Seagate ST94811A,Momentus ST94011A,Momentus ST92011A,Momentus ST92811A,Momentus 54,ST94011A,ST92011A,ST92811A Product Manual

Momentus 54

ST94011A

ST92011A

ST94811A

ST92811A

Momentus 54

ST94011A

ST92011A

ST94811A

ST92811A

©2003–2004, Seagate Technology LLC All rights reserved

Publication number: 100271718, Rev. E

June 2004

Seagate and Seagate Technology are registered trademarks of Seagate Technology LLC.
SeaTools, SeaFONE, SeaBOARD, SeaTDD, and the Wave logo are either registered trade
marks or trademarks of Seagate Technology LLC. Other product names are registered trade­marks or trademarks of their owners.

Seagate reserves the right to change, without notice, product offerings or specifications. No

part of this publication may be reproduced in any form without written permission of Seagate

Technology LLC.

-

Revision status summary sheet

Revision Date Sheets Affected

Rev. A 04/11/03 All.
Rev. B 04/15/03 Update DC startup current profile.
Rev. C 07/08/03 Pages 3, 4, 6, 7, 8, 12, 18, and 19. New format (all pages).
Rev. D 12/03/03 Pages 29 through 31.
Rev. E 06/22/04 Page 11.

Contents

1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1 Specification summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.4 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.5 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.6 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.7 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.8 Time to ready. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.9 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.9.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.9.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.9.3 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.9.4 Power-management modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.10 Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.10.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.10.2 Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.10.3 Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.10.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.10.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.10.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.11 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.12 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.13 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.14 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.14.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.14.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.14.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.1 Handling and static discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2 Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2.1 Master/slave configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2.2 Cable-select option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.3 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.1 ATA interface signals and connector pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.1.1 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.1.2 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.1.3 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.1.4 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.0 Compatibility summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.1 Installation considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.2 BIOS versions tested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.3 Operating system versions tested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.4 Compatibility test configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.5 Software utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.6 Other certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

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List of Figures

Figure 1. Momentus disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Typical 5V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 3. Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 4. Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

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viii Momentus Product Manual, Rev. E

1.0 Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate

®

Momentus™ 54 drives:

• ST94011A

• ST94811A

• ST92011A

• ST92811A

These drives provide the following key features:

• 5,400-RPM spindle speed and 2-Mbyte buffer (8 Mbytes on ST94811A and ST92811A models) combine for
superior performance.

• Quiet operation. Fluid Dynamic Bearing (FDB) motor.

• High instantaneous (burst) data transfer rates (up to 100 Mbytes per second) using Ultra DMA mode 5.

• Giant magnetoresistive (GMR) recording heads and EPRML technology, which provide the drives with
increased areal density.

• State-of-the-art cache and on-the-fly error-correction algorithms.

• Full-track multiple-sector transfer capability without local processor intervention.

• 800 Gs nonoperating shock, and 225 Gs operating shock.

• SeaTools™ diagnostic software performs a drive self-test that eliminates unnecessary drive returns.

• The 3D Defense System™, which includes Drive Defense, Data Defense, and Diagnostic Defense, offers the
industry’s most comprehensive protection for disc drives.

• Support for S.M.A.R.T. drive monitoring and reporting.

• Support for Read Multiple and Write Multiple commands.

• Support for autodetection of master/slave drives that use cable select (CSEL).

Figure 1. Momentus 54 disc drive

Momentus Product Manual, Rev. E 1

2 Momentus Product Manual, Rev. E

2.0 Drive specifications

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal
power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate
ST94011A, ST92011A, ST92811A, and ST94811A model drives.

2.1 Specification summary

The specifications listed in this table are for quick reference. For details on specification measurement or defi­nition, see the appropriate section of this manual.

Table 1: Specifications

Drive specification ST94011A ST94811A ST92011A ST92811A

Formatted Gbytes (512 bytes/sector) 40 40 20 20

Guaranteed sectors 78,140,160 78,140,160 39,070,080 39,070,080

Bytes per sector 512

Physical read/write heads 2 2 1 1

Discs 1 1 1 1

Cache (Mbytes) 2 8 2 8

Recording density, BPI (bits/inch max) 642,000

Track density. TPI (tracks/inch max) 100,780

Areal density (Mbits/inch2 max) 65

Spindle speed (RPM) 5,400

Internal data transfer rate OD (Mbytes/sec max) 48.25

Sustained data transfer rate OD (Mbytes/sec) 34.5

I/O data-transfer rate (Mbytes/sec max) 100

ATA data-transfer modes supported PIO modes 0–4; Multiword DMA modes 0–2; Ultra DMA modes 0–5

Height 9.5 +/-0.2 mm (0.374 +/-.0078 inches)

Width 69.85 +/-0.25 mm (2.75 +/-0.0098 inches)

Length 100.2 +/-0.25 mm (3.945 +/-0.0098 inches)

Weight (typical) 99 grams (0.218 lb.)

