Seagate ST9100828A, ST9160821A, ST980815A, ST940815A, ST960815A User Manual

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Product Manual
Momentus®5400.3
ST9160821A ST9120822A ST9100828A ST980815A ST960815A ST940815A
100398876 Rev . C August 2007
©2004-2007, Seagate Technology LLC All rights reserved. Publication number: 100398876, Rev. C August 2007
Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate
Technology LLC in the United States and/or other countries. Momentus, Seagate­SeaBOARD, SeaFONE, SeaTDD, and SeaTools are either trademarks or registered trade­marks of Seagate Te chnolog y LLC or one of it s af filiate d comp a nies in the United States a nd/ or other countries. All other trademarks or registered trademarks are the property of their respective owners.
One gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. Quantitative usage examples for various applications are for illustrative p urpo ses. Actual quan tities w ill vary based on vari ou s factors, including fi le size, file format, features and application software. Seagate reserves the right to change, without notice, product offerings or specifications.
Momentus 5400.3 PATA Product Manual, Rev. C
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Contents
1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Specification summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.6 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.7 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.8 Time to ready. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.9 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.3 Voltage tolerance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.4 Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.10 Environmental specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.10.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.10.2 Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.10.3 Humidity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.10.4 Altitude. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.10.5 Shock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.10.6 Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.11 Acoustics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.12 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.13 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.14 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.14.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.14.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.14.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.15 Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.15.1 European Union Restriction of Hazardous Substances (RoHS) . . . . . . . . . . . . 20
2.16 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.1 Handling and static discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2 Jumper settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.2.1 Master/slave configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.2.2 Cable-select option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.3 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.1 ATA interface signals and connector pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.1.1 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.1.2 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.1.3 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.0 Compatibility summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.1 Installation considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.2 BIOS versions tested. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.3 Operating system versions tested. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.4 Compatibility test configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.5 Software utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.6 Other certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
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Momentus 5400.3 PATA Product Manual, Rev. C
Momentus 5400.3 PATA Product Manual, Rev. C
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List of Figures
Figure 1. Typical 5V startup and operation current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 2. Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 3. Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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Momentus 5400.3 PATA Product Manual, Rev. C
Momentus 5400.3 PATA Product Manual, Rev. C
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1.0 Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate Momentus®5400.3 drives:
• ST9160821A
• ST9120822A
• ST9100828A
• ST980815A
• ST960815A
• ST940815A These drives provide the following key features:
• 5,400-RPM spindle speed.
• 8-Mbyte buffer.
• Quiet operation. Fluid Dynamic Bearing (FDB) motor.
• High instantaneous (burst) data transfer rates (up to 100 Mbytes per second) using Ultra DMA mode 5.
• Tunneling Magnetoresistive (TMR) recording heads. .
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Full-track multiple-sector transfer capability without local processor intervention.
• 900 Gs nonoperating shock and 350 Gs operating shock.
• SeaTools™ diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• The 3D Defense S ystem ™, which i nclude s Drive D efen se, Dat a Defe nse, and Diagnostic Defense , of fers 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 using cable select (CSEL).
