Seagate DIAMONDMAX PLUS 8 User Manual

DiamondMax Plus8 20/30/40GB AT

Product Manual

May 13, 2005

Revision 1

Part Number: 000001876

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.

UL/CSA/VDE/TUV/RoHS

UL standard 1954 recognition granted under File No. E78016

CSA standard C22.2-950 certification granted under File No. LR49896

TUV Rheinland EN 60 950

Tested to FCC Rules for Radiated and Conducted Emissions, Part 15, Sub Part J, for Class-B Equipment.

DiamondMax Plus 8 model number 6K040L0 meets the EU directive for the Restriction and Use of Haz-

ardous Substances (RoHS), 2002/95/EC of the European Parliament and the council of 27 January, 2003.

DiamondMax Plus 8 model numbers 6EXXXL0 do not meet these initiatives.

PATENTS

These products are covered by or licensed under one or more of the following U.S. Patents:

4,419,701; 4, 538,193 4,625,109; 4,639,798; 4,647,769; 4,647,997; 4,661,696; 4,669,004; 4,675,652;

4,703,176; 4,730,321; 4,772,974; 4,783,705; 4,819,153; 4,882,671; 4,920,442; 4,920,434; 4,982,296;

5,005,089; 5,027,241; 5,031,061; 5,084,791; 5,119,254; 5,160,865; 5,170,229; 5,177,771; Other U.S. and

Foreign Patents Pending.

Maxtor

countries. Maxtor DiamondMax Plus8, AutoTransfer, AutoRead, AutoWrite, DisCache, DiskWare, Defect

Free Interface, and WriteCache are trademarks of Maxtor Corporation. All other brand names or trade-

marks are the property of their manufacturers.

, MaxFax® are registered trademarks of Maxtor Corporation, registered in the U.S.A. and other

Maxtor reserves the right to make changes and improvements to its products, without incurring any obliga-

tion to incorporate such changes or improvements into units previously sold or shipped.

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.

THIS PUBLICATION IS PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER

EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

OF MERCHANTABILITY, FITNESS FOR A PARTIULAR PURPOSE, OR NON-INFRINGE-

MENT.

You can dowload Maxtor publications directly from Maxtor at, www.maxtor.com

Part Number: 000001876

Before You Begin: 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. For repair information, contact

the Maxtor Product Support Center at 1-800-2MAXTOR.

CAUTION: Maxtor hard drives are precision products. Failure to follow these precautions and guidelines

outlined here may lead to product failure, damage and invalidation of all warranties.

1 BEFORE unpacking or handling a drive, take all proper electrostatic discharge (ESD) precau-

tions, including personnel and equipment grounding. Stand-alone drives are sensitive to

1 electrostatic discharge (ESD) damage.

2 BEFORE removing drives from their packing material, allow them to reach room temperature.

3 During handling, NEVER drop, jar, or bump a drive.

4 Once a drive is removed from the Maxtor shipping container, IMMEDIATELY secure the

drive through its mounting holes within a chassis. Otherwise, store the drive on a padded,

grounded, antistatic surface.

5 NEVER switch DC power onto the drive by plugging an electrically live DC source cable into

the drive's connector. NEVER connect a live bus to the drive's interface connector.

6 ELECTRICAL GROUNDING - For proper operation, the drive must be securely fastened to

a device bay that provides a suitable electrical ground to the drive baseplate.

Please do not remove or cover up Maxtor factory-installed drive labels. They contain information required

should the drive ever need repair.Thank you for your interest in Maxtor hard disk drives. This manual pro-

vides 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. For repair infor-

mation, contact the Maxtor Customer Service Center at 800-2MAXTOR or 1-303-678-2015.

