cartridge Write-Protect Switch (subsection D.3) • Loading a Tape Cartridge (subsection D.4) • Unloading a Tape Cartridge (subsection D.5) ?[...]

Appendix D: The Tape Cartridge D- 2 Quantum DLT 7000 Tape Drive • Always observe the proper environmental conditions for the storage of tape cartridges. Refer to the cartridge reference card supplied with each cartridge. The ambient operating environment for the tape cartridge is: Temperature 10 ° C to 40 ° C (50 ° F to 104 ° F) Relative Humi[...]

Appendix D: The Tape Cartridge Quantum DLT 7000 Tape Drive D- 3 • Do not expose the tape cartridge to moisture or direct sunlight. • Do not insert any cartridge that has been dropped into the DLTtape drive without at least a thorough visual inspection as described in this paper. A dropped cartridge may have dislodged, loosened, or damaged inter[...]

Appendix D: The Tape Cartridge D- 4 Quantum DLT 7000 Tape Drive D.2 TAPE CARTRIDGE INSPECTION PROCEDURE Ensure that your tape backup solution performs reliably by following the Visual Mechanical Inspection (VMI) procedures described in this subsection. These steps will help you identify any potential tape cartridge problems, and will prevent accide[...]

Appendix D: The Tape Cartridge Quantum DLT 7000 Tape Drive D- 5 5. Look at the bottom of the tape cartridge, holding it as shown in Figure D-2. Figure D-2 Location of Reel Lock Opening and Spring-Loaded Hub on Bottom of DLTtape Cartridge Check the opening indicated in Figure D-2 and ensure that the small plastic tab is partially visible. This is th[...]

Appendix D: The Tape Cartridge D- 6 Quantum DLT 7000 Tape Drive 6. Ensure that the tape leader within the tape cartridge is in the correct position. To do this, you must open the tape cartridge door. Refer to Figure D-3. Figure D-3 Opening the Door on a DLTtape Cartridge Showing Tape Leader Loop in its Correct Position Open the door by holding the [...]

Appendix D: The Tape Cartridge Quantum DLT 7000 Tape Drive D- 7 7. Figure D-4 shows three different tape cartridge loop problems. No tape cartridge that exhibits the problems shown in the examples in Figure D-4 should be used in a DLT tape system. Example 1: “Swallowed” Tape Cartridge Leader Example 2: Torn or Broken Leader Loop Example 3: Tape[...]

Appendix D: The Tape Cartridge D- 8 Quantum DLT 7000 Tape Drive 8. Finally, check for proper operation of the tape cartridge’s write-protect switch (Figure D-5). This sliding switch, located on the end of the tape cartridge used for the tape label, should snap smartly back and forth, and the orange tab should be visible when the tape cartridge is[...]

Appendix D: The Tape Cartridge Quantum DLT 7000 Tape Drive D- 9 • Move the write-protect switch to the right to disable write protection (existing data on the tape can be overwritten, and/or additional data can be appended to the media unless the cartridge is write-protected via software). When write-protect is disabled, no orange rectangle is vi[...]

Appendix D: The Tape Cartridge D- 10 Quantum DLT 7000 Tape Drive D.4 LOADING A TAPE CARTRIDGE Complete this subsection to load a tape cartridge into the front panel (Chapter 2, Figure 2-10) of the tape drive. Because this subsection of the manual refers to some of the front panel LEDs and controls, it may be useful to review information in chapter [...]

Appendix D: The Tape Cartridge Quantum DLT 7000 Tape Drive D- 11 D.5 UNLOADING A TAPE CARTRIDGE Complete this subsection to unload a tape cartridge. Because this subsection of the manual refers to some of the front panel LEDs and controls (Chapter 2, Figure 2-10) of the tape drive. Because this subsection of the manual refers to some of the front p[...]

Appendix D: The Tape Cartridge D- 12 Quantum DLT 7000 Tape Drive D.6 USING A CLEANING TAPE CARTRIDGE This subsection contains information on how and when to use a cleaning tape cartridge. Because this subsection of the manual refers to some of the front panel LEDs and controls (Chapter 2, Figure 2-10) of the tape drive. Because this subsection of t[...]

Quantum DLT 7000 Tape Drive Index- 1 Index A ASC/ASCQ codes, REQUEST SENSE, 5-157 SEND DIAGNOSTIC, 5-171 ABORT message, 4-5 Acoustic noise emissions, 1-10 Altitude specification, 1-5 ATTENTION condition, 3-24 B Beeper, 2-16, 2-20 Bugcheck packets, B-2 BUS DEVICE RESET message, 4-5 BUS FREE, 3-10 BUS PARITY ERRORS, 3-11 Bus termination, 2-6, 2-14, 2[...]

Index Index- 2 Quan tum DLT 7000 Tape Drive E EEPROM Event log error codes, B-3 Packets (last n error events), B-1 Resident bugcheck packets, B-2 Vendor Unique Page Parameters, 5-95 Electromagnetic emissions, 1-12 EMI regulations and certifications, 1-12 Environmental specifications, 1-5 ERASE command, 5-15 ESD protection, 2-3 F Firmware update, cr[...]

Index Quantum DLT 7000 Tape Drive Index- 3 N Non-operating shock, 1-5 Non-operating vibration, 1-6 NO OPERATION message, 4-11 O Operation codes, 5-1 P Parity checking rackmount, 2-6 tabletop, 2-13 Performance data, 1-4 Physical specifications, 1-3 Pin assignments loader, 2-12 power, 2-12 SCSI differential, 2-11 SCSI single-ended, 2-10 POST descript[...]

Index Index- 4 Quan tum DLT 7000 Tape Drive ERASE (19h), 5-15 INQUIRY (12h), 5-17 LOAD UNLOAD (1Bh), 5-29 LOCATE (2Bh), 5-33 LOG SELECT (4Ch), 5-35 LOG SENSE (4Dh), 5-43 MODE SELECT (15h/55h), 5-69 MODE SENSE (1Ah/5Ah), 5-105 PREVENT/ALLOW MEDIUM REMOVAL (1Eh), 5-131 READ (08h), 5-133 READ BLOCK LIMITS (05h), 5-137 READ BUFFER (3Ch), 5-139 READ POS[...]

Index Quantum DLT 7000 Tape Drive Index- 5 U Unit attention condition, 5-10 Unloading a cartridge, D-11 Updating firmware, C-1 V Vendor unique page parameters for EEPROM, 5-95 Vendor unique sense data request sense status codes, A-1 VERIFY command, 5-177 Vibration requirements non-operating, 1-7 operating, 1-6 W WRITE BUFFER command, 5-181 WRITE co[...]

Index Index- 6 Quan tum DLT 7000 Tape Drive[...]

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*81-60000-06 A012 81-60000-06 A02 501 Sycamore Drive Milpi tas, CA 95035 (408) 894-4000 www.quantum.c om Nove mber 10, 2003 81-60000-06 A02[...]