Maxtor D740X-6L 20.0 AT Product Manual
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Maxtor D740X-6L 20.0 AT Product Manual

Hard disk drives
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Summary of Contents for Maxtor D740X-6L 20.0 AT

  • Page 1 / C Z V Q T &    :  .                    ) $ # 6 2 T Q F W E V / C P W C N 5 G R V G O D G T                ...
  • Page 2 © September 19, 2001 Maxtor Corporation. All rights reserved. Printed in U.S.A. This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein – which will be incorporated in revised editions of the publication. Maxtor may make changes or improvements in the product(s) described in this publication at any time and without notice.
  • Page 3 This product or document is protected by copyright and distributed under licences restricting its use, copy- ing, distributing, and decompilation. No part of this product or document may be reproduced in any form by any means without prior written authorization of Maxtor and its licensors, if any. RESTRICTED RIGHTS LEGEND: Use, duplication, or disclosure by the government is subject to restrictions as set forth in subparagraphs (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013 and FAR 52.227-19.
  • Page 4 $ G H Q T G ; Q W $ G I K P Thank you for your interest in Maxtor hard disk drives. This manual provides technical information for OEM engineers and systems integrators regarding the installation and use of Maxtor hard drives. Drive repair should be performed only at an authorized repair center.

  • Page 5: Table Of Contents

    6 C D N G Q H % Q P V G P V % J C R V G T  # $ 1 7 6 6 * + 5 / # 0 7 # . 1.1 AUDIENCE ......................1-1 1.2 MANUAL ORGANIZATION................
  • Page 6 Table of Contents 3.8 FOR SYSTEMS WITH AN ATA ADAPTER BOARD ........1-14 3.8.1 Adapter Board Installation ................1-14 3.9 TECHNIQUES IN DRIVE CONFIGURATION ..........1-16 3.9.1 The 528-Megabytes Barrier ................1-16 3.9.2 The 8.4-Gigabytes Barrier ................1-17 3.9.3 Operating system limitations ................1-17 3.10 SYSTEM STARTUP AND OPERATION ............
  • Page 7 Table of Contents 5.3.1 Disk Caching ....................1-10 5.3.2 Head and Cylinder Skewing ................1-12 5.3.3 Error Detection and Correction ..............1-13 5.3.4 Defect Management ..................1-15 % J C R V G T  # 6 # $ 7 5 + 0 6 ' 4 ( # % ' # 0 & # 6 # % 1 / / # 0 & 5 6.1 INTRODUCTION ....................
  • Page 8 . K U V Q H ( K I W T G U Figure 3-1 Mechanical Dimensions of Maxtor D740X-6L Hard Disk Drive ....1-1 Figure 3-2 Drive Packing Assembly ................1-2 Figure 3-3 Drive Packing Assembly of a Polypropylene 20-Pack Container ....1-3 Figure 3-4 Jumper Locations for the Hard Disk Drive ............
  • Page 9 . K U V Q H 6 C D N G U Table 3-1 AT Jumper Options ....................1-6 Table 3-2 J1 Power Connector, Section A ................1-13 Table 3-3 Logical Addressing Format .................. 1-18 Table 4-1 Specifications ......................1-1 Table 4-2 Formatted Capacity....................
  • Page 10 Table of Contents Maxtor D540X-4K 20.0/40.0/60.0/80.0GB AT...

  • Page 11: Audience

    % J C R V G T  # $ 1 7 6 6 * + 5 / # 0 7 # . This chapter gives an overview of the contents of this manual, including the intended audience, how the manual is organized, terminology and conventions, and references.    # 7 &...

  • Page 12: Command Interface

    A b o u t T h i s M a n u a l • bpi bits per inch • dB decibels • dBA decibels, A weighted • DPS Data Protection System • SPS Shock Protection System • ECC error correcting code •...
  • Page 13 About This Manual • Parameters: Parameters are given as initial capitals when spelled out, and are given as all capitals when abbreviated. Examples are Prefetch Enable (PE), and Cache Enable (CE). • Hexadecimal Notation: The hexadecimal notation is given in 9-point subscript form.
  • Page 14 A b o u t T h i s M a n u a l 1 - 4 M a x t o r D 7 4 0 X - 6 L 2 0 . 0 / 4 0 . 0 / 6 0 . 0 / 8 0 . 0 G B A T...