Corporate Headquarters:

500 McCarthy Blvd. Milpitas, California 95035 Tel: 408-894-5000 Fax: 408-362-4740

Table of Content

Chapter 1 INTRODUCTION

1.1 MAXTOR CORPORATION................................................................. 1-1

1.2 AUDIENCE ..................................................................................... 1-1

1.3 MANUAL ORGANIZATION.................................................................1-2

1.4 TERMINOLOGY AND CONVENTIONS................................................. 1-2

1.5 REFERENCES.................................................................................. 1-4

Chapter 2 PRODUCT DESCRIPTION

2.1 PRODUCT DESCRIPTION.................................................................. 2-1

2.2 KEY FEATURES .............................................................................. 2-1

2.3 REGULATORY COMPLIANCE STANDARDS ........................................ 2-3

2.4 HARDWARE REQUIREMENTS ........................................................... 2-3

Chapter 3 PRODUCT SPECIFICATIONS

3.1 MODELS AND CAPACITIES.............................................................. 3-1

3.2 DRIVE CONFIGURATION .................................................................. 3-1

3.3 PERFORMANCE SPECIFICATIONS ..................................................... 3-2

3.4 PHYSICAL DIMENSIONS .................................................................. 3-2

3.5 POWER REQUIREMENTS.................................................................. 3-3

3.6 POWER MODE DEFINITIONS ............................................................ 3-3

3.7 EPA ENERGY STAR COMPLIANCE .................................................... 3-3

3.8 ENVIRONMENTAL LIMITS ................................................................ 3-4

3.9 SHOCK AND VIBRATION ................................................................. 3-5

3.10 RELIABILITY SPECIFICATIONS......................................................... 3-6

3.11 EMC/EMI ...................................................................................... 3-7

3.11.1 RADIATED ELECTROMAGNETIC FIELD EMISSIONS - EMC COMPLI-

ANCE......................................................................................3-7

3.11.2 CANADIAN EMISSIONS STATEMENT .......................................3-7

3.12 SAFETY REGULATORY COMPLIANCE .............................................. 3-7

3.13 RoHS COMPLIANCE ........................................................................3-7

Maxtor DiamondMax Plus 8 20/30/40GB AT i

Table of Contents

Chapter 4 INSTALLATION

4.1 SPACE REQUIREMENTS................................................................... 4-1

4.2 UNPACKING INSTRUCTIONS............................................................ 4-2

4.3 HARDWARE OPTIONS ..................................................................... 4-5

4.3.1 CABLE SELECT (CS) JUMPER ....................................................4-6

4.3.2 DRIVE SELECT (DS) JUMPER ....................................................4-7

4.3.3 MASTER JUMPER CONFIGURATION ..........................................4-7

4.3.4 JUMPER PARKING (PK) POSITION .............................................4-7

4.3.5 ALTERNATE CAPACITY (AC) ....................................................4-8

4.4 ATA BUS ADAPTER ........................................................................ 4-9

4.4.1 40-PIN ATA BUS CONNECTOR ..................................................4-9

4.4.2 ADAPTER BOARD ....................................................................4-9

4.5 MOUNTING .................................................................................. 4-10

4.5.1 ORIENTATION .......................................................................4-10

4.5.2 CLEARANCE .........................................................................4-12

4.5.3 VENTILATION ........................................................................4-12

4.6 COMBINATION CONNECTOR (J1)................................................... 4-12

4.6.1 DC POWER (J1, SECTION A) ...................................................4-13

4.6.2 EXTERNAL DRIVE ACTIVITY LED .............................................4-13

4.6.3 ATA BUS INTERFACE CONNECTOR (J1, SECTION C) ................ 4-13

