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Maxtor 1925 manual

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Table of contents for the manual

  • Page 1

    Quickview 40 20/30/40GB AT Product Manual May 24, 2005 Part Number: 000001925[...]

  • Page 2

    Ma y 24, 2005 Maxtor Cor poration. All r ights reserv ed. Pr inted in U .S .A.This pub lication could include technical inaccura cies or typographic al er r ors. Changes are per iodically made to the infor m ation herein – which will be incor p orated in r evised editions of th e publ ication. Maxtor ma y mak e changes or impr o v ements in the p[...]

  • Page 3

    Maxtor reserves the r ight to make changes and impr o v eme nts to its pr oducts, without incur r ing an y obliga- tion to incor porate such changes or impr o v em ents into units pr eviously sold or shipped. This pr oduct or document is protected b y cop yr ight an d distr ibuted under licences restr icting it s use , cop y- ing, distr ibuting, an[...]

  • Page 4

    Please do not remo ve or co v er up Maxtor factor y-in sta lled dr iv e labels . The y contain in for mation required should the dr iv e ev er need r epair .Thank y ou for y o ur inter est in Maxtor hard disk dr i v es. This manual pr o- vides technical infor mation for OEM engineer s and systems integ rators re garding the instal lation and use of[...]

  • Page 5

    Quickview 40 20/30/40GB AT i Table of Content Chapter 1 INTRODUCTION 1.1 MAXTOR CORPORATION ............ ............................. ........................ 1-1 1.2 AUDIENCE ...................... ........................ ............................. .......... 1-1 1.3 MANUAL ORGANIZATION............. ........................ ..................[...]

  • Page 6

    Table of Contents ii Quickview 40 20/30/40GB AT Chapter 4 INSTALLATION 4.1 SPACE REQUIREMENTS...................................... ............................. 4-1 4.2 UNPACKING INSTRUCTIONS ...................... ............................. ......... 4-2 4.3 HARDWARE OPTIONS ................................... ......................... .......[...]

  • Page 7

    Table of Contents Quickview 40 20/30/40GB AT iii Chapter 6 SERVICE AND SUPPORT 6.1 PRODUCT SUPPORT/TECHNICAL AS SISTANCE/CUSTOMER SERVICE . 6 - 1 Glossary .................... ............................. ........................ .......................G-1[...]

  • Page 8

    Quickview 40 20/30/40GB AT iii List of Figures Figure 4-1 Mechanical Dimensions...................... ............................. ........4-1 Figure 4-2 Single- Pack Shipping Container ........................................ ...... 4-3 Figure 4-3 25- Pack Shipping Container ........................................ ........... 4-4 Figure 4-4 Jump[...]

  • Page 9

    Quickview 40 20/30/40GB AT iv List of Tables Table 4-1 AT Jumper Option........................ ........................ .........................4-6 Table 4-2 J1 Power Connector, Sectio n A........ ............................. .................4-12 Table 4-3 Logical Addressing Form................... ......................... ....................[...]

  • Page 10

    Quickview 40 20/30/40GB AT 1-1 Chapter 1 Introduction 1.1 Maxtor Corporation Maxtor corporation is one of the world’s largest su ppliers of hard disk drive products-products that help store the digital world for millions of users. Maxtor products serve a range of markets, including personal and entertainment, small office/home office, mid-sized b[...]

  • Page 11

    Introduction 1-2 Quickview 40 20/30/40GB AT 1.3 MANUAL ORGANIZATION This manual is organized in to the following chapters: • Chapter 1 – Introduction • Chapter 2 – Product Description • Chapter 3 – Product Specifications • Chapter 4 – Installation • Chapter 5 – ATA Bus Interface and ATA Commands • Chapter 6 – Service and Sup[...]

  • Page 12

    Introduction Quickview 40 20/30/40GB AT 1-3 • MB/s megabytes per second • MHz megahertz • ms milliseconds • MSB most significant bit • mV millivolts • ns nanoseconds • tpi tracks per inch • µs microseconds •V v o l t s The typographical and naming conventions us ed in this manual are listed below. Conventions that are unique to a[...]

  • Page 13

    Introduction 1-4 Quickview 40 20/30/40GB AT 1.5 REFERENCE For additional informat ion about the ATA interfac e, refer to the late st revision of the draft standard on th e internet at http://www.t13/ using the link under “1410DAT Attachment - 6 with Packet Interface (ATA/ATAPI - 6).”[...]