  • Page 15: Key Features

    % J C R V G T  ) ' 0 ' 4 # . & ' 5 % 4 + 2 6 + 1 0 This chapter summarizes the general functions and key features of the Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT hard disk drives, as well as the applicable standards and regulations.

  • Page 16: Multiword Dma

    G e n e r a l D e s c r i p t i o n Performance • Average seek time of 8.5ms • Average rotational latency of 4.17ms • New Ultra ATA interface with Maxtor-patented Ultra ATA/133 protocol supporting burst data transfer rates of 133MB/s.
  • Page 17 General Description Versatility • Power saving modes • Downloadable firmware • Cable select feature • Ability to daisy-chain two drives on the interface    4 ' ) 7 . # 6 1 4 ; % 1 / 2 . + # 0 % ' 5 6 # 0 & # 4 & 5 Maxtor Corporation’s disk drive products meet all domestic and international product safety regulatory compliance requirements.
  • Page 18 G e n e r a l D e s c r i p t i o n 2 - 4 M a x t o r D 7 4 0 X - 6 L 2 0 . 0 / 4 0 . 0 / 6 0 . 0 / 8 0 . 0 G B A T...
  • Page 19 % J C R V G T  + 0 5 6 # . . # 6 + 1 0 This chapter explains how to unpack, configure, mount, and connect the Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT hard disk drive prior to operation. It also explains how to start up and operate the drive.
  • Page 20 Installation    7 0 2 # % - + 0 ) + 0 5 6 4 7 % 6 + 1 0 5 % # 7 6 + 1 0  The maximum limits for physical shock can be exceeded if the drive is not handled properly.
  • Page 21 Installation ( K I W T G   Drive Packing Assembly of a Polypropylene 20-Pack Container Note: The 20-pack container should be shipped in the same way it was received from Maxtor. When individual drives are shipped from the 20-pack container then it should be appropriately packaged (not supplied with the 20-pack) to prevent damage.

  • Page 22: Hardware Options

    Installation    * # 4 & 9 # 4 ' 1 2 6 + 1 0 5 The configuration of a Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT hard disk drive depends on the host system in which it is to be installed. This section describes the hardware options that you must take into account prior to installation.
  • Page 23 Installation ( K I W T G   Jumper Locations on the Interface Connector The configuration of the following Three jumpers controls the drive’s five modes of operation: • CS – Cable Select • DS – Drive Select • PK– Jumper Parking Position (Slave mode) •...
  • Page 24 Installation 6 C D N G   AT Jumper Options PIN 28 DESCRIPTION Drive is configured as a slave Drive is configured as Master (Device 0) when attached to the end of a 80 conductor Ultra ATA cable Drive is configured as a Master Open Drive is configured as a Slave (Device 1) when attached to the middle of a 80 conductor Ultra ATA...

