seagate ST3500641, AVST3250824AV User manual

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Product Manual
SV35 Series PATA
ST3500641AV
ST3250824AV
ST3160812AV
100415205 Rev. C October 2007
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Revision history
Revision Date Sheets affected or comments
Rev. A 04/25/06 Initial release. Rev. B 08/23/07 1. Rev. C 10/01/07 4, 8, 10 and 18.
Copyright © 2006-2007 Seagate Technology LLC. All rights reserved. Printed in USA
October 2007
Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. SV35 Series, SeaTools and SeaTDD are either trademarks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/or other countries. All other trademarks or registered trademarks are the property of their respective owners.
One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. Seagate reserves the right to change, with out notice, product offerings or specifications.
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Contents
1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Specification summaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.1 LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.4 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.6 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.7 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.8 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.8.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.8.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.8.3 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.8.4 Power-management modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.9 Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.9.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.9.2 Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.9.3 Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.9.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.9.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.9.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.10 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.11 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.12 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.13 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.13.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.13.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.13.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.14 Environmental protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.14.1 European Union Restriction of Hazardous Substances (RoHS) . . . . . . . . . . . . 21
2.15 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.1 Handling and static discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.2 Breather filter hole precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.3 Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.3.1 Master/slave configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.3.2 Cable-select option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.3.3 Alternate capacity jumper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.3.4 Ultra ATA/100 cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.1 ATA interface signals and connector pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.1.1 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.1.2 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.1.3 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.1.4 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.1.5 Streaming feature set support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
SV35 Series Product Manual, Rev. C i
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ii SV35 Series Product Manual, Rev. C
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List of Figures
Figure 1. Typical 5V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 2. Typical 12V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 3. Breather filter hole location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 4. Master/slave jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 5. Ultra ATA cable connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 6. Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 7. I/O pins and supported ATA signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
SV35 Series Product Manual, Rev. C iii
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iv SV35 Series Product Manual, Rev. C
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1.0 Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate® SV35 model drives:
• ST3500641AV
• ST3250824AV
• ST3160812AV
These drives provide the following key features:
• Specifically designed for surveillance DVRs. Supports a subset of the ATA/ATAPI-7, Rev. 3e ATA Streaming Command Feature set.
• Optimized power for surveillance systems--spinup current limited to a maximum of 2.0 amps.
• Seek profile optimized for surveillance performance and power consumption.
• 7,200-RPM spindle speed.
• 16-Mbyte buffer: ST3500641AV.
• 8-Mbyte buffer: ST3250824AV and ST3160812AV.
• 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.
• 350 Gs nonoperating shock.
• 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).
• 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.
See Section 4.1.5 on page 39 for additional information about Streaming features.
SV35 Series Product Manual, Rev. C 1
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2 SV35 Series 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 the following models:
ST3500641AV ST3250824AV ST3160812AV

2.1 Specification summaries

The specifications listed in the following three tables are for quick reference. For details on specification mea­surement or definition, see the appropriate section of this manual.
SV35 Series Product Manual, Rev. C 3
Page 10
Table 1: Drive specifications for 500 Gbyte model
Drive specification ST3500641AV
Formatted Gbytes (512 bytes/sector)* 500
Guaranteed sectors 976,773,168
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Recording density, KBPI (kbits/in max) 790.1
Track density, KTPI (ktracks/in max) 124.5
Areal density, (Gbits/in2 max) 97.96
Spindle speed (RPM) 7,200
Internal data transfer rate (Mbits/sec max) 815.2
Sustained data transfer rate (Mbytes/sec max) 65.0
I/O data-transfer rate (Mbytes/sec max) 100
ATA data-transfer modes supported PIO modes 0–4
Cache buffer 16 Mbytes
Height (mm max) 26.1 mm (1.028 inches)
Width (mm max) 101.6 mm (4.000 inches) +/- 0.010 inches
Length (mm max) 146.99 mm (5.787 inches)
Weight (typical) 710 grams (1.57 lb.)
Average latency (msec) 4.16
Power-on to ready (sec max) 16 sec
Standby to ready (sec max) 16 sec
Track-to-track seek time (msec typical) <0.8 (read), <1.0 (write)
Average seek (msec typical) 18 (read), 20 (write)
Startup current (typical) 12V (peak) 2.0 amps
Seek power (typical) 8.6 watts
DVR Operating (typical) 7.47 watts
Idle mode (typical) 6.90 watts
Standby mode (typical) 0.80 watts
Sleep mode (typical) 0.80 watts
Voltage tolerance (including noise) 5V ± 5%
Ambient temperature 0° to 60°C (operating)
Temperature gradient (°C per hour max) 20°C (operating)
Relative humidity 5% to 90% (operating)
Relative humidity gradient 30% per hour max
Wet bulb temperature (°C max) 37.7 (operating)
Altitude, operating –60.96 m to 3,048 m
Altitude, nonoperating (below mean sea level, max) –60.96 m to 12,192 m
Operational Shock (max at 2 msec) 63 Gs
Multiword DMA modes 0–2 Ultra DMA modes 0–5
12V ± 10%
–40° to 70°C (nonoperating)
30°C (nonoperating)
5% to 95% (nonoperating)
40.0 (nonoperating)
(–200 ft. to 10,000+ ft.)
(–200 ft. to 40,000+ ft.)
4 SV35 Series Product Manual, Rev. C
Page 11
Drive specification ST3500641AV
Non-Operational Shock (max at 2 msec) 300 Gs
Vibration, operating 5-22 Hz: +/-0.25”, Displacement limited
Vibration, nonoperating 5-22 Hz: +/-0.25”, Displacement limited
Drive acoustics, sound power
Idle** (bels) 2.79 (typical)
Operational, DVR seeks (bels) 2.71 (typical)
Nonrecoverable read errors 1 per 10
Annualized Failure Rate (AFR) <1%
Warranty 5 years on distribution units.
Contact start-stop cycles (25°C, 50% rel. humidity) 50,000
*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.
22-350 Hz: 0.5 Gs 350-500 Hz: 0.25 Gs
22-350 Hz: 5.0 Gs 350-500 Hz: 1.0 Gs
2.96 (max)
2.88 (max)
14
bits read
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 war ranty information for your drive.
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SV35 Series Product Manual, Rev. C 5
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Table 2: Drive specifications for 250 Gbyte model
Drive specification ST3250824AV
Formatted Gbytes (512 bytes/sector)* 250
Guaranteed sectors 488,397,168
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Recording density, KBPI (kbits/in max) 790.1
Track density, KTPI (ktracks/in max) 124.5
Areal density, (Gbits/in2 max) 97.69
Spindle speed (RPM) 7,200
Internal data transfer rate (Mbits/sec max) 867.2
Sustained data transfer rate (Mbytes/sec max) 76.6
I/O data-transfer rate (Mbytes/sec max) 100
ATA data-transfer modes supported PIO modes 0–4
Cache buffer 8 Mbytes
Height (mm max) 26.1 mm (1.028 inches)
Width (mm max) 101.6 mm (4.000 inches) +/- 0.010 inches
Length (mm max) 146.99 mm (5.787 inches)
Weight (typical) 580 grams (1.28 lb.)
Average latency (msec) 4.16
Power-on to ready (sec max) 16 sec
Standby to ready (sec max) 16 sec
Track-to-track seek time (msec typical) <0.8 (read), <1.0 (write)
Average seek (msec typical) 18 (read), 20 (write)
Startup current (typical) 12V (peak) 2.0 amps
Seek power (typical) 8.6 watts
DVR Operating (typical) 6.50 watts
Idle mode (typical) 8.00 watts
Standby mode (typical) 0.80 watts
Sleep mode (typical) 0.80 watts
Voltage tolerance (including noise) 5V ± 5%
Ambient temperature 0° to 60°C (operating)
Temperature gradient (°C per hour max) 20°C (operating)
Relative humidity 5% to 90% (operating)
Relative humidity gradient 30% per hour max
Wet bulb temperature (°C max) 37.7 (operating)
Altitude, operating –60.96 m to 3,048 m
Altitude, nonoperating (below mean sea level, max) –60.96 m to 12,192 m
Operational Shock (max at 2 msec) 63 Gs
Multiword DMA modes 0–2 Ultra DMA modes 0–5
12V ± 10%
–40° to 70°C (nonoperating)
30°C (nonoperating)
5% to 95% (nonoperating)
40 (nonoperating)
(–200 ft. to 10,000+ ft.)
(–200 ft. to 40,000+ ft.)
6 SV35 Series Product Manual, Rev. C
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Drive specification ST3250824AV
Non-Operational Shock (max at 2 msec) 350 Gs
Vibration, operating 5-22 Hz: 0.25 Gs, Limited displacement
Vibration, nonoperating 5–22 Hz: 0.25 Gs, Limited displacement
Drive acoustics, sound power
Idle* (bels) 2.67 (typical)
Operational, DVR seeks (bels) 2.68 (typical)
Nonrecoverable read errors 1 per 10
Annualized Failure Rate (AFR) <1%
Warranty 5 years on distribution units.
Contact start-stop cycles (25°C, 50% rel. humidity) 50,000
*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.
22-350 Hz: 0.5 Gs 350-500 Hz: 0.25 Gs
22-350 Hz: 5.0 Gs 350-500 Hz: 1.0 Gs
2.82 (max)
2.80 (max)
14
bits read
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.
SV35 Series Product Manual, Rev. C 7
Page 14
Table 3: Drive specifications for 160 Gbyte model
Drive specification ST3160812AV
Formatted Gbytes (512 bytes/sector)* 160
Guaranteed sectors 312,581,808
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Recording density, KBPI (kbits/in max) 840.0
Track density, KTPI (ktracks/in max) 141.5
Areal density, (Gbits/in2 max) 119.0
Spindle speed (RPM) 7,200
Internal data transfer rate (Mbits/sec max) 867.2
Sustained data transfer rate (Mbytes/sec max) 83.0
I/O data-transfer rate (Mbytes/sec max) 100
ATA data-transfer modes supported PIO modes 0–4
Cache buffer 8 Mbytes
Height (mm max) 26.1 mm (1.028 inches)
Width (mm max) 101.6 mm (4.000 inches) +/- 0.010 inches
Length (mm max) 146.99 mm (5.787 inches)
Weight (typical) 580 grams (1.28 lb.)
Average latency (msec) 4.16
Power-on to ready (sec max) 16 sec
Standby to ready (sec max) 16 sec
Track-to-track seek time (msec typical) <0.8 (read), <1.0 (write)
Average seek (msec typical) 18 (read), 20 (write)
Startup current (typical) 12V (peak) 2.0 amps
Seek power (typical) 8.6 watts
DVR Operating (typical) 5.71 watts
Idle mode (typical) 8.00 watts
Standby mode (typical) 0.80 watts
Sleep mode (typical) 0.80 watts
Voltage tolerance (including noise) 5V ± 5%
Ambient temperature 0° to 60°C (operating)
Temperature gradient (°C per hour max) 20°C (operating)
Relative humidity 5% to 90% (operating)
Relative humidity gradient 30% per hour max
Wet bulb temperature (°C max) 37.7 (operating)
Altitude, operating –60.96 m to 3,048 m
Altitude, nonoperating (below mean sea level, max) –60.96 m to 12,192 m
Operational Shock (max at 2 msec) 63 Gs
Multiword DMA modes 0–2 Ultra DMA modes 0–5
12V ± 10%
–40° to 70°C (nonoperating)
30°C (nonoperating)
5% to 95% (nonoperating)
40 (nonoperating)
(–200 ft. to 10,000+ ft.)
(–200 ft. to 40,000+ ft.)
8 SV35 Series Product Manual, Rev. C
Page 15
Drive specification ST3160812AV
Non-Operational Shock (max at 2 msec) 350 Gs
Vibration, operating 5-22 Hz: +/-0.25”, Displacement limited
Vibration, nonoperating 5-22 Hz: +/-0.25”, Displacement limited
Drive acoustics, sound power
Idle** (bels) 2.48 (typical)
Operational, DVR seeks (bels) 2.8 (typical)
Nonrecoverable read errors 1 per 10
Annualized Failure Rate (AFR) <1%
Warranty 5 years on distribution units.
Contact start-stop cycles (25°C, 50% rel. humidity) 50,000
*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.
22-350 Hz: 0.5 Gs 350-500 Hz: 0.25 Gs
22-350 Hz: 5.0 Gs 350-500 Hz: 1.0 Gs
2.64 (max)
2.9 (max)
14
bits read
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.
SV35 Series Product Manual, Rev. C 9
Page 16