  • Page 14

    Quickview 40 20/30/40GB AT 2-1 Chapter 2 PRODUCT DESCRIPTION 2.1 PRODUCT DESCRIPTION Maxtor’s Quickv iew 40 PATA hard disk dr ives are part of a family of high performance, 1-inch -high hard disk drives manufactured to meet the highest product quality standards . These hard disk drives are non-removable, 3 1/2-inch hard disks and are ava ilable w[...]

  • Page 15

    General Description 2-2 Quickview 40 20/30/40GB AT Performance • 10.0 ms seek time (Inc reased in Quiet Mod e) • Average rotational latency of 4.17ms • New Ultra ATA interface with Maxt or-patented Ultra ATA/133 protocol supporting burst data transfer rates of 133MB/s. • 2 M B b u f f e r w i t h 1 . 9 M B ( a p p r o x i m a te) Advance Ca[...]

  • Page 16

    General Description Quickview 40 20/30/40GB AT 2-3 2.2 REGULATORY COMPLIANCE STANDARDS Maxtor Corpor ation’s disk driv e products meet a ll domestic and i nternational product safety regulatory co mpliance requirements. Maxtor’s di sk drive products conform to the following specifically mark ed Product Safety Standards: • Underwriters Laborat[...]

  • Page 17

    Quickview 40 20/3 0/40GB AT 3-1 Chapter 3 PRODUCT SPECIFICATIONS 3.1 Models and Capacities 3.2 Drive Configuration MODELS NUMBERS RoHS Compliant 6K020L0 6K030L0 6K040L0 Formatted Capacity (GB LBA Mode) 20GB 30GB 40GB GB means 1 billion bytes. Total accessible capacity varies depending on operating environment. * Complies with Europ ean Union Direct[...]

  • Page 18

    Product Specifications 3-2 Quickview 40 20/30/40GB AT Recording Density (kbpi, ID/OD) ID = 446/613/713 OD = 338/476/560 Track Density (ktp i) 75.9/75.9/88.7 MODELS 20GB 30GB 40GB[...]

  • Page 19

    Product Specifications Quickview 40 20/3 0/40GB AT 3-3 3.3 Performance Specifications 3.4 Physical Dimensions MODELS 20GB 30GB 40GB Seek Times (typical read, ms) Track-to-Track 0.8 Average (normal seek) ≤ 10.0 Full Stroke (normal seek) ≤ 18.0 Average Latency (ms) 4.17 Controller Overhead (ms) <0.3 Rotation Sp eed (RPM ±0.1%) 7200 Data Trans[...]

  • Page 20

    Product Specifications 3-4 Quickview 40 20/30/40GB AT 3.5 Power Requirements 3.6 Power Mode Definitions Spin-up The drive is spinning up following in itial applicatio n of power and has not yet reached full speed. Seek A random access operation by the drive. Read/Write Data is being read from or written to the drive. Idle The drive is spinning, the[...]

  • Page 21

    Product Specifications Quickview 40 20/3 0/40GB AT 3-5 3.8 Environmental Li mits Notes: 1. Margin Demonstrated implies the product will operate at the stated conditions with an acceptable impact to the ARR specification for any OEM requiring those values in their purchase specification. 2. The testing performed by Maxtor is consistent with ISO 7779[...]

  • Page 22

    Product Specifications 3-6 Quickview 40 20/30/40GB AT 3.9 Shock and Vibration PARAMETER OPERATING NON-OPERATING Mechanical Shock R=0.9 88/shock at 60 Gs; R= 0.999/shock at 30 Gs 1 msec, 1/2 sine R=0.90@>= 300G 1 di sk R=0.95@>= 250G, 1 disk R=0.99@>= 200G, 1 disk Rotational Shock R=0.988 @ 2000 rad/sec 2 R=0. 95 @ 20K rad/sec 2 , 0.5ms to [...]

  • Page 23

    Product Specifications Quickview 40 20/3 0/40GB AT 3-7 3.10 Reliability Specifications Annualized Return Rate <1.0% Annualized Return Rate (ARR) indicates the average against products shipped. ARR includes all reason s for returns (failures, handling, damage, NDF) but do es not include inventory credit returns. Load/Unload Cycles 100,000 This in[...]

  • Page 24

    Product Specifications 3-8 Quickview 40 20/30/40GB AT 3.11.2 Canadian Emissions Statement This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian department of comm unications. Le present appareil numerique n'emet pas de b ruit r[...]