  • Page 25: Drive Select (Ds) Jumper

    Installation      & T K X G 5 G N G E V & 5 , W O R G T You can also daisy-chain two drives on the ATA bus interface by using their Drive Select (DS) jumpers.
  • Page 26 Installation      # N V G T P C V G % C R C E K V [ # % For user capacities below 66,055,248 sectors (32GB), inserting the AC jumper limits the Number of Cylinders field 1 to a value of 16,383, as reported in IDENTIFY DEVICE data word.
  • Page 27 Installation    $   % #    $  " There are two ways you can configure a system to allow the Maxtor D740X-6L hard disk drives to communicate over the ATA bus of an IBM or IBM-compatible PC: 1 .
  • Page 28 Installation    / 1 7 0 6 + 0 ) Drive mounting orientation, clearance, and ventilation requirements are described in the following subsections.      1 T K G P V C V K Q P The mounting holes on the Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT hard disk drives allow the drive to be mounted in any orientation.
  • Page 29 Installation ( K I W T G   Mounting Screw Clearance for the Maxtor Hard Disk Drives % # 7 6 + 1 0  The PCB is very close to the mounting holes. Do not exceed the specified length for the mounting screws. The specified screw length allows full use of the mounting hole threads, while avoiding damaging or placing unwanted stress on the PCB.
  • Page 30 Installation      % N G C T C P E G Clearance from the drive to any other surface (except mounting surfaces) must be a minimum of 1.25 mm (0.05 inches).      8 G P V K N C V K Q P The Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT hard disk drives operate without a cooling fan, provided the ambient air temperature does not exceed 131°F...
  • Page 31 Installation      & % 2 Q Y G T ,  5 G E V K Q P # The recommended mating connectors for the +5 VDC and +12 VDC input power are listed in Table 3-2. 6 C D N G   J1 Power Connector, Section A VOLTAGE MATING CONNECTOR TYPE AND PART NUMBER...
  • Page 32 Installation    ( 1 4 5 ; 5 6 ' / 5 9 + 6 * # / 1 6 * ' 4 $ 1 # 4 & # 6 # # & # 2 6 ' 4 You can install the Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT hard disk drives in an AT-compatible system that contains a 40-pin ATA bus connector on the motherboard.
  • Page 33 Installation        % Q P P G E V K P I V J G # F C R V G T $ Q C T F C P F V J G & T K X G Use a 40-pin ribbon cable to connect the drive to the board.
  • Page 34 Installation ( K I W T G    Completing the Drive Installation    6 ' % * 0 + 3 7 ' 5 + 0 & 4 + 8 ' % 1 0 ( + ) 7 4 # 6 + 1 0      6 J G    / G I C D [ V G U $ C T T K G T Older BIOS that only support Int 13 commands for accessing ATA drives through...

  • Page 35: Alternate Capacity (Ac)

    Installation • Use a hard disk controller that translates the hard drive parameters to an appropriate setup for both MS-DOS and the computer system’s ROM- BIOS. • Insert the Alternate Capacity (AC) jumper on the drive (see Section 3.3.5).      6 J G    ) K I C D [ V G U $ C T T K G T Newer BIOS’s allow users to configure disk drives to go beyond the 528MB barrier by using several BIOS translation schemes.

  • Page 36: Adapter Board

    Installation     5 ; 5 6 ' / 5 6 # 4 6 7 2 # 0 & 1 2 ' 4 # 6 + 1 0 Once you have installed the Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT hard disk drive, and adapter board (if required) in the host system, you are ready to partition and format the drive for operation.
  • Page 37 Installation 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, heads, and sectors for a particular drive type. You must choose a drive type that meets the following requirements: For the 10.2GB, 20.0GB, 30.0GB, 40.0GB, 60.0GB: Logical Cylinders x Logical Heads x Logical Sectors/Track x 512 = 8,455,200,768 Boot the system using the operating system installation disk—for example,...
  • Page 38 Installation 3-20 Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT...

  • Page 39: Formatted Capacity

    % J C R V G T  5 2 ' % + ( + % # 6 + 1 0 5 This chapter gives a detailed description of the physical, electrical, and environmental characteristics of the Maxtor D740X-6L hard disk drives.    5 2 ' % + ( + % # 6 + 1 0 5 7 / / # 4 ;...

  • Page 40: Data Transfer Rates

    S p e c i f i c a t i o n s / # : 6 1 4 &    :  . & ' 5 % 4 + 2 6 + 1 0     ) $     ) $     ) $     ) $...
  • Page 41 Specifications    ( 1 4 / # 6 6 ' & % # 2 # % + 6 ; At the factory, the Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT hard disk drives receive a low-level format that creates the actual tracks and sectors on the drive. Table 4-2 shows the capacity resulting from this process.

  • Page 42: Timing Specifications

    S p e c i f i c a t i o n s    6 + / + 0 ) 5 2 ' % + ( + % # 6 + 1 0 5 Table 4-3 illustrates the timing specifications of the Maxtor D740X-6L hard disk drives.

