Altitude Requirements; Air Conditioning Requirements; Temperature Specifications; Humidity Specifications - HP StorageWorks XP12000 - Disk Array Site Preparation Manual

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
Temperature range type
Recommended operating temperature range
Operating temperature
Nonoperating temperature range
Shipping and storage temperature (product packed in
factory packing)
Temperature shock immunity (maximum rate of
temperature change)
Over-temperature warning
Over-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.
Range
21 to 24 degrees C70 to 75 degrees F
16 to 32 degrees C61 to 89 degrees F
–10 to +43 degrees C14 to 109 degrees F
–25 to +60 degrees C–13 to +140 degrees F
10 degrees C per hour18 degrees F per hour
At 40 degrees C104 degrees F
At 60 degrees C140 degrees F
XP12000 Disk Array Site Preparation Guide 37