Seagate ST9120817AS ユーザーズマニュアル

4

Momentus 5400.4 SATA Product Manual, Rev. A

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment 

and formatting.

Full-stroke seek (msec)

20 (typical); 24 (max)

Startup current, +5V (typical)

1.0 amps

Seek power (typical)

2.0 watts

Read/write power (typical)

Read: 2.0 watts; Write: 1.6 watts

Idle mode, low power (typical)

0.6 watts

Standby mode

0.20 watts (typical)***

Sleep mode

0.20 watts (typical)***

Voltage tolerance (including noise)

+5V ± 5%

Ambient operating temperature 

0° to 60°C (operating), –40° to 70°C (nonoperating)

Temperature gradient (°C per hour max)

20°C (operating)

 

35°C (nonoperating)

Relative humidity

5% to 95% (operating)

 

5% to 95% (nonoperating)

Relative humidity gradient

30% per hour max

Wet bulb temperature (°C max)

37.7 (operating)

 

40 (nonoperating)

Altitude, operating

–304.8 m to 3,048 m (–1,000 ft to 10,000

+ 

ft)

Altitude, nonoperating 

 

(meters below mean sea level, max)

–304.8 m to 12,192 m (–1000 ft to 40,000

+ 

ft)

Shock, operating (Gs max at 2 msec)

325

Shock, nonoperating (Gs max at 2 msec)

800

Shock, nonoperating (Gs max at 1 msec)

900

Shock, nonoperating (Gs max at 0.5 msec)

600

Vibration, operating

1.5 G (0 to peak, 5–500 Hz)

Vibration, nonoperating

5 Gs (0 to peak, 5–500 Hz)

Drive acoustics, sound power (bels)

   Idle**

2.4 (typical)

 

2.6 (max)

   Performance seek

2.6 (typical)

 

2.8 (max)

Nonrecoverable read errors

1 per 10

14 

bits read

Annualized Failure Rate (AFR)

0.7%

Load/Unload (U/UL) cycles

 

 

25°C, 50% relative humidity

 

 

 

32°C, 80% relative humidity 

 

5°C, 80% relative humidity 

 

5°C, 10% relative humidity 

 

55°C, 16% relative humidity 

 

 

600,000 software-controlled power on/off cycles

 

20,000 hard power on/off cycles

 

 

600,000 software-controlled power on/off cycles

 

20,000 hard power on/off cycles

 

Warranty

5 years on distribution units.
To determine the warranty for a specific drive, use a web browser to access the following 
web page:
www.seagate.com/support/service/
From this page, click on the “Verify Your Warranty” link. You will be asked to provide the 
drive serial number, model number (or part number) and country of purchase. The system 
will display the warranty information for your drive.

Supports Hotplug operation per Serial ATA 
Revision 2.5 specification

Yes (requires COMPRESET from host after a hotplug event)