Seagate ST9808211AB ユーザーズマニュアル

4

Momentus 5400.2 Blade Server Product Manual, Rev. B

*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.

Read/write power (typical)

2.05/2.1 watts

Idle mode (typical)

0.99 watts 

Standby mode

0.2 watts (typical)**

Sleep mode

0.2 watts (typical)**

Voltage tolerance (including noise)

5V ± 5%

Ambient temperature

5° to 55°C (operating)

 

–40° to 70°C (nonoperating)

Temperature gradient

 

(°C per hour max, noncondensing)

20°C (operating)

 

30°C (nonoperating)

Relative humidity (noncondensing)

5% to 90% (operating)

 

5% to 95% (nonoperating)

Relative humidity gradient

30% per hour max

Wet bulb temperature (°C max)

30°C (operating)

 

40°C (nonoperating)

Altitude, operating

–304.8 m to 3,048 m (–1000 ft to 10,000 ft)

Altitude, nonoperating

 

(below mean sea level, max)

–304.8 m to 12,192 m (–1,000 ft to 40,000 ft)

Shock, operating (Gs max at 2 msec)

250

Shock, nonoperating (Gs max at 2 msec)

800

Shock, nonoperating (Gs max at 1 msec)

900

Shock, nonoperating (Gs max at 0.5 msec)

400

Vibration, operating (max displacement may 
apply below 10 hz)

1.0 Gs (0 to peak, 5–500 Hz)

Vibration, nonoperating (max displacement 
may apply below 22 hz)

5.0 Gs (0 to peak, 10–500 Hz)

Drive acoustics, sound power (bels)

Idle*

2.4 (typical)

 

2.6 (max)

Quiet seek

2.6 (typical)

 

2.8 (max)

Performance seek

2.9 (typical)

 

3.1 (max)

Nonrecoverable read errors

1 per 10

14

 bits read

Mean Time Before Failure (MTBF)

500,000 hours at 25°C ambient temperature
8,760 Power On Hours/year at nominal power.

 

Max case temperature: 40°C at the case measurement location shown in Figure 4.

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

 

Service life

5 Years

Warranty

5 Years