  • Page 25

    Product Specifications Quickview 40 20/3 0/40GB AT 3-9[...]

  • Page 26

    Quickview 40 20/3 0/40GB AT 4-1 Chapter 4 INSTALLATION This chapter explains how to unpack, configure, mount, and connect the Maxtor Quickview 40 20/30/40GB AT hard disk drive prior to operation. It also explains how to st art up and op er ate the drive. 4.1 SPACE REQUIREMENTS The Maxtor Quickview 40 hard disk drives are shipped without a faceplate[...]

  • Page 27

    Installation 4-2 Quickview 40 20/30/40GB AT 4.2 UNPACKING INSTRUCTIONS 1. Open the shipping container and remove the packing assembly that contains the drive. 2. Remove the drive from the packing assembly. 3. When you are ready to install the drive, remove it from the ESD bag. CAUTION: The maximum limits for physical shock can be exceeded if the dr[...]

  • Page 28

    Installation Quickview 40 20/3 0/40GB AT 4-3 Figure 4-2 shows the packing assembly for a single Maxtor Quickview 40 hard disk drive. A 20 and 25-pack shipping container is available for multiple drive shipments. Figure 4-2 Single-Pack Shipping Container[...]

  • Page 29

    Installation 4-4 Quickview 40 20/30/40GB AT Figure 4-3 25-Pack Shipping Container 4.3 HARDWARE OPTIONS The configuration of a Maxtor Quickview 40 2 0/30/40GB AT hard disk drive depends on the host system in wh ich it is to be installed. This section describes the hardware option s that you must take into account prior to installation.[...]

  • Page 30

    Installation Quickview 40 20/3 0/40GB AT 4-5 Figure 4-4 Jumper Locations on the Interface Connector The configuration of the following Th ree jumpers controls the drive’s five modes of operat ion: • CS – Cable Select • DS – Drive Select • PK– Jumper Parking Position (Slave mode) • AC– Alternate Capacity The AT PCB has two jumper l[...]

  • Page 31

    Installation 4-6 Quickview 40 20/30/40GB AT Table 4-1 AT Jumper Options Note: In Table 4-1, a 0 indicates that the jumper is removed, a 1 indicates that the jumper is installed, and an X indi- cates that the jumper setting does not matter. 4.3.1 Cable Select (CS) Jumper When a Maxtor Quickview 40 20/30/40GB AT hard disk drive and another ATA hard d[...]

  • Page 32

    Installation Quickview 40 20/3 0/40GB AT 4-7 CS position may be stored on the PK jum per pins. 4.3.2 Drive Select (DS) Jumper You can also daisy-chain two drives on the ATA bus interface by using their Drive Select (DS) jumpers. To use the DS feature, the CS jumper must not be installed. To configure a drive as the Master (D evice 0), a jumper must[...]

  • Page 33

    Installation 4-8 Quickview 40 20/30/40GB AT 4.3.5 Alternate Capacity (AC) For user capacities below 66,055,2 48 sectors (32GB), inserting the AC jumper limits the Number of Cylinders field 1 to a value of 16,383, as reported in IDENTIFY DEV ICE data wo rd. This allows software drivers to determine that the actual capacity is larger than indicated b[...]

  • Page 34

    Installation Quickview 40 20/3 0/40GB AT 4-9 CAUTION: The PCB is very close to the mount ing holes. Do not exceed the specified penetration for the mounting screws. The specified screw penetration allows full use of the mounting hole threads, while avoiding damaging or placing unwanted stre ss on the PCB. Figure 4-7 specifies the mini- mum clearanc[...]

  • Page 35

    Installation 4-10 Quickview 40 20/30/40GB AT 4.4.1 Orientation The mounting holes on th e Maxtor Quickview 40 20/30/40GB AT hard disk drives allow the drive to be mounted in any orientation. Figure 4-6 show the location of the three mounting holes on each side of the drive. The drive can also be mounted using th e four mounting hole locations on th[...]

  • Page 36

    Installation Quickview 40 20 /30/40GB AT 4-11 4.4.2 Ventilation The Maxtor Quickview 40 20/30/40GB AT hard disk drives operate without a cooling fan, provided the ambient air temperature does not exceed 131×F (55×C) at any point along the drive form factor envelope. 4.5 COMBINATION CONNECTOR (J1) J1 is a three-in-one combination connector. The dr[...]

