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Momentus 5400.2 Blade Server Product Manual, Rev. B
Average seek, read (msec typical) 12.5
Average seek, write (msec typical) 14.5
Full-stroke seek (msec) 22 (typical); 24 (max)
Seek power (typical) 2.0 watts
Read/write power (typical)
Read: 1.8 watts
Write: 1.8 watts
Idle mode (typical) 0.80 watts
Standby mode 0.26 watts (typical)**
Sleep mode 0.26 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)
Performance seek
2.9 (typical)
3.1 (max)
Nonrecoverable read errors 1 per 10
14
bits read
Annualized Failure Rate (AFR) 1.74% at maximum case temperature of 40°C and 8,760 power on hours (POH)
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
Table 1: Specifications
Drive specification ST9120821AB ST9100824AB ST98823AB ST96812AB ST94813AB