Site requirements 41
You should not see any condensation in or around the disk array under any
conditions. There is no procedure for recovery from moisture condensation.
Mechanical vibration
Continuous vibration can cause a slow degradation of mechanical parts
and, when severe, can cause data errors in disk drives. Mechanical
connections such as printed circuit assembly (PCA) conductors, cable
connectors, and processor backplane wiring can also be affected by
vibrations. Vibration specifications apply to all three axes.
Table 10. Humidity specifications
Humidity range type
Noncondensing
relative humidity
(RH)
Operating humidity range at 22° C (71° F) 20% to 80%
Nonoperating humidity range 8% to 90%
Shipping and storage humidity range (product packed in factory packing) 5% to 95%
Operating maximum wet bulb temperature 26° C (79° F)
Nonoperating maximum wet bulb temperature 27° C (81° F)
Shipping and storage maximum wet bulb temperature 29° C (84° F)
Table 11. Mechanical vibration specifications
Condition Specification
Operating 0.25 mm, 5–10 Hz
0.05 G, 10–300 Hz
Nonoperating 2.5 mm, 5–10 Hz
0.5 G, 10–70 Hz
0.05 mm, 70–99 Hz
1.0 G, 99–300 Hz
Shipping and storage (product packed in factory packing) 0.5 G, 15 min.
1
at four most severe
resonances between 5–200 Hz
1 See ASTM D999-91 Standard Methods for Vibration Testing of Shipping Containers.
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