2.2 Formatted capacity

Model
ST3500641AV 500 Gbytes 976,773,168 512
ST3250824AV 250 Gbytes 488,397,168 512
ST3160812AV 160 Gbytes 312,581,808 512
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
Formatted capacity*
Guaranteed sectors
Bytes per sector

2.2.1 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.
See Section 4.1.2, "Identify Device command" (words 60-61 and 100-103) for additional information about 48­bit addressing support of drives with capacities over 137 Gbytes.

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.
10 SV35 Series Product Manual, Rev. C
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2.4 Recording and interface technology

Interface ATA
Recording method 16/17 EPRML
Recording density KBPI (kbits/inch max)
ST3500641AV and ST3250824AV 790.1
ST3160812AV 840.0
Track density KTPI (ktracks/inch max)
ST3500641AV and ST3250824AV 124.5
ST3160812AV 141.5
Areal density (Gbits/inch2 max)
ST3500641AV and ST3250824AV 97.69
ST3160812AV 119.0
Spindle speed (RPM) (± 0.2%) 7,200
Internal data-transfer rate (Mbits/sec max)
ST3500641AV 815.2
ST3250824AV and ST3160812AV 867.2
Sustained data transfer rate (Mbytes/sec max)
ST3500641AV 65.0
ST3250824AV 76.6
ST3160812AV 83.0
I/O data-transfer rate (Mbytes/sec max) 100 (Ultra DMA mode 5)
Cache buffer
ST3500641AV ST3250824AV and ST3160812AV
16 MBytes (16,384 kbytes) 8 Mbytes (8,192 kbytes)
SV35 Series Product Manual, Rev. C 11
Page 18

2.5 Physical characteristics

Drive specification
Maximum height
(mm) (inches)
26.1
1.028
Maximum width
Maximum length
Typical weight
(mm) (inches)
(mm) (inches)
ST3500641AV
ST3250824AV ST3160812AV
101.6
4.000 ± 0.010
146.99
5.787
710 grams (1.57 lbs)
580 grams (1.28 lbs)

2.6 Seek time

Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications in the table below are defined as follows:
• Track-to-track seek time is an average of all possible single-track seeks in both directions.
• Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead.
Typical seek times (msec) Read Write
Track-to-track 0.8 1.0
Average 18 20
Average latency: 4.16 4.16
Note. These drives are designed to consistently meet the seek times represented in this manual. Physical seeks,
regardless of mode (such as track-to-track and average), are expected to meet or exceed the noted values. However, due to the manner in which these drives are formatted, benchmark tests that include command overhead or measure logical seeks may produce results that vary from these specifications.

2.7 Start/stop times

Power-on to Ready (sec) 16
Standby to Ready (sec) 16 (max)
Ready to spindle stop (sec) 10 (max)
12 SV35 Series Product Manual, Rev. C
Page 19

2.8 Power specifications

The drive receives DC power (+5V and +12V) through a four-pin standard drive power connector.

2.8.1 Power consumption

Power requirements for the drives are listed in the table on page 13. Typical power measurements are based on an average of drives tested, under nominal conditions, using +5.0V and +12.0V input voltage at 25°C ambi­ent temperature.
• Spinup power
Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.
• Seek mode
During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and does not execute a read or write operation. Servo electronics are active. Seek mode power represents the worst­case power consumption, using only random seeks with read or write latency time. This mode is not typical and is provided for worst-case information.
• Operating power and current
Operating power is measured using a standard Surveillance Storage Profile.
• Idle mode power
Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location.
• Standby mode
During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/ write electronics are in power-down mode.
Table 4: DC power requirements
Power dissipation (watts) Example: ST3500641AV
Spinup 2.0 (peak)
Idle 6.9 0.353 0.519
Operating (DVR Storage Profile) 7.47 .295 .5
Seeking 8.6 .318 .585
Standby 0.80 0.106 0.023
Sleep 0.80 0.106 0.023
Average (watts, 25° C)
5V typ amps
12V typ amps
SV35 Series Product Manual, Rev. C 13
Page 20
2.8.1.1 Typical current profile
Figure 1 Typical 5V startup and operation current profile
Figure 2 Typical 12V startup and operation current profile

2.8.2 Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the +12 volt line or an equivalent 15-ohm resistive load on the +5 volt line.
• Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave injected noise at up to 10 MHz.
• Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave injected noise at up to 10 MHz.
Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write
current.

2.8.3 Voltage tolerance

Voltage tolerance (including noise):
5V ± 5% 12V ± 10%
14 SV35 Series Product Manual, Rev. C
Page 21

2.8.4 Power-management modes

The drive provides programmable power management to provide greater energy efficiency. In most systems, you can control power management through the system setup program. The drive features the following power-management modes:
Power mode Heads Spindle Buffer
Active Tracking Rotating Enabled
Idle Tracking Rotating Enabled
Standby Parked Stopped Enabled
Sleep Parked Stopped Disabled
• Active mode
The drive is in Active mode during the read/write and seek operations.
• Idle mode
The buffer remains enabled, and the drive accepts all commands and returns to Active mode any time disc access is necessary.
• Standby mode
The drive enters Standby mode when the host sends a Standby Immediate command. If the host has set the standby timer, the drive can also enter Standby mode automatically after the drive has been inactive for a specifiable length of time. The standby timer delay is established using a Standby or Idle command. In Standby mode, the drive buffer is enabled, the heads are parked and the spindle is at rest. The drive accepts all commands and returns to Active mode any time disc access is necessary.
•Sleep mode
The drive enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the drive buffer is disabled, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it receives a Hard Reset or Soft Reset from the host. After receiving a reset, the drive exits Sleep mode and enters Standby mode with all current translation parameters intact.
• Idle and Standby timers
Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and begins counting down from its specified delay times to zero. If the standby timer reaches zero before any drive activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the drive accepts all commands and returns to Active mode when disc access is necessary.
SV35 Series Product Manual, Rev. C 15
Page 22

2.9 Environmental specifications

2.9.1 Ambient temperature

Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual drive case temperature should not exceed standard models. Recommended measurement locations are shown in See Figure 6 on page 27.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 44°C (112°F) at 10,000 feet (3,048 meters).
Operating: 0° to 60°C (32° to 140°F)
Nonoperating: –40° to 70°C (–40° to 158°F)

2.9.2 Temperature gradient

Operating: 20°C per hour (68°F per hour max), without condensation
Nonoperating: 30°C per hour (86°F per hour max)

2.9.3 Humidity

69°C (156°F) within the operating ambient conditions for
2.9.3.1 Relative humidity
Operating: 5% to 90% noncondensing (30% per hour max)
Nonoperating: 5% to 95% noncondensing (30% per hour max)
2.9.3.2 Wet bulb temperature
Operating: 37.7°C (99.9°F max)
Nonoperating: 40°C (104°F max)

2.9.4 Altitude

Operating: –60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)
Nonoperating: –60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)
16 SV35 Series Product Manual, Rev. C
Page 23

2.9.5 Shock

All shock specifications assume that the drive is mounted securely with the input shock applied at the drive mounting screws. Shock may be applied in the X, Y or Z axis.
2.9.5.1 Operating shock
These drives comply with the performance levels specified in this document when subjected to a maximum operating shock of 63 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more than two times per second.
2.9.5.2 Nonoperating shock
The nonoperating shock level that the drive can experience without incurring physical damage or degradation in performance when subsequently put into operation is 300 Gs for 500 GB drives and 350 Gs for 250 and 160 GB drives, based on a nonrepetitive half-sine shock pulse of 2 msec duration.

