Humidity Specifications; Vibration Specifications; Humidity Specifications For The Xp24000/Xp20000 Disk Arrays; Vibration Specifications Xp24000/Xp20000 Disk Arrays - HP XP20000/XP24000 Manual
Hp storageworks xp24000/xp20000 disk array site preparation guide (ae002-96055, september 2010)
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Also See for XP20000/XP24000:
- Manual (448 pages) ,
- Reference manual (372 pages) ,
- Configuration manual (183 pages)
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Humidity specifications
Maintain the humidity levels specified in
between some dissimilar metals. This eventually causes a high resistance between connections, leading
to equipment failure.
Low humidity contributes to undesirably high levels of electrostatic charge. This increases the electrostatic
discharge (ESD) voltage potential. ESD can cause component damage during servicing operations.
Low humidity levels are often the result of the facility heating system and occur during the cold season.
Most heating systems provide air with a low humidity level, unless the system has a built-in humidifier.
You should not see any condensation in or around the disk array under any conditions. There is no
procedure for recovery from moisture condensation.
Table 7 Humidity specifications for the XP24000/XP20000 Disk Arrays
Humidity range type
Recommended operating humidity range
at 22 degrees C (71 degrees F)
Operating humidity range
at 22 degrees C (71 degrees F)
Non-operating humidity range
Shipping and storage humidity range
(product packed in factory packing)
Operating maximum wet bulb temperature
Non-operating maximum wet bulb temperature
Shipping and storage maximum wet bulb temperature
Vibration specifications
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. For specification tests, see ASTM D999-91 Standard Methods
for Vibration Testing of Shipping Containers.
Table 8 Vibration specifications XP24000/XP20000 Disk Arrays
Condition
Operating
Non-operating
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Site requirements for the HP Disk Arrays
Table
7. High humidity levels cause galvanic actions to occur
Noncondensing relative humidity (RH)
50% to 55%
20% to 80%
8% to 90%
5% to 95%
26 degrees C, 79 degrees F
27 degrees C, 81 degrees F
29 degrees C, 84 degrees F
Specification
0.25 mm, 5 10 Hz
0.05 G, 10 300 Hz
2.5 mm, 5 10 Hz
0.5 G, 10 70 Hz
0.05 mm, 70 99 Hz
1.0 G, 99 300 Hz
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