®
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Momentus 5400.3 PATA Product Manual, Rev. C
Momentus 5400.3 PATA Product Manual, Rev. C
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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 ST9160821A, ST9120822A, ST9100828A, ST980815A, ST960815A, and ST940815A 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 for 160 and 120 Gbyte models
Drive specification ST9160821A ST9120822A
Formatted Gbytes (512 bytes/sector)* 160 120 Guaranteed sectors 312,581,808 234,441,648 Bytes per sector 512 Physical read/write heads 4 3 Discs 2 Cache (Mbytes) 8 Recording density, BPI (bits/inch typical) 835k Track density, TPI (tracks/inch typical) 150k Areal density (Gbits/inch2 max) 132 Spindle speed (RPM) 5,400 Internal data transfer rate (Mbits/sec max) 352 I/O data-transfer rate (Mbytes/sec max) 100
ATA data-transfer modes supported
Height 9.5 +/-0.2 mm (0.374 +/-.008 inches) Width 69.85 +/-0.25 mm (2.750 +/-0.010 inches) Length 100.50 +/-0.25 mm (3.957 +/-0.010 inches) Weight (typical) 102 grams (0.22 lb) Average latency (msec) 5.6 Power-on to ready (sec typical) 3.0 Standby to ready (sec typical) 3.0 Track-to-track seek time (msec typical) 1.0 (read), 1.5 (write) Average random seek , write (msec typical) 13.0 Average random seek, read (msec typical) 11.0 Average random seek, (msec typical) 12.5 Full-stroke seek (msec) 22 (typical); 24 (max) Startup current 5V (typical) 1.0 amps
PIO modes 0–4 Multiword DMA modes 0–2 Ultra DMA modes 0–5
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Momentus 5400.3 PATA Product Manual, Rev. C
Table 1: Specifications for 160 and 120 Gbyte models
Drive specification ST9160821A ST9120822A
Seek power (typical) 2.0 watts Read/write power (typical) Read: 2.0 watts; Write: 1.8 watts Idle mode (typical, low power) 0.8 watts Standby mode 0.2 watts (typical)*** Sleep mode 0.2 watts (typical)*** Voltage tolerance (including noise) 5V ± 5% Ambient temperature 0° to 60°C (operating), –40° to 70°C (nonoperating) Temperature gradient
(°C per hour max, noncondensing) Relative humidity
(noncondensing) Relative humidity gradient 30% per hour max Wet bulb temperature (°C max) 30°C (operating)
Altitude, operating –304.8 m to 3,048 m (–1000 ft to 10,000 ft) Altitude, nonoperating (below mean sea level) –304.8 m to 12,192 m (–1,000 ft to 40,000 ft) max Shock, operating (Gs max at 2 msec) 350 Shock, nonoperating (Gs max at 2 msec) 800 Shock, nonoperating (Gs max at 1 msec) 900 Shock, nonoperating (Gs max at 0.5 msec) 400 Vibration, operating (max displacement may apply below 10 hz) 1.0 Gs (0 to peak, 5–500 Hz) Vibration, nonoperating (max displacement may apply below 22 hz) 5.0 Gs (0 to peak, 5–500 Hz) Drive acoustics, sound power (bels), 2 disc
Idle**
Performance seek Nonrecoverable read errors 1 per 1014 bits read
Annualized Failure Rate (AFR) <0.60% Load/Unload (U/UL) cycles
25°C, 50% relative humidity
32°C, 80% relative humidity 5°C, 80% relative humidity 5°C, 20% relative humidity 60°C, 20% relative humidity
Warranty
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**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 dr ive when ente ring S3 and S4; while in the S3 and S4 state s, drive sleep and drive standby
modes will not contribute to battery power consumption.
20°C (operating) 30°C (nonoperating)
5% to 90% (operating) 5% to 95% (nonoperating)
38°C (nonoperating)
2.4 (typical)
2.6 (max)
3.0 (typical)
3.2 (max)
600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles
600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles
5 years on distribution units. To determine the warranty for a specific drive, use a web browser to access the following web page: www.seagate.com/support/service/ From this page, click on the “V eri fy Your War ranty” link. You will be asked to provide the drive serial number, model number (or part number) and country of purchase. The system will display the warranty information for your drive.