2.9.6 Vibration

All vibration specifications assume that the drive is mounted securely with the input vibration applied at the drive mounting screws. Vibration may be applied in the X, Y or Z axis.
2.9.6.1 Operating vibration
The following table lists the maximum vibration levels that the drive may experience while meeting the perfor­mance standards specified in this document.
5–22 Hz +/-0.25”, Displacement limited
22–350 Hz 0.50 Gs
350–500 Hz 0.25 Gs
2.9.6.2 Nonoperating vibration
The following table lists the maximum nonoperating vibration that the drive may experience without incurring physical damage or degradation in performance when subsequently put into operation.
5–22 Hz 0.25 Gs (Limited displacement)
22–350 Hz 5.0 Gs
350–500 Hz 1.0 Gs
SV35 Series Product Manual, Rev. C 17
Page 24

2.10 Acoustics

Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All mea­surements are consistent with ISO document 7779. Sound power measurements are taken under essentially free-field conditions over a reflecting plane. For all tests, the drive is oriented with the cover facing upward.
Note. For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is defined
by the following equation:
(Number of seeks per second = 0.4 / (average latency + average access time)
Drive acoustics, sound power
Model Idle Operational, DVR (Digital Video Recorder) seeks
ST3500641AV 2.79 bels (typ)
2.96 bels (max)
ST3250824AV 2.67 bels (typ)
2.82 bels (max)
ST3160812AV 2.48 bels (typ)
2.64 bels (max)
2.71 bels (typ)
2.88 bels (max)
2.68 bels (typ)
2.80 bels (max)
2.80 bels (typ)
2.90 bels (max)
18 SV35 Series Product Manual, Rev. C
Page 25

2.11 Electromagnetic immunity

When properly installed in a representative host system, the drive operates without errors or degradation in performance when subjected to the radio frequency (RF) environments defined in the following table:
Table 5: Radio frequency environments
Test Description
Electrostatic discharge Contact, HCP, VCP: ± 4 kV; Air:
± 8 kV
Radiated RF immunity 80 to 1,000 MHz, 3 V/m,
80% AM with 1 kHz sine 900 MHz, 3 V/m, 50% pulse modulation @ 200 Hz
Electrical fast transient ± 1 kV on AC mains, ± 0.5 kV on
external I/O
Surge immunity ± 1 kV differential, ± 2 kV com-
mon, AC mains
Conducted RF immunity 150 kHz to 80 MHz, 3 Vrms,
80% AM with 1 kHz sine
Voltage dips, interrupts 0% open, 5 seconds
0% short, 5 seconds 40%, 0.10 seconds 70%, 0.01 seconds

2.12 Reliability

Performance level
B EN 61000-4-2: 95
A EN 61000-4-3: 96
B EN 61000-4-4: 95
B EN 61000-4-5: 95
A EN 61000-4-6: 97
C C C B
Reference standard
ENV 50204: 95
EN 61000-4-11: 94
Nonrecoverable read errors 1 per 1014 bits read, max.
Annualized Failure Rate (AFR) <1% (nominal power, 8760 power on hours, 25°C ambient temperature)
Contact start-stop cycles 50,000 cycles
(at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle)
Preventive maintenance None required
SV35 Series Product Manual, Rev. C 19
Page 26

2.13 Agency certification

2.13.1 Safety certification

The drives are recognized in accordance with UL 1950 and CSA C22.2 (950) and meet all applicable sections of IEC950 and EN 60950 as tested by TUV North America.

2.13.2 Electromagnetic compatibility

Hard drives that display the CE mark comply with the European Union (EU) requirements specified in the Elec­tromagnetic Compatibility Directive (89/336/EEC). Testing is performed to the levels specified by the product standards for Information Technology Equipment (ITE). Emission levels are defined by EN 55022, Class B and the immunity levels are defined by EN 55024.
Seagate uses an independent laboratory to confirm compliance with the EC directives specified in the previous paragraph. Drives are tested in representative end-user systems. Although CE-marked Seagate drives comply with the directives when used in the test systems, we cannot guarantee that all systems will comply with the directives. The drive is designed for operation inside a properly designed enclosure, with properly shielded I/O cable (if necessary) and terminators on all unused I/O ports. Computer manufacturers and system integrators should confirm EMC compliance and provide CE marking for their products.
Korean RRL
If these drives have the Korea Ministry of Information and Communication (MIC) logo, they comply with para­graph 1 of Article 11 of the Electromagnetic Compatibility control Regulation and meet the Electromagnetic Compatibility (EMC) Framework requirements of the Radio Research Laboratory (RRL) Ministry of Information and Communication Republic of Korea.
These drives have been tested and comply with the Electromagnetic Interference/Electromagnetic Susceptibil­ity (EMI/EMS) for Class B products. Drives are tested in a representative, end-user system by a Korean-recog­nized lab.
• EUT name (model numbers): See table below.
• Certificate numbers:
Model Certificate Number
ST3500641AV E-H011-05-3453 (B)
ST3250824AV E-H011-05-3453 (B)
ST3160812AV E-H011-05-3453 (B)
• Trade name or applicant: Seagate Technology
• Manufacturing date: March 2006
• Manufacturer/nationality: Singapore and China
Australian C-Tick (N176)
If these models have the C-Tick marking, they comply with the Australia/New Zealand Standard AS/NZS3548 1995 and meet the Electromagnetic Compatibility (EMC) Framework requirements of the Australian Communi­cation Authority (ACA).

2.13.3 FCC verification

These drives are intended to be contained solely within a personal computer or similar enclosure (not attached as an external device). As such, each drive is considered to be a subassembly even when it is individually mar­keted to the customer. As a subassembly, no Federal Communications Commission verification or certification of the device is required.
20 SV35 Series Product Manual, Rev. C
Page 27
Seagate Technology LLC has tested this device in enclosures as described above to ensure that the total assembly (enclosure, disc drive, motherboard, power supply, etc.) does comply with the limits for a Class B computing device, pursuant to Subpart J, Part 15 of the FCC rules. Operation with noncertified assemblies is likely to result in interference to radio and television reception.
Radio and television interference. This equipment generates and uses radio frequency energy and if not installed and used in strict accordance with the manufacturer’s instructions, may cause interference to radio and television reception.
This equipment is designed to provide reasonable protection against such interference in a residential installa­tion. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television, which can be determined by turning the equipment on and off, you are encouraged to try one or more of the following corrective measures:
• Reorient the receiving antenna.
• Move the device to one side or the other of the radio or TV.
• Move the device farther away from the radio or TV.
• Plug the computer into a different outlet so that the receiver and computer are on different branch outlets.
If necessary, you should consult your dealer or an experienced radio/television technician for additional sug­gestions. You may find helpful the following booklet prepared by the Federal Communications Commission: How to Identify and Resolve Radio-Television Interference Problems. This booklet is available from the Super­intendent of Documents, U.S. Government Printing Office, Washington, DC 20402. Refer to publication num­ber 004-000-00345-4.

2.14 Environmental protection

Seagate designs its products to meet environmental protection requirements worldwide, including regulations restricting certain chemical substances.

2.14.1 European Union Restriction of Hazardous Substances (RoHS)

The European Union Restriction of Hazardous Substances (RoHS) Directive restricts the presence of chemical substances, including Lead (Pb), in electronic products effective July 2006.
A number of parts and materials in Seagate products are procured from external suppliers. We rely on the rep-resentations of our suppliers regarding the presence of RoHS substances in these parts and materials. Our supplier contracts require compliance with our chemical substance restrictions, and our suppliers document their compliance with our requirements by providing material content declarations for all parts and materials for the disc drives documented in this publication. Current supplier declarations include disclosure of the inclusion of any RoHS-regulated substance in such parts or materials.
Seagate also has internal systems in place to ensure ongoing compliance with the RoHS Directive and all laws and regulations which restrict chemical content in electronic products. These systems include standard operat-ing procedures that ensure that restricted substances are not utilized in our manufacturing operations, labora-tory analytical validation testing, and an internal auditing process to ensure compliance with all standard operating procedures.
SV35 Series Product Manual, Rev. C 21
Page 28

2.15 Corrosive environment

Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to light industrial environments containing sulfurous gases, chlorine and nitric oxide, classes G and H per ASTM B845. However, this accelerated testing cannot duplicate every potential application environment. Users should use caution exposing any electronic components to uncontrolled chemical pollutants and corrosive chemicals as electronic drive component reliability can be affected by the installation environment. The silver, copper, nickel and gold films used in Seagate products are especially sensitive to the presence of sulfide, chlo­ride, and nitrate contaminants. Sulfur is found to be the most damaging. In addition, electronic components should never be exposed to condensing water on the surface of the printed circuit board assembly (PCBA) or exposed to an ambient relative humidity greater than 95%. Materials used in cabinet fabrication, such as vulca­nized rubber, that can outgas corrosive compounds should be minimized or eliminated. The useful life of any electronic equipment may be extended by replacing materials near circuitry with sulfide-free alternatives.
22 SV35 Series Product Manual, Rev. C
Page 29

3.0 Configuring and mounting the drive

This section contains the specifications and instructions for configuring and mounting the drive.