4.7 FOR SYSTEMS WITH A MOTHERBOARD ATA ADAPTER................... 4-14

4.8 FOR SYSTEMS WITH AN ATA ADAPTER BOARD ............................. 4-14

4.8.1 ADAPTER BOARD INSTALLATION ...........................................4-14

4.9 TECHNIQUES IN DRIVE CONFIGURATION........................................ 4-17

4.9.1 THE 528-MEGABYTES BARRIER ..............................................4-17

4.9.2 THE 8.4-GIGABYTES BARRIER ................................................4-17

4.9.3 OPERATING SYSTEM LIMITATIONS .........................................4-18

4.10 SYSTEM STARTUP AND OPERATION ............................................ 4-18

Chapter 5 ATA BUS INTERFACE AND ATA COMMANDS

5.1 INTRODUCTION.............................................................................. 5-1

5.2 MECHANICAL INTERFACE ............................................................... 5-1

5.2.1 SIGNAL CABLE AND CONNECTOR .............................................5-1

5.3 ELECTRICAL INTERFACE ................................................................. 5-1

5.3.1 ATA BUS INTERFACE ...............................................................5-1

5.4 REGISTER ADDRESS DECODING ...................................................... 5-2

5.5 COMMAND INTERFACE................................................................... 5-2

5.5.1 GENERAL FEATURE SET ...........................................................5-2

5.5.2 SUPPORTED COMMANDS ........................................................5-2

ii Maxtor DiamondMax Plus 8 20/30/40GB AT

Table of Contents

Chapter 6

SERVICE AND SUPPORT

6.1 PRODUCT SUPPORT/TECHNICAL ASSISTANCE/CUSTOMER SERVICE. 6-1

Glossary................................................................................................G-1

Maxtor DiamondMax Plus 8 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 Jumper Locations on the Interface Connector ..........................4-5

Figure 4-5 AT Connector and Jumper Location ........................................4-8

Figure 4-6 Mounting Screw Clearance .....................................................4-9

Figure 4-7 Mounting Dimensions .........................................................4-10

Figure 4-8 J1 DC Power and ATA Bus Combination Connector ................ 4-11

Figure 4-9 Drive Power Supply and ATA Bus Interface Cables ................. 4-14

Figure 4-10 Completing the Drive Installation ..........................................4-15

Maxtor DiamondMax Plus8 20/30/40GB AT iii

List of Tables

Table 4-1 AT Jumper Option.........................................................................4-6

Table 4-2 J1 Power Connector, Section A..... .................................................4-12

Table 4-3 Logical Addressing Form.................................................................4-19

Table 5-1 Supported Commands.................................................................... 5-2

Table 5-2 Identfy Drive Command Parameters.....................................................5-5

Maxtor DiamondMax Plus8 20/30/40GB AT iv

1.1 Maxtor Corporation

Maxtor corporation is one of the world’s largest suppliers 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 business and enterprise

Products

Maxtor storage products include drives and accessories for PC’s, workstations, RAID products, enterprise applications, enterprise servers, high-end systems, consumer electronics and personal storage.

Support

Maxtor provides a variety of consumer support options, all designed to make sure the user gets fast, helpful, accurate information to help resolve any difficulties. These options include a broad, searchable knowledge base of FAQ’s, product manuals, installation guides, information on previously resolved problems, software downloads, and contact by phone or E-mail with a support person. For more information, visit

Chapter 1

Introduction

www.maxtor.com/en/support.

1.2 Audience

The DiamondMax Plus 8 20/30/40GB AT product manual is intended for several audiences. These audiences include: the end user, installer, developer, consumer electronics and personal computer original equipment manufacturer (CE/PC,OEM), and distributor. The manual provides information about installation, principles of operation, interface command implementation, and maintenance.

