Seagate ST3250824AV, ST3500641AV, ST3160812AV User Manual

Product Manual

SV35 Series PATA

ST3500641AV ST3250824AV ST3160812AV

100415205 Rev . B August 2007

August 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 oper ating envi ronme nt and for matting. Seagate reserves the right to chan ge, w ithout notice, product offerings or specifications.

SV35 Series Product Manual, Rev. B

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. B

iii

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. B

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. See Section 4.1.5 on page 39 for additional information about Streaming features.

• 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.

SV35 Series Product Manual, Rev. B

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. B

T a ble 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 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) 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) 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)

40.0 (nonoperating)

(–200 ft. to 10,000+ ft.)

(–200 ft. to 40,000+ ft.)

SV35 Series Product Manual, Rev. B

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 period s of driv e idle, some offline acti vity may occu r ac cor ding to the S.M.A.R.T. spe cif icati on, whi ch ma y in crease 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)

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 W arranty” link. You will be asked to provide the drive serial number, model number (or part number) and country of purcha se. The system will display the warranty information for your drive.

SV35 Series Product Manual, Rev. B

T a ble 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.)

SV35 Series Product Manual, Rev. B

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 period s of driv e idle, some offline acti vity may occu r ac cor ding to the S.M.A.R.T. spe cif icati on, whi ch ma y in crease 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)

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, cli ck on th e “Verify Your W arr anty” 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. B

T a ble 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 2 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.)

SV35 Series Product Manual, Rev. B

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 period s of driv e idle, some offline acti vity may occu r ac cor ding to the S.M.A.R.T. spe cif icati on, whi ch ma y in crease 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)

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. Y ou will b e asked to pr ovide the drive se rial n umber, model number (or part number) and country of purchase. The system will display the warranty information for your drive.

SV35 Series Product Manual, Rev. B

2.2 Formatted ca pacity

Formatted

Model

ST3500641AV 500 Gbytes 976,773,168 512

ST3250824AV 250 Gbytes 488,397,168 512

ST3160212ACE 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.

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 logi cal geometry

Cylinders Read/write heads Sectors per track

16,383 16 63

LBA mode

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

SV35 Series Product Manual, Rev. B

2.4 Record i n g an d i nt erface 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/inch

ST3500641AV and ST3250824AV 97.69

ST3160812AV 119.0

Spindle speed (RPM) (± 0.2%) 7,200

max)

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 ST3250824A V and ST3160812AV

16 MBytes (16,384 kbytes) 8 Mbytes (8,192 kbytes)

SV35 Series Product Manual, Rev. B

2.5 Physical characteristics

Drive specification

Maximum he i g ht

(mm) (inches)

26.1

1.028

Maximum wid th

Maximum length

Typical weight

(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 measurem ent s a re t ake n wi th nom inal po w er a t 25 °C amb ient temperature. All times are measured usi ng 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.

T yp ical seek times (msec) Re ad 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

St andby to Ready (sec) 16 (max)

Ready to spindle stop (sec) 10 (max)

SV35 Series Product Manual, Rev. B

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 re aches operating speed.

• Seek mode

During seek mod e, the read /write actuator arm move s toward a spe cific positi on on the d isc 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 powe r

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. B

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%

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