HP StorageWorks XP12000 Disk Array Site Preparation Guide (AE002-96040, March 2008)

Altitude requirements
The maximum altitude for system operation is 3,000 meters. For nonoperational or storage situations,
the maximum altitude is 4,000 meters. The minimum altitude for system operation is –60 meters.
Air conditioning requirements
Use separate computer room air conditioning duct work. If it is not separate from the rest of the
building, it might be difficult to control cooling and air pressure levels. Duct work seals are important
for maintaining a balanced air conditioning system and high static air pressure. Adequate cooling
capacity means little if humidity levels increase when the ducts are exposed to warm air, producing
condensation. Condensation on any disk hardware can damage the components.
Any questions regarding the adequacy of airflow construction should be referred to and evaluated
by a qualified structural engineer.
Temperature specifications
Table 11 Temperature specifications
RangeTemperature range type
21 to 24 degrees C70 to 75 degrees FRecommended operating temperature range
16 to 32 degrees C61 to 89 degrees FOperating temperature
–10 to +43 degrees C14 to 109 degrees FNonoperating temperature range
–25 to +60 degrees C–13 to +140 degrees F
Shipping and storage temperature (product packed in
factory packing)
10 degrees C per hour18 degrees F per hour
Temperature shock immunity (maximum rate of
temperature change)
At 40 degrees C104 degrees FOver-temperature warning
At 60 degrees C140 degrees FOver-temperature shutdown
Humidity specifications
Maintain proper humidity levels. High humidity levels cause galvanic actions to occur 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 charges. 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.
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