Maxtor DiamondMax Plus 8 20/30/40GB AT 1-1

Introduction

1.3 MANUAL ORGANIZATION

This manual is organized into 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 Support

• Glossary

1.4 TERMINOLOGY AND CONVENTIONS

In the Glossary at the back of this manual, you can find definitions for many of the terms used in this manual. In addition, the following abbreviations are used in this manual:

• ASIC application-specific integrated circuit

• ATA advanced technology attachment

• bpi bits per inch

• DA Double Amplitude (represents ph-pk shaker displacement)

• dB decibels

• dBA decibels, A weighted

• DPS Data Protection System

• SPS Shock Protection System

• ECC error correcting code

• Kfci thousands of flux changes per inch

•Hz hertz

•KB kilobytes

• LSB least significant bit

• mA milliamperes

• MB megabytes (1 MB = 1,000,000 bytes when referring to disk transfer rates or storage capacities and 1,048,576 bytes in all other cases)

• Mb/s megabits per second

1-2 Maxtor DiamondMax Plus 8 20/30/40GB AT

Introduction

• MB/s megabytes per second

• MHz megahertz

• ms milliseconds

• MSB most significant bit

• mV millivolts

• ns nanoseconds

• tpi tracks per inch

• µs microseconds

•V volts

The typographical and naming conventions used in this manual are listed below. Conventions that are unique to a specific table appear in the notes that follow that table.

Typographical Conventions:

• Names of Bits: Bit names are presented in initial capitals. An example is the Host Software Reset bit.

• Commands: Interface commands are listed in all capitals. An example is WRITE LONG.

• Register Names: Registers are given in this manual with initial capitals. An example is the Alternate Status Register.

• 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. An example is 30

• Signal Negation: A signal name that is defined as active low is listed with a minus sign following the signal. An example is RD–.

• Messages: A message that is sent from the drive to the host is listed in all capitals. An example is ILLEGAL COMMAND.

Naming Conventions:

• Host: In general, the system in which the drive resides is referred to as the host.

• Computer Voice: This refers to items you type at the computer keyboard. These items are listed in 10-point, all capitals, Courier font. An example is FORMAT C:/S.

Maxtor DiamondMax Plus 8 20/30/40GB AT 1-3

Introduction

1.5 REFERENCE

For additional information about the ATA interface, refer to the latest revision of the draft standard on the internet at http://www.t13/ using the link under “1410DAT Attachment - 6 with Packet Interface (ATA/ATAPI - 6).”

1-4 Maxtor DiamondMax Plus 8 20/30/40GB AT

2.1 PRODUCT DESCRIPTION

Maxtor drive leadership continues wit the DiamondMax Plus 8 drive - the first singlehead, single platter, 7200RPM product. DiamondMax Plus 8 drives combine performance and value making a perfect choice for mainstream consumer or commercial/business desktop users.

DiamondMax Plus 8 drives use the Ultra ATA/133 interface, the fastest desktop interface with maximum data transfer rates of 133MB/second.

Fluid dynamic bearing (FDB) motors minimize drive acoustics, allowing the drive to operate with low sound output. DiamondMax Plus 8 is designed for higher reliability. The drive’s inner diameter load/unload ramp locks the recording head into a protective carrier to cradle the head during shipment and any other time the drive is not in operation.

DiamondMax Plus 8 drives deliver high reliability and data integrity using Maxtor developed Shock Protection System (SPS) and Data Protection System (DPS). SPS and DPS give the user enhanced protection against both operating and non-operating shock and verify essential functions in seconds to minimize costly drive returns.

Chapter 2

PRODUCT DESCRIPTION

• Supports today’s favorite capacity - 40GB

• Leading mainstream performance from 7200RPM rotation speed

• ATA/133 the fastest and latest IDE interface

• FDB (Fluid Dynamic Bearing) motor for quiet operation

• Low height to improve airflow and cooling

• Low weight to reduce shipping costs

• Improved reliability with:

~ Shock Protection System

~ Data Protection System

Maxtor DiamondMax Plus8 20/30/40GB AT 2-1

General Description

2.2 KEY FEATURES

The DiamondMax Plus 8 20/30/40GB AT hard disk drives include the following key features:

General

• Formatted storage capacity of 20.0, 30.0 and 40.0 GB

• Low profile, 17 mm high

• 7200 RPM spin speed

• Industry standard 3 1/2-inch form factor

• Emulation of IBM

• Windows NT and 9X Certification

Performance

• 10.0 ms seek time

• 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.

