Seagate ST92811A, ST94811A, ST94011A, ST92011A manual Specifications

Table 1:	Specifications
Drive specification		ST94011A	ST94811A	ST92011A	ST92811A
Full-stroke seek (msec)		22 (typical); 26 (max)
Seek power (typical)		2.4 watts
Read/write power (typical)		2.4 watts
Idle mode (typical)		1.2 watts
Standby mode		0.36 watts (typical)**
Sleep mode		0.36 watts (typical)**
Voltage tolerance (including noise)		5V ± 5%
Ambient temperature		5° to 55°C (operating)
		–40° to 65°C (nonoperating)
Temperature gradient (°C per hour max)		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)		33°C (operating)
		40°C (nonoperating)
Altitude, operating		–192.12 m to 3,048 m (–650 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)		225
Shock, nonoperating (Gs max at 2 msec)		800
Shock, nonoperating (Gs max at 1 msec)		800
Shock, nonoperating (Gs max at 0.5 msec)		400
Vibration, operating (max displacement may apply below		1.0 Gs (0 to peak, 5–500 Hz)
10 hz)
Vibration, nonoperating (max displacement may apply		5.0 Gs (0 to peak, 5–500 Hz)
below 22 hz)
Drive acoustics, sound power (bels)
Idle*		2.3 (typical)
		2.5 (max)
Quiet seek		2.5 (typical)
		2.7 (max)
Performance seek		3.0 (typical)
		3.2 (max)
Nonrecoverable read errors		1 per 1014 bits read
Mean time between failures (power-on hours)		330,000 at 25°C
		Max case temperature: 60°C
Load/Unload (U/UL) cycles
25°C, 50% relative humidity		300,000 software-controlled power on/off cycles
		20,000 hard power on/off cycles
32°C, 80% relative humidity		100,000 software-controlled power on/off cycles
5°C, 80% relative humidity		20,000 hard power on/off cycles
5°C, 10% relative humidity
55°C, 16% relative humidity
Service life		5 Years
Warranty		1 Year

*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.

4 Momentus 5400.1 Product Manual, Rev. F