  • Page 37

    Installation 4-12 Quickview 40 20/30/40GB AT 4.5.1 DC Power (J1, Section A) The recommended mating connector s for the +5 VDC and +12 VDC input power are listed in Table 4-2. Table 4-2 J1 Power Connector, Section A Note: Labels indicate the pin numbers on the connector. Pins 2 and 3 of section A are the +5 and +12 volt returns and are connected tog[...]

  • Page 38

    Installation Quickview 40 20 /30/40GB AT 4-13 connector on the motherboard. To connect the drive to the motherboard, use a 40 conductor ribbon cable (80 conductor ribbon cab le if using Ultra ATA/66/100 or /133 drive) 18 inches in length or shorter. Ensure that pin 1 of the drive is connected to pin 1 of th e motherboard connector. 4.7 FOR SYSTEMS [...]

  • Page 39

    Installation 4-14 Quickview 40 20/30/40GB AT 4.7.1.1 Connecting the Adap ter Board and the Drive Use a 40-pin ribbon cable to connect the drive to the board. See Figure 4-8. To connect the drive to the board: 1. Insert the 40-pin cable connector into the m ating connector of the adapter board. Make sure that pin 1 of the connector matches with pin [...]

  • Page 40

    Installation Quickview 40 20 /30/40GB AT 4-15 Figure 4-10 Completing the Drive Installation 4.8 TECHNIQUES IN DRIVE CONFIGURATION 4.8.1 The 528-Megabytes Barrier Older BIOS that only support Int 13 commands for accessing ATA drives through DOS based operating systems will be limited to use only 1024 cylinders. This will reduce the effective capacit[...]

  • Page 41

    Installation 4-16 Quickview 40 20/30/40GB AT • Use a third party software prog ram that translates the hard drive parameters to an accepta ble configuration for MS-DOS. • Use a hard disk controller th at translates the hard drive parameters to an appropriate setup for both MS-DOS and the computer system’s ROM-BIOS. • Insert the Alternate Ca[...]

  • Page 42

    Installation Quickview 40 20 /30/40GB AT 4-17 4.9 SYSTEM STARTUP AND OPERATION Once you have installed the Maxtor Quickview 40 20/30/40GB AT hard disk drive, and adapter board (if required) in the h ost system, you are ready to partition and format the driv e for operation. To set up the drive correctly, follow these steps: 1. Power on the system. [...]

  • Page 43

    Installation 4-18 Quickview 40 20/30/40GB AT To match the logical specifications of the drive to the drive type of a particular BIOS, consult the system ’s drive-type table. This table specifies the number of cylinders, head s, and sectors for a particu lar drive type. You must choose a drive type that meets the following requirements for the 20,[...]

  • Page 44

    Quickview 40 20/30/40 GB AT 5-1 Chapter 5 ATA BUS INTERFACE AND ATA COMMANDS This chapter describes the interface between Quickview 40 hard disk drives and the ATA bus. The commands that are issued from the host to control the drive are listed, as well as the electrical and mechanic al characteristics of the interface. 5.1 INTRODUCTION Maxtor Quick[...]

  • Page 45

    ATA Bus Interface and ATA Commands 5-2 Quickview 40 20/30/40GB AT 5.4 REGISTER A DDRESS DECODING The Maxtor Quickview 40 hard disk driv es a llow their host systems to address the full set of command and control registers as specified in clause 7 of the ATA/ATAPI-6 standard. 5.5 COMMAND INTERFACE 5.5.1 General Feature Set The µProcessor, Disk Cont[...]

  • Page 46

    ATA Bus Interface and AT A Commands Quickview 40 20/30/40 GB AT 5-3 READ BUFFER E4h READ DMA C8h, C9h READ LONG 22h, 23h READ MULTIPLE C4h READ NATIVE MAX ADDRESS F8h READ SECTOR(S) 20h, 21h READ VERIFY SECTOR(S) 40h, 41h SECURITY DISABLE PASSWORD F6h SECURITY ERASE PREPARE F3h SECURITY ERASE UNIT F4h SECURITY FREEZE LOCK F5H SECURITY SET PASSWORD [...]

  • Page 47

    ATA Bus Interface and ATA Commands 5-4 Quickview 40 20/30/40GB AT Note: 1. As defined in the ATA/ATAPI-6 standard. SMART EXECUTE OFF-LINE IMMEDIATE B0h D4h SMART READ DATA B0h D0h SMART READ LOG B0h D5h SMART RETURN STATUS B0h DAh SMART SAVE ATTRIBUTE VALUES B0h D3h SMART WRITE LOG B0h D6h STANDBY 96h, E2h STANDBY IMMEDIATE 94h, E0h WRITE BUFFER E8[...]