3.1 Handling and static discharge precautions

After unpacking, and before installation, the drive may be exposed to potential handling and electrostatic dis­charge (ESD) hazards. Observe the following standard handling and static-discharge precautions:
Caution:
• Keep the drive in the electrostatic discharge (ESD) bag until you are ready for installation.
• Before handling the drive, put on a grounded wrist strap, or ground yourself frequently by touching the metal chassis of a computer that is plugged into a grounded outlet. Wear a grounded wrist strap throughout the entire installation procedure.
• Handle the drive by its edges or frame only.
• The drive is extremely fragile—handle it with care. Do not press down on the drive top cover.
• Always rest the drive on a padded, antistatic surface until you mount it in the computer.
• Do not touch the connector pins or the printed circuit board.
• Do not remove the factory-installed labels from the drive or cover them with additional labels. Removal voids the warranty. Some factory-installed labels contain information needed to service the drive. Other labels are used to seal out dirt and contamination.
SV35 Series Product Manual, Rev. C 23
Page 30

3.2 Breather filter hole precautions

This section contains information regarding the precautions which should be taken regarding the breather filter hole in Seagate hard disc drives. Proper precautions should be taken to ensure full functionality and prevent possible damage to the drive.
Breather hole
Do not cover or seal this hole.
Figure 3 Breather filter hole location
Caution: Do not cover, seal, or insert any object into this hole.
This hole has two purposes:
• To allow condensation inside the hard disc to escape
• To allow air pressure inside the hard disc to equalize with ambient pressure
Note. If this hole is covered, sealed, or penetrated by any object, drive reliability may be compromised
and could lead to permanent damage—doing so voids the warranty.
24 SV35 Series Product Manual, Rev. C
Page 31

3.3 Jumper settings

3.3.1 Master/slave configuration

The options jumper block shown in Figure 4 is used to configure the drive for operation. It is the 8-pin dual header between the interface connector and the power connector. Use the following settings to configure the drive as a master or a slave.
Master or single drive. The drive is configured at the factory for a master or single-drive operation with a jumper set on pins 7 and 8.
Drive as slave. Remove all jumpers.
Drive as master with a non-ATA-compatible slave.
Use this jumper setting only if the drive does not work as a master with no jumpers installed.
Options jumper block
Master or single drive
Drive is slave
Master with non ATA­compatible slave
Cable select
Limit drive capacity to 32 Gbytes
1753
684
2
Figure 4 Master/slave jumper settings
Circuit Board

3.3.2 Cable-select option

Computers that use cable select determine the master and slave drives by selecting or deselecting pin 28, CSEL, on the interface bus. Master and slave drives are determined by their physical position on the cable. To enable cable select, set a jumper on pins 5 and 6 as shown in Figure 4. Refer to your computer manual to determine whether your computer supports this option.

3.3.3 Alternate capacity jumper

Some older computers may “hang” at startup if their BIOS detects a disc drive with a capacity greater than 32 Gbytes. This limits the drive’s capacity to 32 Gbytes when the alternate capacity jumper is used. To access the full capacity of the drive, you can:
• Update the BIOS
• Use third-party software such as DiscWizard™ or Disk Manager
• Use a third-party host adapter
For drives with capacities greater than 32 Gbytes, the alternate capacity jumper changes the total available LBA sectors to 32 Gbytes to solve issues with some BIOS during power on. The ATA Set Features subcom­mand “F1
Report Full Capacity Available” causes Identify Data words 60 and 61 to report the full capacity.
H
See Section 4.1.3 on page 37 for more details on the Set Features command.
SV35 Series Product Manual, Rev. C 25
Page 32
Windows XP, Windows Me, Windows 98 or newer versions are needed to support drives with capacities greater than 32 Gbytes.

3.3.4 Ultra ATA/100 cable

An 80-conductor 40-pin cable is required to run Ultra DMA mode 3, mode 4 and mode 5. This cable uses even­numbered conductors connected to the ground pins to improve signal integrity.
Note. If you are using a 40-pin, 80-conductor
cable, attach the blue connector to the
Master
Slave
Figure 5 Ultra ATA cable connectors
Pin 1
Computer
Motherboard
motherboard, the black connector to the master drive, and the gray connector to the slave.
Note. The drive supports both host and drive cable detection. The host detects the 80-conductor cable by
sampling pin 34, CBLID–, on the interface bus. The drive detects the 80-conductor cable by sens
­ing a capacitor at the host side through the CBLID– signal. The result is reported in a Fast Rise Detected bit (bit 13 of word 93 in the Identify drive parameter block).

3.4 Drive mounting

You can mount the drive in any orientation using four screws in the side-mounting holes or four screws in the bottom-mounting holes. See Figure 6 for drive mounting dimensions. Follow these important mounting precau­tions when mounting the drive:
• Allow a minimum clearance of 0.030 inches (0.76 mm) around the entire perimeter of the drive for cooling.
• Use only 6-32 UNC mounting screws.
• Do not overtighten the mounting screws (maximum torque: 6 inch-lb.).
• Do not use a drive interface cable that is more than 18 inches long.
26 SV35 Series Product Manual, Rev. C
Page 33
Notes:
1. Dimensions are shown in inches (mm).
2 Dimensions per SFF-8301 specification.
Recommended case temperature measurement location
1.028 max (26.11)
3 x 0.25 0.010 (6.35 0.037) both sides
1.122 0.02 (28.5 0.51)
1.638 0.01
(41.61 0.25)
3 x 6-32 UNC-2B
0.150 (3.81) max. fastener penetration both sides. 3 threads minimum engagement.
2
5.787 max (146.99)
4.0 0.01
(101.60 0.25)
0.228 (5.79)
2.23
(56.56)
2.83
(71.80)
3.71
(94.35)
0.1240 0.01 (3.18 0.25)
3.750 0.01
(95.25 0.25)
4.0 0.01
(101.60 0.25)
0.178 (4.27)
1.625 0.020
(41.28 0.51)
1.75 0.01
(44.45 0.25)
4 x 6-32 UNC-2B
0.150 (3.81) max. fastener penetration. 3 threads minimum engagement.
Recommended case temperature measurement location
Figure 6 Mounting dimensions—top, side and end view
SV35 Series Product Manual, Rev. C 27
Page 34
28 SV35 Series Product Manual, Rev. C
Page 35

4.0 ATA interface

These drives use the industry-standard ATA task file interface that supports 16-bit data transfers. It supports ATA programmed input/output (PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes 0–5. The drive also supports the use of the IORDY signal to provide reliable high-speed data transfers.
You can use a daisy-chain cable to connect two drives to a single AT host bus. For detailed information about the ATA interface, refer to the draft of AT Attachment with Packet Interface Extension (ATA/ATAPI-7), NCITS T13 1410D, subsequently referred to as the Draft ATA-7 Standard.

4.1 ATA interface signals and connector pins

Figure 7 summarizes the signals on the ATA interface connector that the drive supports. For a detailed descrip­tion of these signals, refer to the Draft ATA-7 Standard.
Drive pin #
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
24 25
26 27
28 29 30 31 32 33 34
35 36 37 38 39 40
Pins 28, 34 and 39 are used for master-slave communication (details shown below).
28 34 39
Signal name
Reset Ground
DD7 DD8 DD6 DD9 DD5
DD10
DD4
DD11
DD3
DD12
DD2
DD13
DD1
DD14
DD0
DD15
Ground
(removed)
DMARQ
Ground DIOW–
STOP Ground DIOR
HDMARDY
HSTROBE
Ground IORDY
DDMARDY–
DSTROBE
CSEL
DMACK
Ground INTRQ
IOCS16
DA1
PDIAG CBLID–
DA0 DA2
CS0
CS1
DASP Ground
Drive 0 (master)Drive 1 (slave)
28 34 39
Host pin # and signal description
1
Hardware Reset
2
Ground
3
Host Data Bus Bit 7
4
Host Data Bus Bit 8
5
Host Data Bus Bit 6
6
Host Data Bus Bit 9
7
Host Data Bus Bit 5
8
Host Data Bus Bit 10
9
Host Data Bus Bit 4
10
Host Data Bus Bit 11
11
Host Data Bus Bit 3
12
Host Data Bus Bit 12
13
Host Data Bus Bit 2
14
Host Data Bus Bit 13
15
Host Data Bus Bit 1
16
Host Data Bus Bit 14
17
Host Data Bus Bit 0
18
Device Data (15:0)
19
Ground (No Pin)
20 21
DMA Request
22
Ground
23
Device I/O Write: Stop Ultra DMA Burst
24
Ground
25
Device I/O Read: Host Ultra DMA Ready: Host Ultra DMA Data Strobe
26
Ground
27
I/O Channel Ready Device Ultra DMA Ready Device Ulta DMA Data Strobe
28
Cable Select
29
DMA Acknowledge
30
Ground
31
Device Interrupt
32
Reserved
33
Host Address Bus Bit 1
34
Passed Diagnostics Cable Assembly Type Identifier
35
Device Address (2:0)
36
Device Address (2:0)
37
Chip Select (1:0)
38
Chip Select (1:0)
39
Drive Active/Slave Present
40
Ground
CSEL
PDIAG DASP–
Host
28 34 39
Figure 7 I/O pins and supported ATA signals
SV35 Series Product Manual, Rev. C 29
Page 36