  • Page 43: Power Reset Limits

    Specifications 9. Average random seek is defined as the average seek time between random logical block addresses (LBAs).    2 1 9 ' 4 The Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT hard disk drives operate from two supply voltages: • +12V ±10% •...

  • Page 44: Power Requirements

    S p e c i f i c a t i o n s      2 Q Y G T 4 G S W K T G O G P V U Table 4-5 lists the voltages and typical average corresponding currents for the various modes of operation of the Maxtor D740X-6L hard disk drives.

  • Page 45: Acoustics

    Specifications 3. Idle mode is in effect when the drive is not reading, writing, seeking, or executing any commands. A portion of the R/W circuitry is powered down, the motor is up to speed and the Drive Ready condition exists. 4.
  • Page 46 S p e c i f i c a t i o n s    / ' % * # 0 + % # . Maxtor D740X-6L hard disk drives are designed to meet the form factor dimensions of the SFF committee specification SFF8300.

  • Page 47: Shock And Vibration

    Specifications    5 * 1 % - # 0 & 8 + $ 4 # 6 + 1 0 The Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT hard disk drives can withstand levels of shock and vibration applied to any of its three mutually perpendicular axes, or principal base axis, as specified in Table 4-8.
  • Page 48 S p e c i f i c a t i o n s     4 ' . + # $ + . + 6 ; Mean Time Between Failures (MTBF): The projected field MTBF is 800,000 hours.
  • Page 49 Specifications     & + 5 - ' 4 4 1 4 5 Table 4-9 provides the error rates for the Maxtor D740X-6L hard disk drives. Error Rates 6 C D N G   ' 4 4 1 4 6 ; 2 ' / # : + / 7 / 0 7 / $ ' 4 1 ( ' 4 4 1 4 5 Retry recovered read errors 1 event per 10...

  • Page 50: J C R V G T

    % J C R V G T  $ # 5 + % 2 4 + 0 % + 2 . ' 5 1 ( 1 2 ' 4 # 6 + 1 0 This chapter describes the operation of Maxtor D740X-6L hard disk drives’ functional subsystems.
  • Page 51 Basic Principles of Operation A Generic Hard Disk Drive Exploded View ( K I W T G   Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT...
  • Page 52 B a s i c P r i n c i p l e s o f O p e r a t i o n      $ C U G % C U V K P I # U U G O D N [ A single-piece, e-coated, aluminum-alloy base casting provides a mounting surface for the drive mechanism and PCB.
  • Page 53 Basic Principles of Operation      * G C F U V C E M # U U G O D N [ The headstack assembly consists of read/write heads, head arms, and a coil joined together by insertion molding to form a rotor subassembly, bearings, and a flex circuit. Read/write heads mounted to spring-steel flexures are swage mounted onto the rotary positioner assembly arms.

  • Page 54: Drive Electronics

    B a s i c P r i n c i p l e s o f O p e r a t i o n      # K T ( K N V T C V K Q P The Maxtor D740X-6L hard disk drives are Winchester-type drives.
  • Page 55 Basic Principles of Operation      + P V G I T C V G F z 2 T Q E G U U Q T & K U M % Q P V T Q N N G T C P F # 6 # + P V G T H C E G ' N G E V T Q P K E U The µProcessor, Disk Controller, and ATA Interface electronics are contained in a proprietary ASIC developed by Maxtor, as shown below in Figure 5-3.

  • Page 56: Read/Write Asic

    B a s i c P r i n c i p l e s o f O p e r a t i o n The integrated µProcessor, Disk Controller, and ATA Interface Electronics have nine functional modules (described below): •...
  • Page 57 Basic Principles of Operation The Buffer Controller supports both drive and host address rollover and reloading, to allow for buffer segmentation. Drive and host addresses may be separately loaded for automated read/write functions. The Buffer Controller operates under the direction of the µProcessor.        5 G T X Q 2 T Q E G U U Q T The Servo Processor in the Read Write Channel ASIC provides servo data recovery...
  • Page 58 B a s i c P r i n c i p l e s o f O p e r a t i o n • PLL • Serial Interface • TA Detection and Correction        2 T G % Q O R G P U C V Q T The pre-compensator introduces pre-compensation to the write data received from the sequencer module in the DCIIA.