• 2 M B buff er wit h 1.9M B (app roxim ate) Advance Cache Management (ACM).

PC AT® task file register, and all AT fixed disk commands

• Advanced Multi-burst ECC on-the-fly

• Support of all standard ATA data transfer modes with PIO mode 4 and multiword DMA mode 2, and Ultra DMA modes 0, 1, 2, 3, 4, 5 and 6

Reliability

• 57 Byte Reed-Soloman ECC with up to 54 Byte correction capability.

• S.M.A.R.T. 4 (Self-Monitoring, Analysis and Reporting Technology)

• Auto Park and Lock actuator mechanism

• Transparent media defect mapping

• High durability with 100,000 cycles for reliable load/unload function

• High performance, in-line defective sector skipping

• Reassignment of defective sectors discovered in the field, without reformatting

• Shock Protection System to reduce handling induced failures

• Data Protection System to verify drive integrity

• Quiet Drive Technology (QDT)

2-2 Maxtor DiamondMax Plus8 20/30/40GB AT

Versatility

• Power saving modes

• Downloadable firmware

• Cable select feature

• Ability to daisy-chain two drives on the interface

2.3 REGULATORY COMPLIANCE STANDARDS

Maxtor Corporation’s disk drive products meet all domestic and international product safety regulatory compliance requirements. Maxtor’s disk drive products conform to the following specifically marked Product Safety Standards:

• Underwriters Laboratories (UL) Standard 1950. This certificate is a category certification pertaining to all 3.5-inch series drives models.

• Canadian Standards Association (CSA) Standard C.22.2 No. 1950. This certificate is a category certification pertaining to all 3.5-inch series drives models.

• TUV Rheinland Standard EN60 950. This certificate is a category certification pertaining to all 3.5-inch series drives models.

General Description

Product EMI/EMS Qualifications:

• CE Mark authorization is granted by TUV Rheinland in compliance with our qualifying under EN 55022:1994 and EN 50082-1:1997.

• C-Tick Mark is an Australian authorization marked noted on Maxtor’s disk drive products. The mark proves conformity to the regulatory compliance document AS/NZS 3548: 1995 and BS EN 55022: 1995.

• Maxtor’s disk drives are designed as a separate subassembly that conforms to the FCC Rules for Radiated and Conducted emissions, Part 15 Subpart J; Class B when installed in a given computer system.

• Approval from Taiwan BSMI. Number: 3892A638

2.4 HARDWARE REQUIREMENTS

The Maxtor DiamondMax Plus 8 hard disk drives are compatible with the IBM PC AT, and other computers that are compatible with the IBM PC AT. It connects to the PC either by means of a third-party IDE-compatible adapter board, or by plugging a cable from the drive directly into a PC motherboard that supplies an ATA interface.

Maxtor DiamondMax Plus8 20/30/40GB AT 2-3

PRODUCT SPECIFICATIONS

3.1 Models and Capacities

MODELS NUMBERS

Chapter 3

Non-RoHS Compliant RoHS Compliant*

Formatted Capacity (GB LBA Mode) 20GB 30GB 40GB

GB means 1 billion bytes. Total accessible capacity varies depending on operating environment.

* Complies with European Union Directive on Restriction of Hazardous Substances (Section 3.13)

6E020L0

6E030L0

6E040L0

6K040L0*

3.2 Drive Configuration

MODELS 20GB 30GB 40GB

Data Surfaces/Number of Heads 1 1 1

Number of Disks 111

Sectors per Drive (max LBA) 40,718,160 60,058,656 80,293,248

Integrated Interface Maxtor Ultra ATA/133 (ATA-5/ATA-6)