Average latency (msec) 5.6

Power-on to ready (sec typical) 3.9

Standby to ready (sec typical) 2.6 sec

Startup current 5V (peak) 1.2 amps

Track-to-track seek time (msec typical) 1.5 (read), 2.0 (write)

Average seek time (msec typical) 12.0

Average seek, read (msec typical) 12.0

Average seek, write (msec typical) 14.0

Momentus Product Manual, Rev. E 3

Table 1: Specifications

Drive specification ST94011A ST94811A ST92011A ST92811A

Full-stroke seek (msec) 22 (typical); 26 (max)

Seek power (typical) 2.4 watts

Read/write power (typical) 2.4 watts

Idle mode (typical) 1.2 watts

Standby mode 0.36 watts (typical)**

Sleep mode 0.36 watts (typical)**

Voltage tolerance (including noise) 5V ± 5%

Ambient temperature 5° to 55°C (operating)

Temperature gradient (°C per hour max) 20°C (operating)

Relative humidity (noncondensing) 5% to 90% (operating)

Relative humidity gradient 30% per hour max

Wet bulb temperature (°C max) 33°C (operating)

Altitude, operating –192.12 m to 3,048 m (–650 ft to 10,000+ ft)

Altitude, nonoperating (below mean sea level, max) –304.8 m to 12,192 m (–1,000 ft to 40,000+ ft)

Shock, operating (Gs max at 2 msec) 225

Shock, nonoperating (Gs max at 2 msec) 800

Shock, nonoperating (Gs max at 1 msec) 800

Shock, nonoperating (Gs max at 0.5 msec) 400

Vibration, operating (max displacement may apply below
10 hz)

Vibration, nonoperating (max displacement may apply
below 22 hz)

Drive acoustics, sound power (bels)

Idle* 2.3 (typical)

Quiet seek 2.5 (typical)

Performance seek 3.0 (typical)

Nonrecoverable read errors

Mean time between failures (power-on hours) 330,000 at 25°C

Load/Unload (U/UL) cycles

25°C, 50% relative humidity

32°C, 80% relative humidity
5°C, 80% relative humidity
5°C, 10% relative humidity
55°C, 16% relative humidity

Service life 5 Years

Warranty 1 Year

–40° to 65°C (nonoperating)

30°C (nonoperating)

5% to 95% (nonoperating)

40°C (nonoperating)

1.0 Gs (0 to peak, 5–500 Hz)

5.0 Gs (0 to peak, 5–500 Hz)

2.5 (max)

2.7 (max)

3.2 (max)

1 per 1014 bits read

Max case temperature: 60°C

300,000 software-controlled power on/off cycles
20,000 hard power on/off cycles

100,000 software-controlled power on/off cycles
20,000 hard power on/off cycles

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and

power to operational levels.

**Typical notebooks will pull power to the drive when entering S3 and S4; while in the S3 and S4 states, drive sleep and drive standby modes

will not contribute to battery power consumption.

4 Momentus Product Manual, Rev. E

2.2 Formatted capacity

Model Formatted capacity Guaranteed sectors Bytes per sector

ST94011A 40 Gbytes 78,140,160 512

ST94811A 40 Gbytes 78,140,160 512

ST92011A 20 Gbytes 39,070,080 512

ST92811A 20 Gbytes 39,070,080 512

2.3 Default logical geometry

Cylinders Read/write heads Sectors per track

16,383 16 63

LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,
where n is the number of guaranteed sectors as defined above.

2.4 Physical organization

Model Read/write heads Number of discs

ST94011A 2 1

ST94811A 2 1

ST92011A 1 1

ST92811A 1 1

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2.5 Recording and interface technology

Technology Specification

Interface Parallel ATA

Recording method RLL 0,11

Recording density BPI (bits/inch max) 642,000

Track density TPI (tracks/inch max) 100,780

Areal density (Mbits/inch2 max) 65

Spindle speed (RPM) (± 0.2%) 5,400

Internal data-transfer rate OD (Mbytes/sec max) 48.25

Sustained data transfer rate OD (Mbytes/sec max) 34.5

I/O data-transfer rate (Mbytes/sec max) 100 (Ultra DMA mode 5)

Interleave 1:1

Cache buffer

ST94011A and ST92011A 2 Mbytes (2,048 kbytes)

ST94811A and ST92811A 8 Mbytes (8,192 kbytes)

2.6 Physical characteristics

Height (mm)

(inches)

Width (mm)

(inches)

Length (mm)

(inches)

Typical weight (grams)

(pounds)

9.5 +/-0.2

0.374 +/-0.0078

69.85 +/-0.25

2.75 +/-0.0098

100.2 +/-0.25

3.945 +/-0.0098

99

0.218

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