Seagate 6451, 6450 manual Temperature gradient, Altitude, Relative humidity, Shock and vibration

12Medalist Pro 6450/6451 Product Manual, Rev. B

1.13.2 Temperature gradient

Operating	20°C per hour (36°F per hour)
Nonoperating	25°C per hour (45°F per hour)

1.13.3 Altitude

Operating	–1,000 ft. to 10,000 ft. (–305 m to 3,048 m)
Nonoperating	–1,000 ft. to 40,000 ft. (–305 m to 12,192 m)

1.13.4 Relative humidity

Operating	8% to 80% noncondensing
	Maximum wet bulb 29.4°C (85°F)
Maximum operating	10% per hour
gradient
Nonoperating	5% to 95% noncondensing
	Maximum wet bulb 35°C (95°F)

1.14 Shock and vibration

All shock and vibration specifications apply when the drive is mounted as recommended in Section 2.5 on page 22, with the input levels measured at the drive mounting screws. Shock measurements are based on an 11 msec, half sine wave shock pulse, not to be repeated more than twice per second.

During normal operating shock and vibration, there is no physical dam- age to the drive or performance degradation. During nonoperating shock and vibration, the read/write heads are positioned in the landing zone.

During abnormal operating shock and vibration, there is no physical damage to the drive, although performance may be degraded during the shock or vibration episode. When normal operating shock levels resume, the drive meets its performance specifications.

	Operating	Abnormal	Nonoperating
Shock	2 Gs	10 Gs	75 Gs
5–22 Hz vibration	0.020-inch	—	0.081-inch
	displacement		displacement
22–350 Hz vibration	0.50 Gs	—	2.00 Gs