Momentus 5400.3 PATA Product Manual, Rev. C
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Table 1: Specifications for 100 and 80 Gbyte models
Drive specification ST9100828A ST980815A
Formatted Gbytes (512 bytes/sector)* 100 80 Guaranteed sectors 195,371,568 156,301,488 Bytes per sector 512 Physical read/write heads 3 2 Discs 2 1 Cache (Mbytes) 8 Recording density, BPI (bits/inch typical) 835k Track density, TPI (tracks/inch typical) 150k Areal density (Gbits/inch2 max) 132 Spindle speed (RPM) 5,400 Internal data transfer rate (Mbits/sec max) 352 I/O data-transfer rate (Mbytes/sec max) 100
ATA data-transfer modes supported
Height 9.5 +/-0.2 mm (0.374 +/-.008 inches) Width 69.85 +/-0.25 mm (2.750 +/-0.010 inches) Length 100.50 +/-0.25 mm (3.957 +/-0.010 inches) Weight (typical) 102 grams (0.22 lb) 98 grams (0.216 lb) Average latency (msec) 5.6 Power-on to ready (sec typical) 3.0 Standby to ready (sec typical) 3.0 Track-to-track seek time (msec typical) 1.0 (read), 1.5 (write) Average random seek , write (msec typical) 13.0 Average random seek, read (msec typical) 11.0 Average random seek, (msec typical) 12.5 Full-stroke seek (msec) 22 (typical); 24 (max) Startup current 5V (typical) 1.0 amps Seek power (typical) 2.0 watts Read/write power (typical) Read: 2.0 watts; Write: 1.8 watts Idle mode (typical, low power) 0.8 watts Standby mode 0.2 watts (typical)*** Sleep mode 0.2 watts (typical)*** Voltage tolerance (including noise) 5V ± 5% Ambient temperature 0° to 60°C (operating), –40° to 70°C (nonoperating) Temperature gradient
(°C per hour max, noncondensing) Relative humidity
(noncondensing) Relative humidity gradient 30% per hour max Wet bulb temperature (°C max) 30°C (operating)
Altitude, operating –304.8 m to 3,048 m (–1000 ft to 10,000 ft) Altitude, nonoperating (below mean sea level) –304.8 m to 12,192 m (–1,000 ft to 40,000 ft) max Shock, operating (Gs max at 2 msec) 350 Shock, nonoperating (Gs max at 2 msec) 800
PIO modes 0–4 Multiword DMA modes 0–2 Ultra DMA modes 0–5
20°C (operating) 30°C (nonoperating)
5% to 90% (operating) 5% to 95% (nonoperating)
38°C (nonoperating)
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Momentus 5400.3 PATA Product Manual, Rev. C
Table 1: Specifications for 100 and 80 Gbyte models
Drive specification ST9100828A ST980815A
Shock, nonoperating (Gs max at 1 msec) 900 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), 2 disc
Idle**
Performance seek Nonrecoverable read errors 1 per 1014 bits read
Annualized Failure Rate (AFR) 0.60% Load/Unload (U/UL) cycles
25°C, 50% relative humidity
32°C, 80% relative humidity 5°C, 80% relative humidity 5°C, 20% relative humidity 60°C, 20% relative humidity
Warranty
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**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 dr ive when ente ring S3 and S4; while in the S3 and S4 state s, drive sleep and drive standby modes will not contribute to battery power consumption.
1.0 Gs (0 to peak, 5–500 Hz)
5.0 Gs (0 to peak, 5–500 Hz)
2.4 (typical)
2.6 (max)
2.9 (typical)
3.1 (max)
600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles
600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles
5 years on distribution units. T o determine the warranty for a specific drive, use a web browser to access the following web page: www.seagate.com/support/service/ From this page, click on the “Verify Your Warranty” link. You will be asked to provide the drive serial number, model number (or part number) and country of purchase. The system will display the warranty information for your drive.
