HP StorageWorks XP24000 Disk Array Site Preparation Guide, v01 (AE131-96002, June 2007)

Altitude
The maximum altitude for system operation is 3,000 meters (9,842 feet). The minimum altitude for
system operation is –60 meters (–197 feet).
Air conditioning
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 14 Temperature specifications
RangeTemperature range type
21 to 24 degrees C, 70 to 75 degrees FRecommended operating temperature range
16 to 32 degrees C, 61 to 89 degrees FOperating temperature
–10 to +43 degrees C, 14 to 109 degrees FNonoperating temperature range
–25 to +60 degrees C, 13 to +140 degrees FShipping and storage temperature (product packed
in factory packing)
10 degrees C per hour, 18 degrees F per hourTemperature shock immunity (maximum rate of
temperature change)
At 40 degrees C, 104 degrees FOver-temperature warning
At 60 degrees C, 140 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 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.
Site requirements for the HP XP24000 Disk Array34