A
Environmental Stabilization
Always ensure environmental stabilization of the RA7x disk drive or RA7x FRU
prior to installation or before operation if the disk drive has been removed from
its normal operating site. Otherwise, the drive media or associated electronics
may be damaged. Environmental stabilization includes temperature and
humidity stabilization.
If condensation is visible on the outside of the disk drive,
stabilize the
disk drive or enclosure in the operating environment for 6 hours or until the
condensation is no longer visible, whichever is longer. Do not insert the disk
drive into the SA7x enclosure until it is fully stabilized.
If condensation is not visible on the drive
, see Table A–1 for the correct
thermal stabilization time.
CAUTION
The disk drive can be stabilized in or outside the SA7x enclosure.
However, do not spin up the drive until it is stabilized.
Table A–1 Thermal Stabilization Specifications
Temperature Range
Degrees C
Temperature Range
Degrees F
Minimum stabilization time
60 to 66
l40 to 151
3 hours
50 to 59
122 to 139
2 hours
40 to 49
104 to 121
1 hour
30 to 39
86 to 103
30 minutes
18 to 29
65 to 85
No stabilization required
10 to 17
50 to 64
30 minutes
0 to 9
32 to 49
1 hour
–10 to –1
14 to 31
2 hours
–20 to –11
–4 to 13
3 hours
–30 to –21
–22 to –5
4 hours
–40 to –31
–40 to –21
5 hours
Environmental Stabilization A–1