  • Page 59: Preamplifier And Write Driver

    Basic Principles of Operation      2 T G # O R N K H K G T C P F 9 T K V G & T K X G T The PreAmplifier and Write Driver provides write driver and read pre-amplifier functions, and R/W head selection.
  • Page 60 B a s i c P r i n c i p l e s o f O p e r a t i o n transferring data requested by the host. Unlike a noncaching controller, Maxtor’s disk controller continues a read operation after the requested data has been transferred to the host system.

  • Page 61: Head And Cylinder Skewing

    Basic Principles of Operation The requested read data takes up a certain amount of space in the cache segment. Hence, the corresponding prefetch data can essentially occupy the rest of the space within the segment. The other factors determining prefetch size are the maximum and minimum prefetch.
  • Page 62 B a s i c P r i n c i p l e s o f O p e r a t i o n        5 M G Y 1 H H U G V U 6 C D N G   S k e w O f f s e t s 5 9 + 6 % * 6 + / '...
  • Page 63 Basic Principles of Operation of up to 150 bits within one sector can be corrected “on-the-fly,” in real time as they occur, allowing a high degree of data integrity with no impact on the drive’s performance. The drive does not need to re-read a sector on the next disk revolution or apply ECC for those errors that are corrected on-the-fly.
  • Page 64 B a s i c P r i n c i p l e s o f O p e r a t i o n        ' % % ' T T Q T * C P F N K P I When a data error occurs, the Maxtor D740X-6L hard disk drives check to see if the error is correctable on-the-fly.
  • Page 65 Basic Principles of Operation Sectors are considered to contain grown defects if the 14/15/16 10-bit symbols ECC algorithm must be applied to recover the data. If this algorithm is successful, the corrected data is stored in the newly allocated sector. If the algorithm is not successful, a pending defect will be added to the defect list.
  • Page 66 B a s i c P r i n c i p l e s o f O p e r a t i o n 5 - 1 7 M a x t o r D 7 4 0 X - 6 L 2 0 . 0 / 4 0 . 0 / 6 0 . 0 / 8 0 . 0 G B A T...
  • Page 67 % J C R V G T  # 6 # $ 7 5 + 0 6 ' 4 ( # % ' # 0 & # 6 # % 1 / / # 0 & 5 This chapter describes the interface between Maxtor D740X-6L 20.0/40.0/60.0/ 80.0GB AT hard disk drives and the ATA bus.
  • Page 68 ATA Bus Interface and ATA Commands    4 ' ) + 5 6 ' 4 # & & 4 ' 5 5 & ' % 1 & + 0 ) The Maxtor D740X-6L hard disk drives allow their host systems to address the full set of command and control registers as specified in ATA/ATAPI-6 section 7.
  • Page 69 ATA Bus Interface and ATA Commands      / W N V K Y Q T F & / # The drives support the Multiword DMA protocol.      7 N V T C & / # ( G C V W T G 5 G V The drives support the Ultra DMA feature set for the following commands: •...

  • Page 70: Host Protected Area Feature Set

    ATA Bus Interface and ATA Commands      5 G E W T K V [ / Q F G ( G C V W T G 5 G V The drives support the following commands from the optional Security Mode feature set: •...
  • Page 71 ATA Bus Interface and ATA Commands      + & ' 0 6 + ( ; & ' 8 + % ' + P H Q T O C V K Q P Identify Device Parameters 6 C D N G   9 Q T F $ K V U &...
  • Page 72 ATA Bus Interface and ATA Commands Capabilities Reserved for the IDENTIFY PACKET DEVICE command. Standby timer values are supported 0F00h Reserved for the IDENTIFY PACKET DEVICE command. IORDY supported IORDY may be disabled LBA supported DMA supported. Retired Capabilities Shall be cleared to zero. Shall be set to one.
  • Page 73 ATA Bus Interface and ATA Commands 71-74 Reserved Reserved Maximum queue depth – 1 0000h 76-79 Reserved Reserved Major version number 003Eh Minor version number 0015h Command set supported 346Bh Command set supported 5B01h Command set/feature supported extension 4003h Command set/feature enabled 3469h Command set/feature enabled 1A01h...

