Seagate ST9400321AS ユーザーズマニュアル

Momentus Product Manual, Rev. D

5

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

and formatting.

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

power to operational levels.

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

modes will not contribute to battery power consumption.

Seek power (typical)

1.3W

Read/write power (typical)

Read: 1.25W; Write: 1.65W

Idle mode, low power (typical)

0.47W

Standby mode

0.12W (typical)***

Sleep mode

0.12W (typical)***

Voltage tolerance (including noise)

+5V ± 5%

Ambient temperature 

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

Temperature gradient

 

(°C per hour max)

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 3048 m (–1000 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 2ms)

350

Shock, nonoperating (Gs max at 1ms)

1000

Shock, nonoperating (Gs max at 0.5ms)

1000

Vibration, operating

1.0 G (0 to peak, 5–500 Hz)

Vibration, nonoperating

5.0 Gs (0 to peak, 5–500 Hz)

Drive acoustics, sound power (bels)

   Idle**

2.3 (typical)

 

2.5 (max)

  Seek

2.4 (typical)

 

2.6 (max)

Nonrecoverable read errors

1 per 10

14

 bits read

Annualized Failure Rate (AFR)

0.48%

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

 

50,000 hard power on/off cycles

 

 
600,000 software-controlled power on/off cycles

 

50,000 hard power on/off cycles

 

Warranty

To determine the warranty for a specific drive, use a web browser to access the

 

following web page:

 

http://www.seagate.com/www/en-us/support/warranty_&_returns_assistance

 

You will be asked to provide the drive serial number, model number (or part number)

 

and country of purchase. After submitting this information, the system will display the

 

 warranty information for your drive.

Supports Hotplug operation per

 

Serial ATA Revision 2.6 specification

Yes (requires COMRESET from host after a hotplug event)