4.1.1 Supported ATA commands

The following table lists ATA-standard commands that the drive supports. For a detailed description of the ATA commands, refer to the Draft ATA-7 Standard. See “S.M.A.R.T. commands” on page 38 for details and sub- commands used in the S.M.A.R.T. implementation.
Table 6: Supported ATA commands
Command name Command code (in hex)
Check Power Mode 98H or E5
Configure Stream 51
H
Device Configuration Freeze Lock B1H / C1
Device Configuration Identify B1H / C2
Device Configuration Restore B1H / C0
Device Configuration Set B1H / C3
Device Reset 08
Download Microcode 92
Execute Device Diagnostics 90
Flush Cache E7
Flush Cache Extended EA
Format Track 50
Identify Device EC
H
H
H
H
H
H
H
H
H
H
H
H
Idle 97H or E3
Idle Immediate 95H or E1
Initialize Device Parameters 91
Read Buffer E4
Read DMA C8
Read DMA Extended 25
Read DMA Without Retries C9
Read Log Ext 2F
Read Multiple C4
Read Multiple Extended 29
Read Native Max Address F8
H
H
H
H
H
H
H
H
H
H
H
30 SV35 Series Product Manual, Rev. C
Page 37
Command name Command code (in hex)
Read Native Max Address Extended 27
Read Sectors 20
Read Sectors Extended 24
Read Sectors Without Retries 21
Read Stream DMA EXT 2A
Read Verify Sectors 40
Read Verify Sectors Extended 42
Read Verify Sectors Without Retries 41
Recalibrate 10
Security Disable Password F6
Security Erase Prepare F3
Security Erase Unit F4
Security Freeze F5
H
H
H
H
H
H
H
H
H
H
H
H
H
Security Set Password F1
Security Unlock F2
Seek 70
Set Features EF
Set Max Address F9
H
H
H
H
H
Note: Individual Set Max Address commands are identified by the value placed in the Set Max Features regis
-
ter as defined to the right.
Set Max Address Extended 37
Set Multiple Mode C6
H
H
Sleep 99H or E6
S.M.A.R.T. Disable Operations B0H / D9
S.M.A.R.T. Enable/Disable Autosave B0H / D2
Address:
Password:
Unlock:
Freeze Lock:
H
H
H
Lock:
00 01 02 03 04
H H H H H
S.M.A.R.T. Enable Operations B0H / D8
S.M.A.R.T. Execute Offline B0H / D4
H
H
SV35 Series Product Manual, Rev. C 31
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Command name Command code (in hex)
S.M.A.R.T. Read Attribute Thresholds B0H / D1
S.M.A.R.T. Read Data B0H / D0
S.M.A.R.T. Read Log Sector B0H / D5
S.M.A.R.T. Return Status B0H / DA
S.M.A.R.T. Save Attribute Values B0H / D3
S.M.A.R.T. Write Log Sector B0H / D6
Standby 96H or E2
Standby Immediate 94H or E0
Write Buffer E8
Write DMA CA
Write DMA Extended 35
Write DMA Without Retries CB
Write Log Extended 3F
H
H
H
H
H
H
H
H
H
H
H
H
H
Write Multiple C5
Write Multiple Extended 39
Write Sectors 30
Write Sectors Without Retries 31
Write Sectors Extended 34
Write Stream DMA EXT 3A
H
H
H
H
H
H
32 SV35 Series Product Manual, Rev. C
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4.1.2 Identify Device command

The Identify Device command (command code ECH) transfers information about the drive to the host following power up. The data is organized as a single 512-byte block of data, whose contents are shown in the Table 6 on page 30. All reserved bits or words should be set to zero. Parameters listed with an “x” are drive-specific or vary with the state of the drive. See Section 2.0 on page 3 for default parameter settings.
The following commands contain drive-specific features that may not be included in the Draft ATA-7 Standard.
Word Description Value
0
Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
• Bit 7: removable media
• Bit 6: removable controller
• Bit 0: reserved
1 Number of logical cylinders 16,383
2 ATA-reserved 0000
3 Number of logical heads 16
4 Retired 0000
5 Retired 0000
6 Number of logical sectors per logical track: 63 003F
7–9 Retired 0000
10–19 Serial number: (20 ASCII characters, 0000H = none) ASCII
0C5A
H
H
H
H
H
H
20 Retired 0000
21 Retired 0400
22 Obsolete 0000
23–26 Firmware revision (8 ASCII character string, padded with blanks to
x.xx
end of string)
27–46 Drive model number
(40 ASCII characters, padded with blanks to end of string)
ST3500641AV ST3250824AV ST3160812AV
47 (Bits 7–0) Maximum sectors per interrupt on Read multiple and Write
8010
multiple (16)
48 Reserved 0000
49 Standard Standby timer, IORDY supported and may be disabled 2F00
50 ATA-reserved 0000
51 PIO data-transfer cycle timing mode 0200
52 Retired 0200
H
H
H
H
H
H
H
H
H
SV35 Series Product Manual, Rev. C 33
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Word Description Value
53 Words 54–58, 64–70 and 88 are valid 0007
54 Number of current logical cylinders xxxx
55 Number of current logical heads xxxx
56 Number of current logical sectors per logical track xxxx
57–58 Current capacity in sectors xxxx
59 Number of sectors transferred during a Read Multiple or Write Multi-
xxxx
ple command
60–61 Total number of user-addressable LBA sectors available
0FFFFFFFh* (see Section 2.2 for related information) *Note: The maximum value allowed in this field is: 0FFFFFFFh
(268,435,455 sectors, 137 Gbytes). Drives with capacities over 137 Gbytes will have 0FFFFFFFh in this field and the actual number of user-addressable LBAs specified in words 100-103. This is required for drives that support the 48-bit addressing feature.
62 Retired 0000
63 Multiword DMA active and modes supported
xx07 (see note following this table)
H
H
H
H
H
H
H
H
64 Advanced PIO modes supported (modes 3 and 4 supported) 0003
65 Minimum multiword DMA transfer cycle time per word (120 nsec) 0078
66 Recommended multiword DMA transfer cycle time per word (120
0078 nsec)
67 Minimum PIO cycle time without IORDY flow control (240 nsec) 00F0
68 Minimum PIO cycle time with IORDY flow control (120 nsec) 0078
69–74 ATA-reserved 0000
75 Queue depth 0000
76–79 SATA-reserved xxxx
80 Major version number 007E
81 Minor version number 0000
82 Command sets supported 346B
83 Command sets supported 7D01
84 Command sets support extension 4003
H
H
H
H
H
H
H
H
H
H
H
H
H
85 Command sets enabled 34xx
H
34 SV35 Series Product Manual, Rev. C
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Word Description Value
86 Command sets enabled 3xxx
87 Command sets enable extension 4003
88 Ultra DMA support and current mode
xx3F
(see note following this table)
89 Security erase time 0000
90 Enhanced security erase time 0000
92 Master password revision code FFFE
93 Hardware reset value (see description following this table) xxxx
95–99 ATA-reserved 0000
100–103 Total number of user-addressable LBA sectors available
(see Section 2.2 for related information) These words are required for drives that support the 48-bit addressing
ST3500641AV = 976,773,168 ST3250824AV = 488,397,168 ST3160812AV = 312,581,808
feature. Maximum value: 0000FFFFFFFFFFFFh.
104–127 ATA-reserved 0000
128 Security status 0001
H
H
H
H
H
H
H
H
H
H
129–159 Seagate-reserved xxxx
160–254 ATA-reserved 0000
255 Integrity word xxA5
H
H
H
Note. Advanced Power Management (APM) and Automatic Acoustic Management (AAM) features are not supported
Note. See the bit descriptions below for words 63, 88, and 93 of the Identify Drive data:
Description (if bit is set to 1)
Bit Word 63
0 Multiword DMA mode 0 is supported.
1 Multiword DMA mode 1 is supported.
2 Multiword DMA mode 2 is supported.
8 Multiword DMA mode 0 is currently active.
9 Multiword DMA mode 1 is currently active.
10 Multiword DMA mode 2 is currently active.
Bit Word 88
0 Ultra DMA mode 0 is supported.
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1 Ultra DMA mode 1 is supported.
2 Ultra DMA mode 2 is supported.
3 Ultra DMA mode 3 is supported.
4 Ultra DMA mode 4 is supported.
8 Ultra DMA mode 0 is currently active.
9 Ultra DMA mode 1 is currently active.
10 Ultra DMA mode 2 is currently active.
11 Ultra DMA mode 3 is currently active.
12 Ultra DMA mode 4 is currently active.
13 Ultra DMA mode 5 is currently active.
Bit Word 93
13 1 = 80-conductor cable detected, CBLID above VIH
0 = 40-conductor cable detected, CBLID below VIL
36 SV35 Series Product Manual, Rev. C
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4.1.3 Set Features command

This command controls the implementation of various features that the drive supports. When the drive receives this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an inter­rupt. If the value in the register does not represent a feature that the drive supports, the command is aborted. Power-on default has the read look-ahead and write caching features enabled. The acceptable values for the Features register are defined as follows:
02
03
Enable write cache (default).
H
Set transfer mode (based on value in Sector Count register).
H
Sector Count register values:
00
01
08
09
0A
0B
0C
20
21
22
Set PIO mode to default (PIO mode 2).
H
Set PIO mode to default and disable IORDY (PIO mode 2).
H
PIO mode 0
H
PIO mode 1
H
PIO mode 2
H
PIO mode 3
H
PIO mode 4 (default)
H
Multiword DMA mode 0
H
Multiword DMA mode 1
H
Multiword DMA mode 2
H
55
82
AA
F1
40
41
42
43
44
45
Disable read look-ahead (read cache) feature.
H
Disable write cache.
H
Enable read look-ahead (read cache) feature (default).
H
Report full capacity available
H
Ultra DMA mode 0
H
Ultra DMA mode 1
H
Ultra DMA mode 2
H
Ultra DMA mode 3
H
Ultra DMA mode 4
H
Ultra DMA mode 5
H
Note. At power-on, or after a hardware or software reset, the default values of the features are as indi-
cated above.
SV35 Series Product Manual, Rev. C 37
Page 44