Momentus 5400.3 PATA Product Manual, Rev. C
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Table 1: Specifications for 60 and 40 Gbyte models
Drive specification ST960815A ST940815A
Formatted Gbytes (512 bytes/sector)* 60 40 Guaranteed sectors 117,410,240 78,140,160 Bytes per sector 512 Physical read/write heads 2 1 Discs 1 Cache (Mbytes) 8 Recording density, BPI (bits/inch typical) 835k Track density, TPI (tracks/inch typical) 150k Areal density (Gbits/inch2 max) 132 Spindle speed (RPM) 5,400 Internal data transfer rate (Mbits/sec max) 352 I/O data-transfer rate (Mbytes/sec max) 100
ATA data-transfer modes supported
Height 9.5 +/-0.2 mm (0.374 +/-.008 inches) Width 69.85 +/-0.25 mm (2.750 +/-0.010 inches) Length 100.50 +/-0.25 mm (3.957 +/-0.010 inches) Weight (typical) 98 grams (0.216 lb) Average latency (msec) 5.6 Power-on to ready (sec typical) 3.0 Standby to ready (sec typical) 3.0 Track-to-track seek time (msec typical) 1.0 (read), 1.5 (write) Average random seek , write (msec typical) 13.0 Average random seek, read (msec typical) 11.0 Average random seek, (msec typical) 12.5 Full-stroke seek (msec) 22 (typical); 24 (max) Startup current 5V (typical) 1.0 amps Seek power (typical) 2.0 watts Read/write power (typical) Read: 2.0 watts; Write: 1.8 watts Idle mode (typical, low power) 0.8 watts Standby mode 0.2 watts (typical)*** Sleep mode 0.2 watts (typical)*** Voltage tolerance (including noise) 5V ± 5% Ambient temperature 0° to 60°C (operating), –32° to 70°C (nonoperating) Temperature gradient
(°C per hour max, noncondensing) Relative humidity
(noncondensing) Relative humidity gradient 30% per hour max Wet bulb temperature (°C max) 30°C (operating)
Altitude, operating –304.8 m to 3,048 m (–1000 ft to 10,000 ft) Altitude, nonoperating (below mean sea level) –304.8 m to 12,192 m (–1,000 ft to 40,000 ft) max Shock, operating (Gs max at 2 msec) 350 Shock, nonoperating (Gs max at 2 msec) 800
PIO modes 0–4 Multiword DMA modes 0–2 Ultra DMA modes 0–5
20°C (operating) 30°C (nonoperating)
5% to 90% (operating) 5% to 95% (nonoperating)
38°C (nonoperating)
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Momentus 5400.3 PATA Product Manual, Rev. C
Table 1: Specifications for 60 and 40 Gbyte models
Drive specification ST960815A ST940815A
Shock, nonoperating (Gs max at 1 msec) 900 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), 2 disc
Idle**
Performance seek Nonrecoverable read errors 1 per 1014 bits read
Annualized Failure Rate (AFR) <0.60% Load/Unload (U/UL) cycles
25°C, 50% relative humidity
32°C, 80% relative humidity 5°C, 80% relative humidity 5°C, 20% relative humidity 60°C, 20% relative humidity
Warranty
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**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 th e drive when ente ring S3 and S4; while in the S3 and S4 states, dr ive sleep and drive standby
modes will not contribute to battery power consumption.
1.0 Gs (0 to peak, 5–500 Hz)
5.0 Gs (0 to peak, 5–500 Hz)
2.4 (typical)
2.6 (max)
2.9 (typical)
3.1 (max)
600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles
600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles
5 years on distribution units. To determine the warranty for a specific drive, use a web browser to access the following web page: www.seagate.com/support/service/ From this page, click on the “Verify Your Warranty” link. You will be asked to provide the drive serial number, model num­ber (or part number) and country of purchase. The system will display the warranty information for your drive.
Momentus 5400.3 PATA Product Manual, Rev. C
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2.2 Formatted capacity

Model Formatted capacity* Guaranteed sectors Bytes per sector
ST9160821A 160 Gbytes 312,581,808 512 ST9120822A 120 Gbytes 234,441,648 512 ST9100828A 100 Gbytes 195,371,568 512 ST980815A 80 Gbytes 156,301,488 512 ST960815A 60 Gbytes 117,410,240 512 ST940815A 40 Gbytes 78,140,160 512
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating en viron ment
and formatting.

2.3 Default logi cal 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
ST9160821A 4 2 ST9120822A 3 2 ST9100828A 3 2 ST980815A 2 1 ST960815A 2 1 ST940815A 1 1
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