  • Page 48

    ATA Bus Interface and AT A Commands Quickview 40 20/30/40 GB AT 5-5 Identify Drive Command This command allows the host to receiv e parameter information from the drive. When the command is received, the drive: 1. Sets BSY 2. Stores the required parameter information in th e sector buffer 3. Sets the DRQ bit 4. Generates an interrupt The host may t[...]

  • Page 49

    ATA Bus Interface and ATA Commands 5-6 Quickview 40 20/30/40GB AT 20-21 Retired 22 Obsolete 23-26 Firmware revision (8 ASCII characters) 27-46 Model number (40 ASCII characters) 47 15-8: 80h 7-0: 00h = Reserved 01h-FFh: = Maximum number of sectors that shall be transf erred per interrupt on READ/WRITE MULTIPLE commands 48 Reserved 49 Capabilities 1[...]

  • Page 50

    ATA Bus Interface and AT A Commands Quickview 40 20/30/40 GB AT 5-7 53 15-3: Reserved 2: 1 = the fiel ds reported in word 88 are valid. 0 = the fie lds reported in word 88 are not vali d 1: 1 = the fie lds reported in words (70:64) are valid. 0 = the fie lds reported in words (70:64) are not valid 0: Obsolete 54-58 Obsolete 59 15-9: Reserved 8: 1 =[...]

  • Page 51

    ATA Bus Interface and ATA Commands 5-8 Quickview 40 20/30/40GB AT 67 Minimum PIO transfer cycle time without flow control 15-0: Cycle time in nanoseconds 68 Minimum PIO transfer cycle time with IORDY flow control 15-0: Cycle time in nanoseconds 69-70 Reserved (for future command overlap and queuing) 71-74 Reserved for IDENTI FY PACKET D EVICE comma[...]

  • Page 52

    ATA Bus Interface and AT A Commands Quickview 40 20/30/40 GB AT 5-9 81 Minor version number 0000h or FFFFh = device does not report version. 0001h-FFFEh = see 6.16.41 of ATA/ATAPI-7 specification 82 Command set supported. 15: Obsolete 14: 1 = NOP command supported 13: 1 = READ BUFFER command supported 12: 1 = WRITE B UFFER command supported 11: Obs[...]

  • Page 53

    ATA Bus Interface and ATA Commands 5-10 Quickview 40 20/30/40GB AT 83 7: See Address Offset Reserv ed Area Boot, INCITS TR27:2001 6: 1 = SET FEATURES s ubcommand required to spinup after power-up 5: 1 = Power-Up In Standb y feature set supported 4: 1 = Removable Media Status No tification feature set supported 3: 1 = Advanced Power Management featu[...]

  • Page 54

    ATA Bus Interface and AT A Commands Quickview 40 20/30/40 GB AT 5-11 85 7: 1 = release interrupt enabl ed 6: 1 = look-ahead enabled 5: 1 = write cache enabled 4: Shall be cleared to zero to indicate that the PACKET Command feature set is not supported . 3: 1 = Power Management feature set enabled 2: 1 = Removable Media feature set enabled 1: 1 = Se[...]

  • Page 55

    ATA Bus Interface and ATA Commands 5-12 Quickview 40 20/30/40GB AT 87 6: 1 = WRITE DMA FUA EXT and WRITE MULTIPLE FUA EXT commands supported 5: General Purpose Loggin g feature set supported 4: 1 = Valid CONFIGURE STREAM command has been executed 3: 1 = Media Card Pass Through Command feature set enabled 2: 1 = Media serial number is valid 1: 1 = S[...]

  • Page 56

    ATA Bus Interface and AT A Commands Quickview 40 20/30/40 GB AT 5-13 93 Hardware reset result. The contents of bits (12:0) of this word shall change o nly during the execution of a hardware reset 15: Shall be cleared to zero. 14: Shall be set to one. 13: 1 = device detected CBLID- above ViH. 0 = device detected CBLID- below ViL 12-8: Device 1 hardw[...]

  • Page 57

    ATA Bus Interface and ATA Commands 5-14 Quickview 40 20/30/40GB AT 94 15-8: Vendor’s recommend ed acoustic management value. 7-0: Current automatic aco ustic manage ment value 95 Stream Minimum Request Size 96 Stre am Transfer Time - DMA 97 Stream Access Latency - DMA 98-99 Streaming Performance Granularity 100-103 Maximum user LBA for 48-bit Add[...]