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

S.M.A.R.T. provides near-term failure prediction for disc drives. When S.M.A.R.T. is enabled, the drive moni­tors predetermined drive attributes that are susceptible to degradation over time. If self-monitoring determines that a failure is likely, S.M.A.R.T. makes a status report available to the host. Not all failures are predictable. S.M.A.R.T. predictability is limited to the attributes the drive can monitor. For more information on S.M.A.R.T. commands and implementation, see the Draft ATA-7 Standard.
SeaTools diagnostic software activates a built-in drive self-test (DST S.M.A.R.T. command for D4
) that elimi-
H
nates unnecessary drive returns. The diagnostic software ships with all new drives and is also available at: http://seatools.sea
gate.com.
This drive is shipped with S.M.A.R.T. features disabled. You must have a recent BIOS or software package that supports S.M.A.R.T. to enable this feature. The table below shows the S.M.A.R.T. command codes that the drive uses.
Code in features register S.M.A.R.T. command
D0
D1
D2
D3
D4
D5
D6
D7
H
H
H
H
H
H
H
H
S.M.A.R.T. Read Data
Vendor-specific
S.M.A.R.T. Enable/Disable Attribute Autosave
S.M.A.R.T. Save Attribute Values
S.M.A.R.T. Execute Off-line Immediate (runs DST)
S.M.A.R.T. Read Log Sector
S.M.A.R.T. Write Log Sector
Vendor-specific
D8
D9
DA
H
H
H
S.M.A.R.T. Enable Operations
S.M.A.R.T. Disable Operations
S.M.A.R.T. Return Status
Note. If an appropriate code is not written to the Features Register, the command is aborted and 0x 04
(abort) is written to the Error register.
38 SV35 Series Product Manual, Rev. C
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4.1.5 Streaming feature set support