Recording Method PRML

Servo Type Embedded

Number of Servo Sectors 180

Data Zones per Surface 16

Data Sectors per Track (ID/OD) 450/720, 612/990, 720/1140

Areal Density (Gbits/in

max, ID/OD) 33.9/25.6, 46.6/36.1, 63.2/49.7

Maxtor DiamondMax Plus8 20/30/40GB AT 3-1

Product Specifications

MODELS 20GB 30GB 40GB

Flux Density (kfci, ID/OD) OD=352/496/583

ID = 465/639/743

Recording Density (kbpi, ID/OD) ID = 446/613/713

OD = 338/476/560

Track Density (ktpi) 75.9/75.9/88.7

3-2 Maxtor DiamondMax Plus8 20/30/40GB AT

3.3 Performance Specifications

MODELS 20GB 30GB 40GB

Seek Times (typical read, ms)

Track-to-Track 0.8

Product Specifications

Average (normal seek)

Full Stroke (normal seek)

Average Latency (ms) 4.17

Controller Overhead (ms) <0.3

Rotation Speed (RPM ±0.1%) 7200

Data Transfer Speed (MByte/sec max)

To/From Interface (Maxtor Ultra ATA/133, up to)

To/From Media (ID/OD up to nn.n, where nn.n is the maximum transfer rate possible)

Sustained (ID/OD up to nn.n, where nn.n is the maximum transfer rate possible)

Data Buffer Size (MB)/Type 2/SDRAM

Drive Ready Time (typical sec) <5.0

ID = 290/399/463

OD = 454/636/738

ID = 23.9/32.5/38.2

OD = 38.2/52.6/60.5

≤ 10.0 ≤ 18.0

133

3.4 Physical Dimensions

PARAMETER VALUE

Height (maximum in mm) 17.5

Width (typical mm) 101.6

Length (maximum in mm) 146.1

Weight (maximum in grams)

≤ 510

Maxtor DiamondMax Plus8 20/30/40GB AT 3-3

Product Specifications

3.5 Power Requirements

MODE 12V (MA) 5V (MA) POWER (W)

Spin-up (peak) 1554.20 756.04 22.43

Seek 440.42 562.13 8.10

Read/Write 489.99 442.42 8.09

Idle 380.57 396.41 7.27

Standby 34.35 65.83 0.75

Sleep 34.25 65.77 0.75

3.6 Power Mode Definitions

Spin-up

The drive is spinning up following initial application 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 actuator is parked and powered off and all other circuitry is powered on. The drive is capable of responding to read commands within 40 ms.

Standby

The motor is not spinning. The drive will leave this mode upon receipt of a command that requires disk access. The time-out value for this mode is programmable. The buffer is active to accept write data.

Sleep

This is the lowest power state – with the interface set to inactive. A software or hardware reset is required to return the drive to the Standby state.

3.7 EPA Energy Star Compliance

Maxtor Corporation supports the goals of the U.S. Environmental Protection Agency’s Energy Star program to reduce the electrical power consumption of computer equipment.

3-4 Maxtor DiamondMax Plus8 20/30/40GB AT

3.8 Environmental Limits

Product Specifications

PARAMETER OPERATING

Temperature 5°C to 55°C

(with no ARR impact) 0

°C to 60°C

(margin demonstrated

Thermal Gradient 30

Relative Humidity 5% to 95% (non-condensing)

Wet Bulb 30

Altitude (relative to sea level) -650 to 10,000 feet -650 to 40,000 feet

Acoustic Noise

°C per hour (maximum)

°C (maximum)

IDLE MODE

)

(Track Following at Speed)

Fluid Bearing 2.9 bel average

3.3 bel maximum

3.0 bel average

3.3 bel maximum

NON-OPERATING/

STORAGE

low temperature (40

° C)

high temperature (71

° C) per MIL-

STD-810E, method

501.3, climatic category; hot-induced conditions.

NORMAL SEEK MODE

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.

Variation in acoustic levels from the idle specification may occur due to offline activity according to the SMART specification and/ or atmospheric conditions.

Maxtor DiamondMax Plus8 20/30/40GB AT 3-5

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