  • Page 58

    ATA Bus Interface and AT A Commands Quickview 40 20/30/40 GB AT 5-15 128 Security status 15-9: Reserved 8: Security level 0 = High, 1 = Maximum 7-6: Reserved 5: 1 = Enhanced security erase supported 4: 1 = Security count expired 3: 1 = Security frozen 2: 1 = Security locked 1: 1 = Security enabled 0: 1 = Security supported 129-159 Vendor specific 1[...]

  • Page 59

    Quickview 40 20/30/40 GB AT 6-1 Chapter 6 SERVICE AND SUPPORT 6.1 Product Support/Technical A ssistance/Customer Service For Product Service and Support Info rmation please visit our site at: www.maxtor.co m for warranty service or www.maxt orkb.com for technical support. .[...]

  • Page 60

    Quickview 40 20/30/40GB AT G-1 GLOSSARY A ACCESS – (v) Read, write, or update information on some storage medium , such as a disk. (n) One of these operations. ACCESS TIME – The interval between the time a request for data is made by the system and the time the data is available from the drive. Access time includes the actual seek time, rotatio[...]

  • Page 61

    Glossary G-2 Quickview 40 20 /30/40GB AT decimal digit, which may have a value from 0 to 9. A bit is one of the logic 1or logic 0 binary settings that make up a byte of data. See also byte. BLOCK – A sector or group of sectors. By default, a block of data consists of 512 bytes. BPI – Abbreviation for bits per inch . A measure of how densely inf[...]

  • Page 62

    Glossary Quickview 40 20/30/40GB AT G-3 term data integrity. Defect management eliminates th e need for user defect maps. This is accomplished by scanning the disk drives at the factory for defective sectors. Defective sectors are deallocated prior to shipment. In addition, during regular use, the drive continues to scan and compensate for any new [...]

  • Page 63

    Glossary G-4 Quickview 40 20 /30/40GB AT changes per inch (FCI), with typical values in the thousands. FLYING HEIGHT – The distance between the read/write head and the disk surface caused by a cushion of air that keeps the head from contacting the media. Smaller flying heights permit more dense storage o f data, but require more precise mechanica[...]

  • Page 64

    Glossary Quickview 40 20/30/40GB AT G-5 of the disk controller and disk drive, that manages the exchange of data between the drive and computer. INTERLEAVE – The arrangement of sectors on a track. A 1:1 interleave arranges the sectors so that the next sector arrives at the read/write heads just as the computer is ready to access it. See also inte[...]

  • Page 65

    Glossary G-6 Quickview 40 20 /30/40GB AT M MB – See megabyte. MEDIA – The magnetic film that is deposited or coated on an aluminum substrate which is very flat and in the shape of a disk. The media is overcoated with a lubricant to prevent damage to the heads or media during head take off and landing. The media is where the data is stored insid[...]

  • Page 66

    Glossary Quickview 40 20/30/40GB AT G-7 covered with a hard metal alloy instead of an iron-oxide compound. Plated disks can store greater amounts of d ata in the same area as a coated disk. PLATTER – An disk made of metal (or other rigid material) that is mounted inside a fixed disk drive. Most drives use more than one platter mounted on a single[...]

  • Page 67

    Glossary G-8 Quickview 40 20 /30/40GB AT S SCSI – Acronym for Small Computer System Interface , an American National Standards Institute (ANSI) version of Shugart Associates' SASI interface between the computer and controller. SCSI has gr own in popularity and is one of the most flexible and intelligent interfaces available. SECTOR – A sec[...]

  • Page 68

    Glossary Quickview 40 20/30/40GB AT G-9 TRACK DENSITY – How closely the tracks are packed on a disk surface. The number is specified as tracks per inch (TPI). TRACK TO TRACK SEEK TIME – The time required for the read/write heads to move to an adjacent track. TRANSFER RATE – The rate at which the disk sends and receives data from the controlle[...]

  • Page 69

    Quickview 40 20/3 0/40GB AT I-1 INDEX A abbreviations 1-1 adapter board 2-3, 4-13 C cable select 4-6 cable select (CS) jumper 4-6 clearance 4-10 command descriptions 5-2 connector, IDE 4-11 D daisy-chain 2-2 daisy-chained 4-6 drive select (DS) jumper 4-7 F faceplate 4-1 H hardware options 4-5 hardware requirements, 2-3 I IDE 2-4, 4-8 IDE-bus interf[...]