The Streaming feature set is an optional feature set that allows a host to request delivery of data from a contig­uous logical block address range within an allotted time. This places a higher priority on time to access the data than the integrity of the data. Streaming feature set commands only support 48-bit, LBA-mode-only addressing.
Seagate implements the following Streaming commands:
• CONFIGURE STREAM
• READ STREAM DMA EXT
• WRITE STREAM DMA EXT
Command Completion Time Out (CCTO) errors are not deferrable on DMA operations, as they require some DMA engine clean up on the host side. Therefore, Seagate does not anticipate supporting any configurations where a CCTO needs to hide from reporting as an error, and simply show up in a Stream Error log. Since the Stream Error logs were intended to be used to report deferred errors such as this, Seagate has not imple­mented them.
4.1.5.1 Identify Device command
These drives will set word 84 bit 4 (Streaming Feature Set Supported) and word 87 bit 4 (Configure Stream command was issued) when a non-zero default time limit has been set for either reading or writing. If the host reconfigures both defaults to 0, the bit will clear.
Word 95 (Stream Minimum Request Size)
World 95 contains the number of sectors that provide optimum performance in a streaming environment. This number shall be a power of two, with a minimum of eight sectors (4096 bytes). The starting LBA value for each streaming command should be evenly divisible by this request size.
Words 96, 97, and 104
Unsupported.
Words 99:98
These words define the fixed unit of time that is used only in the Command Completion Time Limit (CCTL) that is passed in streaming commands. The unit of time for this parameter is microseconds. For example, a value of 50000 indicates 50 ms.
4.1.5.2 Streaming commands
Streaming commands are defined to be time-critical data transfers rather than the standard data-integrity-criti­cal commands. Each command shall be completed within the time specified in the CONFIGURE STREAM command or in the streaming command itself to ensure the stream requirements of the AV-type application. The drive may execute background tasks as long as the READ STREAM and WRITE STREAM command exe­cution time limits are still met.
The host may use the CONFIGURE STREAM command to define the default Command Completion Time Limit (CCTL) for reads and writes independently--this assists the device in setting up its caching for best per­formance. If the host does not use a CONFIGURE STREAM command, the device shall use the CCTL speci­fied in each streaming command, and the time limit is effective for one time only. If the CCTL is not set by a CONFIGURE STREAM command, the operation of a streaming command with a zero CCTL is device vendor specific. "Stream ID" as noted in the ATA specification is not used by the Seagate implementation.
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The streaming commands may access any user LBA on a device. These commands may be interspersed with non-streaming commands, but there may be an impact on performance due to the unknown time required to complete the non-streaming commands.
The streaming commands should be issued using a specified minimum number of sectors transferred per com­mand, as specified in word 95 of the IDENTIFY DEVICE response. The transfer length of a request should be a multiple of the minimum number of sectors per transfer, as should the starting LBA of any streaming com­mand.
Urgent bit
The Urgent bit in the READ STREAM and WRITE STREAM commands is ignored. Therefore, bits 9 and 10 of IDENTIFY DEVICE data words 84 and 87 shall remain clear.
Flush to Disk bit
The Flush to Disk bit in the WRITE STREAM command specifies that all data for the specified stream shall be flushed to the media before posting command completion. If a host requests flushes at times other than the end of each Allocation Unit, streaming performance may be degraded. Using the SET FEATURES command to enable/disable caching may not affect caching for streaming commands.
Not Sequential bit
The Not Sequential bit specifies that the next LBA(s) after those requested in the current READ STREAM com­mand are not anticipated to be used in a subsequent READ STREAM command. This information may help the device with pre-fetching decisions.
Read Continuous bit
If the Read Continuous bit is set to 1 for the command, the device shall attempt to transfer the requested amount of data to the host within the Command Completion Time Limit even if an error occurs. The data sent to the host by the device in an error condition is vendor specific.
Write Continuous bit
If the Write Continuous bit is set to 1 for the command and an error is encountered, the device shall still attempt to complete the transfer within the requested time. If an error occurs and cannot be resolved within the Com­mand Completion Time Limit, the erroneous section on the media may be unchanged or may contain unde­fined data. A future read of this area may not report an error, even though the data is erroneous. If the Flush Bit is set to 1 on the STREAM WRITE command and the data cannot successfully be written to the media, then the drive will report a Stream Error on the command.
Handle Streaming Error bit
The Handle Streaming Error bit specifies to the drive that this command starts at the LBA of a recently reported error section, so the device may attempt to continue its corresponding error recovery sequence where it left off earlier. This mechanism allows the host to schedule error recovery and defect management for content critical data.
40 SV35 Series Product Manual, Rev. C
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4.1.5.2.1 Configure Stream (51h)
The Configure Stream command specifies the default CCTL (Command Completion Time Limit) for streaming commands, and informs the drive of the Allocation Unit size and alignment.
Protocol: non-data
Register 76543210
Features
Sector Count
LBA Low, Mid, High
Device obs Ignored obs DEV Reserved
Command 51h
Note: The value indicated as Current is the value most recently written to the register. The value indicated as Previous is the value that was in the register before the most recent write to the register.
Current Ignored R/W Reserved Ignored
Previous Default CCTL (7:0)
Current AU Size In Sectors (7:0)
Previous AU Size In Sectors (15:8)
Current Reserved
Previous Reserved
FEATURES REGISTER FIELD DESCRIPTIONS
R/W
0 Read stream
1 Write stream
Default CCTL (Default Command Completion Time Limit)
This value is calculated as follows (with the unit of measure being microseconds):
Default CCTL = ((content of the Features register) * (IDENTIFY DEVICE words (99:98))
This time shall be used by the drive when an individual streaming command with a CCTL of 0 is issued. The time is measured from the write of the command register to the final INTRQ for command completion.
SECTOR COUNT REGISTER FIELD DESCRIPTIONS
Current
The size of an Allocation Unit in sectors (bits 7:0).
Previous
The size of an Allocation Unit in sectors (bits 15:8)
DEVICE REGISTER FIELD DESCRIPTIONS
Dev
The selected device.
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4.1.5.2.2 Read Stream DMA (2Ah)
Protocol: DMA In
This command reads from 1 to 65536 sectors as specified in the Sector Count register. A value of 0000h in the Sector Count register requests 65536 sectors.
The RC bit indicates that the drive operate in a continuous read mode for the READ STREAM command. When RC is set to 0, the drive shall operate in normal streaming read mode.
When the Read Continuous mode is enabled, the drive shall attempt to transfer data of the requested length without setting the ERR bit to 1. The SE bit shall be set to 1 if the data transferred includes errors, unless the transfer is unable to finish within the CCTL, in which case a CCTO error will be reported (see below). If an error is encountered, it may be necessary for the drive to pad the data being transferred to fulfill the host's requested transfer size. The implementation of the padding is vendor specific.
If the drive is unable to transfer the correct amount of data by the CCTL, the drive will set the ERR bit to 1 and the BSY bit to 0 in the Status Register, and the CCTO bit to 1 in the Error Register.
Register 76543210
Features
Sector Count
LBA Low, Mid, High
Device obs LBA obs DEV Reserved
Command 2Ah
Note: The value indicated as Current is the value most recently written to the register. The value indicated as Previous is the value that was in the register before the most recent write to the register.
Current Ignored RC NS Ignored r Ignored
Previous Command Completion Time Limit (7:0)
Current Sector count
Previous
Current LBA
Previous
FEATURES REGISTER FIELD DESCRIPTIONS
RC (Read Continuous mode enabled)
Regardless of the RC setting, if it is not possible to transfer the full amount of data that the host requested before the CCTL, the drive shall provide ending status with the BSY bit cleared to 0, the SE bit set to 0, the ERR bit set, and the CCTO bit set in the Error Register.
NS (Not Sequential)
This bit specifies that the next LBAs after those requested in the current READ STREAM command are not anticipated to be read in a near-future read stream command.
Features Register Previous
The time allowed for the current command’s completion. This is calcuated as follows:
CCTL = (content of the Features Register Previous) * (IDENTIFY DEVICE words (99:98))
42 SV35 Series Product Manual, Rev. C
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If the value is 0, the drive shall use the Default Command Completion Time Limit supplied with the most recent previous CONFIGURE STREAM command for this Stream type (Read or Write). If the Default Command Com­pletion Time Limit is 0, or no previous Configure Stream command was defined for this Stream type, the result is vendor specific. The time is measured from the write of the command register to the final INTRQ for com­mand completion.
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Error Outputs
If the RC bit is set to 0, the content of the registers shall be as shown below. If the RC bit is set to 1 and the drive was able to transfer the correct amount of data (even though some of it may be incorrect), the SE bit shall be set to 1, the ERR bit shall be set to 0.
Register 76543210
Error ICRC UNC N/A IDNF N/A ABRT N/A CCTO
Sector Count
LBA Low
LBA Mid
LBA High
Device obs N/A obs DEV Reserved
Status BSY DRDY SE Unused DRQ N/A N/A ERR
Note: HOB = 0 indicates the value read by the host when the HOB bit of the Device Control register is cleared to zero. HOB = 1 indicates the value read by the host when the HOB bit of the Device Control register is set to one.
HOB = 0 Length of Stream Error (7:0)
HOB = 1 Length of Stream Error (15:8)
HOB = 0 LBA (7:0)
HOB = 1 LBA (31:24)
HOB = 0 LBA (15:8)
HOB = 1 LBA (39:32)
HOB = 0 LBA (23:16)
HOB = 1 LBA (47:40)
ERROR REGISTER FIELD DESCRIPTIONS
ICRC (Interface CRC Error)
1 This bit shall be set to 1 if an interface CRC error has occurred during an Ultra DMA data transfer. The
content of this bit is not applicable for Multiword DMA transfers.
UNC (Uncorrectable)
1 This bit shall be set to 1 if data is uncorrectable. This bit should never be set on a streaming command.
IDNF
1 This bit shall be set to 1 if a user-accessible address could not be found. This bit shall be set to 1 if an
address outside of the range of user-accessible addresses is requested if command aborted is not returned.
ABRT
1 This bit shall be set to 1 if this command is not supported. ABRT may be set to 1 if the device is not
able to complete the action requested by the command. ABRT shall be set to 1 if an address outside of the range of user-accessible addresses is requested if IDNF is not set to 1.
CCTO (Command Completion Time Out)
1 This bit shall be set to 1 if a Command Completion Time Out error has occurred.
44 SV35 Series Product Manual, Rev. C
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SECTOR COUNT REGISTER FIELD DESCRIPTIONS
LBA Low/Mid/High
The address of the first uncorrectable error.
DEVICE REGISTER FIELD DESCRIPTIONS
DEV
This field indicates the selected device.
STATUS REGISTER FIELD DESCRIPTIONS
BSY
0 This bit shall be set to 0 indicating command completion.
DRDY
1
SE (Stream Error)
1 This bit shall be set to one if the data contained erroneous data (even though the correct amount of
data was transferred to the host). In this case, the LBA returned in the Sector Number registers shall be the address of the first sector in error, and the Sector Count registers shall contain the number of consecutive sectors that may contain errors.
DRQ
0 This bit shall be set to 0.
ERR
1 This bit shall be set to 1 if an Error register bit is set to 1.
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4.1.5.3 Write Stream DMA (3Ah)
Protocol: DMA Out
The Write Stream DMA command allows the host to write data using the DMA data transfer protocol. This com­mand allows for the host to specify to the device that additional actions need to be performed prior to the com­pletion of the command if the required bits are set.
If the Write Continuous bit is set to 1, the device shall attempt to not stop execution of the command due to errors. If the WC bit is set to 1 and errors occur in the transfer or writing of the data, the device shall attempt to continue to transfer the amount of data requested and then provide ending status with the BSY bit cleared to zero, the SE bit set to 1, the ERR bit cleared to 0. If the WC bit is set to 1 and the Command Completion Time Limit expires, the device shall stop execution of the command and provide ending status with the BSY bit cleared to 0, the SE bit clear, the ERR bit set, and report the fact that the Command Completion Time Limit expired by setting the CCTO bit in the error register. In all cases, the drive shall attempt to transfer the amount of data requested within the Command Completion Time Limit even if some data transferred is in error.
Additionally, if the F bit is set for a Write Stream command, the drive shall conclude processing for the com­mand (including flushing it to the media) before posting status.
Register 76543210
Features
Sector Count
LBA Low, Mid, High
Device obs LBA obs DEV Reserved
Command 3Ah
Note: The value indicated as Current is the value most recently written to the register. The value indicated as Previous is the value that was in the register before the most recent write to the register.
Current Ignored WC F Ignored r Ignored
Previous Command Completion Time Limit (7:0)
Current Sector count
Previous
Current LBA
Previous
FEATURES REGISTER FIELD DESCRIPTIONS
WC (Write Continuous)
This bit indicates if Write Continuous mode is enabled.
1 The device shall attempt to not stop execution of the command due to errors. If the WC bit is set to 1
and errors occur in the transfer or writing of data, the device shall attempt to continue to transfer the amount of data requested, and then provide ending status with the BSY bit cleared to 0, the SE bit set to 1, and the ERR bit cleared to 0. If the WC bit is set to 1 and the Command COmpletion Time Limit expires, te device shall stop execution of the command and provide ending status with the BSY bit cleared to 0, the SE bit clear, the ERR bit set, and report the fact that the Command Completion Time Limit expired by setting the CCTO bit in the error register to 1. In all cases, the device shall attempt to transfer the amount of data requested within the Command Completion Time Limit even if some data transferred is in error.
46 SV35 Series Product Manual, Rev. C
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F
1 This bit specifies that all data for the specified stream shall be flushed to the media before command
complete is reported.
CCTL (Command Completion Time Limit)
The time allowed for the current command to complete. This value is calculated as follows:
CCTL = (content of the Features register Previous) * (IDENTIFY DEVICE data words (99:98)) microseconds
0 The device shall use the Default Command Completion Time Limit supplied with the most recent previ-
ous CONFIGURE STREAM command for this Stream type (Read or Write). If the Default Command Completion Time Limit = 0, or no previous Configure Stream command was defined for this Stream ID, the result is vendor specific. The time is measured from the write of the command register to the final INTRQ for command completion.
Error Outputs
If the WC bit is set to 0, the content of the registers shall be as shown below. If the WC bit is set to 1 and the drive was able to transfer the correct amount of data (even though some of it may be written incorrectly to the media), the SE bit shall be set to 1 and the ERR bit shall be set to 0.
Register 76543210
Error ICRC N/A N/A IDNF N/A ABRT N/A CCTO
Sector Count
LBA Low
LBA Mid
LBA High
Device obs N/A obs DEV Reserved
Status BSY DRDY SE Unused DRQ N/A N/A ERR
Note: HOB = 0 indicates the value read by the host where the HOB bit of the Device Control register is set to 0. HOB = 1 indicates the value read by the host when the HOB bit of the Device Control register is set to 1.
HOB = 0 Length of Stream Error (7:0)
HOB = 1 Length of Stream Error (15:8)
HOB = 0 LBA (7:0)
HOB = 1 LBA (31:24)
HOB = 0 LBA (15:8)
HOB = 1 LBA (39:32)
HOB = 0 LBA (23:16)
HOB = 1 LBA (47:40)
ERROR REGISTER FIELD DESCRIPTIONS
ICRC
1 This bit shall be set to 1 if an interface CRC error has occurred during an Ultra DMA data transfer. The
content of this bit is not applicable for Multiword DMA transfers.
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IDNF
1 This bit shall be set to 1 if a user-accessible address could not be found. IDNF shall be set to 1 if an
address outside of the range of user-accessible addresses is requested if command aborted is not returned.
ABRT
1 This bit shall be set to 1 if this command is not supported. ABRT may be set to 1 if the device is not
able to complete the action requested by the command. ABRT shall be set to 1 if an address outside of the range of user-accessible addresses is requested if IDNF is not set to 1.
CCTO
1 This bit shall be set to 1 if a Command Completion Time Out error has occurred.
SECTOR COUNT REGISTER FIELD DESCRIPTIONS
Current, Previous
These bits contain the number of contiguous sectors potentially written unsuccessfully, or with bad data, begin­ning with the LBA of the first corrupted sector.
LBA (Low, Mid, High) (Current, Previous)
These bits contain the address of the first potentially corrupted sector.
DEVICE REGISTER FIELD DESCRIPTIONS
DEV
This bit shall indicate the selected device.
STATUS REGISTER FIELD DESCRIPTIONS
BSY
0 This bit shall be set to 0 indicating command completion.
DRDY
1 This bit shall be set to 1.
SE (Stream Error)
1 This bit shall be set to 1 if an error has occurred during the execution of the command when the WC bit
is set to 1 and the correct amount of data was transferred from the host. In this case, the LBA returned in the Sector Number registers shall be the address of the first sector in error, and the Sector Count registers shall contain the number of consecutive sectors that may contain errors.
DRQ
0 This bit shall be set to 0.
ERR
1 This bit shall be set to 1 if an Error register bit is set to 1 and the WC bit is set to 0, or if the drive was
unable to transfer the correct amount of data to the host.
4.1.5.3.1 Time-constrained operations
In general, time constraints have impacts not only on data transfer between the drive and the host, but also on the drive’s internal motion and movement of data to and from the internal buffer (cache). If the drive moves its actuator to access some data other than what the host is (or shortly will be) accessing, there will be an unavoidable delay before the actuator can be moved to where the host needs it to be to service a command.
48 SV35 Series Product Manual, Rev. C
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If write caching is allowed, the actuator could be busy servicing a cached write at virtually any time. The impli­cation is that a timeout on a read command could actually be due to a cached write. To address this case:
• Streaming commands will not time out if there is a non-streaming cached write in progress
• all cached write data is discarded if a timeout occurs on a streaming command
• when the host issues a streaming read to the drive, internal drive activity is limited to minimize the chances that significant time will be spent on a normal write, and
• timeouts are inhibited if this case is occurring.
4.1.5.3.2 Non-cached streaming writes use model
The host can issue streaming writes. If this is done, it is recommended that the host either set the F bit or dis­able write caching. If the host does neither, the drive has no way to accurately report the failure location and length in the event of a write failure on a cached write. Disabling caching or using the F bit will cause some per­formance loss compared to the case where caching was allowed. The most straightforward way to ensure that performance is maintained in this usage model is for the host to issue large writes, so that the seek time is insignificant when compared to the amount of time that the host can allow the command to consume. If the host’s time limit allows, the drive will perform internal defect management on any defective sectors encoun­tered. If the drive runs out of time during a write of this type, any currently cached sectors in the drive’s buffer will be discarded. If the error occured in the LBA range of the current command (rather than a cached com­mand), the portion of that write that may not have been successfully written to the media will be reported to the host in the ending status of the write command.
4.1.5.3.3 Non-streaming writes
In non-streaming writes, the drive does not discard any write data, but rather protects the data as if it were in a non-timed environment altogether. The cache algorithm ensures that if a write to the media is begun, it will be finished during the write command on the ATA bus, and will not adversely affect a streaming read.
A system may use this mode during boot, and then switch over to Streaming Writes for operational mode, back again to untimed mode for maintenance, etc. This behavior can be safe as long as a Flush Cache command is issued and completed before switching between write command types.
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5.0 Seagate Technology support services