  • Page 74: Maxtor Specific Commands

    ATA Bus Interface and ATA Commands CFA power mode 1 0000h 161- Reserved for assignment by the Reserved CompactFlash™ Association 176- Reserved Reserved 15-8 Integrity word checksum Variable Integrity word signature 68A5h       5 ' 6 ( ' # 6 7 4 ' 5 5 W R R Q T V G F % Q O O C P F U Table 6-2 shows the suported subcommands of SET FEATURES organized by feature name.
  • Page 75 ATA Bus Interface and ATA Commands length in sectors of the defect list in the Sector Count register (1F2), and the Sector Number register (1F3), with the Sector Count register containing the LSB of the 2- byte value (see Table 6-3). The defect list length is a fixed value for each Maxtor product and can be calculated as follows: length in sectors = (((maximum number of defects) * 8 + 4) + 511)/512 At the completion of the command, the task file registers 1F2 –...
  • Page 76 ATA Bus Interface and ATA Commands READ DEFECT LIST Command Bytes 6 C D N G   4 ' ) + 5 6 ' 4 8 # . 7 ' & ' ( + 0 + 6 + 1 0 Sector Variable Length in Sectors...
  • Page 77 ATA Bus Interface and ATA Commands DEFECT LIST DATA FORMAT 6 C D N G   $ ; 6 ' & ' 5 % 4 + 2 6 + 1 0 8* (Number of Defects) (MSB) 8* (Number of Defects) (LSB) 4–11 Defect Entry #1...
  • Page 78 ATA Bus Interface and ATA Commands         4 ' # & % 1 0 ( + ) 7 4 # 6 + 1 0 The READ CONFIGURATION command displays the configuration of the drive. Like the SET CONFIGURATION command, this command is secured to prevent accidentally accessing it.
  • Page 79 ATA Bus Interface and ATA Commands         5 ' 6 % 1 0 ( + ) 7 4 # 6 + 1 0 The SET CONFIGURATION command is secured to prevent accessing it accidentally.
  • Page 80 ATA Bus Interface and ATA Commands In Table 6-9: 0 Q V G  Registers 1F2h through 1F5h must contain the exact values shown above. These values function as a key. The drive responds by setting the ABRT bit in the Error register if the key is not entered correctly.
  • Page 81 ATA Bus Interface and ATA Commands CE – Cache Enable (Byte 32, Bit 0): When set to 1, this bit indicates that the drive will activate caching on all READ commands. With the CE bit set to 0, the drive will disable caching and use the RAM only as a transfer buffer.
  • Page 82 ATA Bus Interface and ATA Commands D r i v e P a r a m e t e r s WCE – Write Cache Enable (Byte 39, Bit 2): When this bit is set to1, the Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT hard disk drives enable the Write Cache. This indicates that the drive returns GOOD status for a write command after successfully receiving the data, but before writing it to the disk.
  • Page 83 ATA Bus Interface and ATA Commands Cylinder High Device/Head Status DRDY PREREQUISITES - DRDY set equal to one. SMART enabled. DESCRIPTION - This command returns the device’s attribute thresholds to the host. Upon receipt of this command from the host, the device sets BSY, reads the attribute thresholds from non-volatile memory, sets DRQ, clears BSY, asserts INTRQ, and then waits for the host to transfer the 512 bytes of attribute threshold information from the device via the Data register.
  • Page 84 ATA Bus Interface and ATA Commands Individual Threshold Data Structure 6 C D N G    & G U E T K R V K Q P $ [ V G U ( Q T O C V 6 [ R G Attribute ID number binary...
  • Page 85 ATA Bus Interface and ATA Commands S t a t u s f l a g • Bit 0 -Pre-failure/advisory - If the value of this bit equals zero, an attribute value less than or equal to its corresponding attribute threshold indicates an advisory condition where the usage or age of the device has exceeded its intended design life period.
  • Page 86 ATA Bus Interface and ATA Commands 4 G I K U V G T Cylinder High Device/Head Command NORMAL OUTPUTS - If the device has not detected a threshold exceeded condition, the device sets the Cylinder Low register to 4Fh and the Cylinder High register to C2h.
  • Page 87 ATA Bus Interface and ATA Commands 4 G I K U V G T Features Sector Count Sector Number Cylinder Low Cylinder High Device/Head Command NORMAL OUTPUTS - None ERROR OUTPUTS - If the device does not support this command, if SMART is disabled or if the values in the Features, Cylinder Low or Cylinder High registers are invalid, an Aborted command error is posted.
  • Page 88 ATA Bus Interface and ATA Commands 6-22 Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT...
  • Page 89 ) . 1 5 5 # 4 ; ALLOCATION UNIT – An allocation unit, also known as a cluster, is a group of sectors on the disk that can be reserved for the ACCESS – (v) Read, write, or update use of a particular file.
  • Page 90 Glossary BPI – Abbreviation for bits per inch. A CONTROLLER CARD – An adapter measure of how densely information is packed holding the control electronics for one or on a storage medium. Flux changes per inch is more hard disks, usually installed in a slot in also a term commonly used in describing the computer.
  • Page 91 Glossary DISK CONTROLLER – A plug-in board, or embedded circuitry on the drive, that passes information to and from the disk. The FAT – Acronym for file allocation table. A data Maxtor disk drives all have controllers table stored on the outer edge of a disk that embedded on the drive printed-circuit board.
  • Page 92 Glossary GIGABYTE (GB) – One billion bytes (one INITIALIZE – See low level formatting. thousand megabytes). INITIATOR – A SCSI device that requests GUIDE RAILS – Plastic strips attached to another SCSI device to perform an operation. the sides of a disk drive mounted in an IBM A common example of this is a system AT and compatible computers so that the requesting data from a drive.
  • Page 93 Glossary KILOBYTE (K) – A unit of measure MB – See megabyte. consisting of 1,024 (2 ) bytes. 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.
  • Page 94 Glossary MTTR – Mean Time To Repair. The other rigid material) that is mounted inside a average time it takes to repair a drive that has fixed disk drive. Most drives use more than failed for some reason. This only takes into one platter mounted on a single spindle (shaft) consideration the changing of the major to provide more data storage surfaces in a...
  • Page 95 Glossary REMOVABLE DISK – Generally said of header, which cannot be overwritten. disk drives where the disk itself is meant to be removed, and in particular of hard disks using SEEK – A movement of the disk read/write disks mounted in cartridges. Their advantage head in or out to a specific track.
  • Page 96 Glossary platter is made of beneath the magnetic coating. Hard disks are generally made of aluminum or magnesium alloy (or glass, for UNFORMATTED CAPACITY – The optical disks) while the substrate of floppies is total number of bytes of data that could be fit usually mylar.

  • Page 97: Firmware Features

    + 0 & ' : daisy-chain abbreviations daisy-chained actuator lock Data Synchronizer 1-3, 1-14 adapter board Data transfer operations 1-10 Adaptive Caching DATA TRANSFER RATE 1-10 Adaptive segmentation Data transfer Rates air filtration DC motor assembly AIRLOCK® 6-15 DCR (disable early correction) 6-15 ARR (automatic read reallocation) 1-15...
  • Page 98 Index 1-14 1-11 floppy drive mounting screw clearance 1-11 Formatted Capacity mounting screws 1-19 MS-DOS 1-10 MTBF hardware options headstack assembly Humidity noise Nominal conditions 1-15 Non-repeatable errors 6-15 number of retries 1-3, 1-9 IDE interface controller IDE-bus interface 1-13 IDE-bus interface connector packing assembly Idle...
  • Page 99 Index 1-4, 1-10 rotary positioner write driver rotary positioner assembly RUEE (reallocate uncorrectable error en- 6-16 ables) 1-14 sector data field Servo Controller 6-13 set configuration set configuration without saving to disk shipping container SHOCK Slave Present slave present (SP) jumper Specifications sputtered thin-film coating supply voltages...

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