Internet
For information regarding Seagate products and services, visit www.seagate.com. Worldwide support is available 24 hours daily by email for your questions.
Presales Support:
Presales@Seagate.com
Technical Support:
DiscSupport@Seagate.com
Warranty Support:
http://www.sea
mySeagate
my.seagate.com is the industry's first Web portal designed specifically for OEMs and distributors. It provides self-service access to critical applications, personalized content and the tools that allow our partners to manage their Seagate account functions. Submit pricing requests, orders and returns through a single, password-protected Web interface-anytime, anywhere in the world.
spp.seagate.com
spp.seagate.com supports Seagate resellers with product information, program benefits and sales tools. You may register for customized communications that are not available on the web. These communications contain product launch, EOL, pricing, promotions and other channel-related information. To learn more about the benefits or to register, go to spp.seagate.com, any time, from anywhere in the world.
gate.com/support/service/index.html
Seagate Service Centers
Presales Support
Our Presales Support staff can help you determine which Seagate products are best suited for your specific application or computer system, as well as product availability and compatibility.
Technical Support
Seagate technical support is available to assist you online at support.seagate.com or through one of our call centers. Have your system configuration information and your “ST” model number available.
SeaTDD(+1-405-324-3655) is a telecommunications device for the deaf (TDD). You can send questions or comments 24 hours daily and exchange messages with a technical support specialist during normal business hours for the call center in your region.
SV35 Series Product Manual, Rev. C 51
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Customer Service Operations
Warranty Service
Seagate offers worldwide customer support for Seagate products. Seagate distributors, OEMs and other direct customers should contact their Seagate Customer Service Operations (CSO) representative for warranty­related issues. Resellers or end users of drive products should contact their place of purchase or Seagate warranty service for assistance. Have your serial number and model or part number available.
Data Recovery Services
Seagate offers data recovery services for all formats and all brands of storage media. Our data recovery services labs are currently located throughout the world. . Additional information, including an online request form and data loss prevention resources, is available at http://services.sea
gate.com/index.aspx
Authorized Service Centers
Seagate Service Centers are available on a global basis for the return of defective products. Contact your customer support representative for the location nearest you.
USA/Canada/Latin America support services
For an extensive list of telephone numbers to technical support, presales and warranty service in USA/ Canada/Latin America, including business hours, go to the "Contact Us" page on www.sea
gate.com.
Global Customer Support
Presales, Technical, and Warranty Support Call Center Toll-free Direct dial
USA, Canada, and Mexico 1-800-SEAGATE +1-405-324-4700
Data Recovery Services Call Center Toll-free Direct dial FAX
USA, Canada, 1-800-475-01435 +1-905-474-2162 1-800-475-0158 and Mexico +1-905-474-2459
Europe, the Middle East and Africa Support Services
For an extensive list of telephone numbers to technical support, presales and warranty service in Europe, the Middle East and Africa, go to the "Contact Us" page on www.sea
gate.com.
Asia/Pacific Support Services
For an extensive list of telephone numbers to technical support, presales and warranty service in Asia/Pacific, go to the "Contact Us" page on www.sea
gate.com.
52 SV35 Series Product Manual, Rev. C
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Index

Numerics

3D Defense System 1
A
acoustics 18 Active mode 15 agency certification (regulatory) 20 alternate capacity jumper 25 altitude 16 ambient conditions 3 ambient temperature 12, 16 areal density 11 ATA interface 29 ATA-standard commands 30 Australian C-Tick 20 autodetection 1 average seek time 12
B
BIOS 25 BPI 11 breather filter hole precautions 24 buffer 11 burst 1
C
cable 26 cable select 1 cable-select option 25 cache 1, 11 case temperature 16 CE mark 20 certification 20 Check Power Mode 30 chemical substances 21 commands 30 compliance 20 conducted noise 14 conducted RF immunity 19 configuring the drive 23 connector pins 29 connectors 26 contact start-stop cycles 19 Corrosive environment 22 CSA C22.2 (950) 20 CSEL 25 C-Tick 20 current profile 14 cycles 19 Cylinders 10
D
Data Defense 1 data-transfer rates 1 DC power 13 Default logical geometry 10 density 11 Device Configuration Freeze Lock 30 Device Configuration Identify 30 Device Configuration Restore 30 Device Configuration Set 30 Device Reset 30 Diagnostic Defense 1 diagnostic software 1, 38 DiscWizard 25 Disk Manager 25 dissipation 13 Download Microcode 30 Drive Defense 1 drive diagnostics 12 drive monitoring 1 drive self-test 1, 38 DST 38
E
electrical fast transient 19 electromagnetic compatibility 20 Electromagnetic Compatibility Directive 20 electromagnetic immunity 19 electrostatic discharge 19 EMC compliance 20 EN 60950 20 enclosures 21 Environmental protection 21 environmental specifications 16 EPRML 11 error-correction algorithms 1 errors 19 European Union 20 European Union Restriction of Hazardous Substanc-
es 21
Execute Device Diagnostics 30
F
failure prediction 38 FCC verification 20 Features register 37 Flush Cache 30 Flush Cache Extended 30 Format Track 30 formatted capacity 10 frequency 19
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G
geometry 10 guaranteed sectors 10
H
handling 23 heads 1, 10 height 12 humidity 16
I
I/O data-transfer rate 11 Identify Device 30 Identify Device command 33 Idle 13, 30 Idle and Standby timers 15 Idle Immediate 30 Idle mode 15 Idle mode power 13 IEC950 20 Information Technology Equipment 20 Initialize Device Parameters 30 interface 11, 29 interface signals 29 interference 21 internal data-transfer rate OD 11 ISO document 7779 18
J
jumper settings 25
K
Korean RRL 20
L
LBA mode 10 length 12 logical geometry 10
M
maintenance 19 master 25 master/slave 1 Master/slave configuration 25 maximum temperature 16 measurement locations 16 modes 29 monitoring 1 mounting the drive 23, 26
N
noise 14 nominal power 3 nonoperating shock 17 nonoperating vibration 17 nonrecoverable read errors 19
O
operating power and current 13 operating shock 17 operating vibration 17 orientation 26
P
physical characteristics 12 pins 29 PIO 29 power consumption 13 power dissipation 13 power management 15 power specifications 13 power-management modes 15 Power-on to Ready 12 precautions 26 preventive maintenance 19 programmable power management 15
R
radiated RF immunity 19 radio and television interference 21 radio frequency 19 random track location 13 Read Buffer 30 Read DMA 30 Read DMA Extended 30 Read DMA without Retries 30 read errors 19 Read Log Ext 30 Read Multiple 1, 30 Read Multiple Extended 30 Read Native Max Address 30 Read Native Max Address Extended 31 Read Sectors 31 Read Sectors Extended 31 Read Sectors Without Retries 31 Read Verify Sectors 31 Read Verify Sectors Extended 31 Read Verify Sectors Without Retries 31 Read/write heads 10 Recalibrate 31 recording and interface technology 11 recording density 11 recording heads 1
54 SV35 Series Product Manual, Rev. C
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recording method 11 register 37 relative humidity 16 reliability 19 resistance 14 resistive load 14 RF 19 RoHS 21
S
S.M.A.R.T. commands 38 S.M.A.R.T. Disable Operations 31 S.M.A.R.T. drive monitoring 1 S.M.A.R.T. Enable/Disable Autosave 31 S.M.A.R.T. Enagle Operations 31 S.M.A.R.T. Execute Offline 31 S.M.A.R.T. Read Attribute Thresholds 32 S.M.A.R.T. Read Data 32 S.M.A.R.T. Read Log Sector 32 S.M.A.R.T. Return Status 32 S.M.A.R.T. Save Attribute Values 32 S.M.A.R.T. Write Log sector 32 safety certification 20 screws 26 SeaTools 1, 38 sectors 10 Sectors per track 10 Security Disable Password 31 Security Erase Prepare 31 Security Erase Unit 31 Security Freeze 31 Security Set Password 31 Security Unlock 31 Seek 31 seek mode 13 seek time 12 Seeking 13 servo electronics 13 Set Features 31 Set Features command 37 Set Max Address 31 Set Max Address Extended 31 Set Multiple Mode 31 shock 17 signals 29 single-track seeks 12 slave 25 Sleep 13, 31 Sleep mode 15 sound 18 specifications 3 spindle speed 11 Spinup 13 spinup power 13 Standby 13, 32
Standby Immediate 32 Standby mode 13, 15 Standby to Ready 12 start/stop times 12 start-stop cycles 19 static-discharge precautions 23 stop times 12 subassembly 20 support services 51 surge immunity 19
T
technical support services 51 temperature 16 temperature gradient 16 timers 15 TMR 1 track density 11 track-to-track seek time 12 TUV North America 20
U
UL 1950 20 Ultra ATA/100 26 Ultra DMA 26
V
vibration 17 voltage 14 voltage dips, interrupts 19 voltage tolerance 14
W
weight 12 wet bulb temperature 16 width 12 Write Buffer 32 Write DMA 32 Write DMA Extended 32 Write DMA Without Retries 32 Write Log Extended 32 Write Multiple 1, 32 Write Multiple Extended 32 Write Sectors 32 Write Sectors Extended 32 Write Sectors Without Retries 32
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Seagate Technology LLC
920 Disc Drive, Scotts Valley, California 95066-4544, USA
Publication Number: 100415205, Rev. C, Printed in U.S.A.
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