HP StorageWorks XP20000 Disk Array Site Preparation Guide (AE190-96002, September 2007)

Equipment clea
rance and floor loading
The following fi
gure shows rack dimensions.
Figure 2 Rack Assembly Footprint
Calculating clearances
The total floor clearance required for the disk array includes:
• The actual space required by the equipment.
• Service cl
earance — the floorspacerequiredto access thedisk array. Never usethisspacefor
storage. The service clearance for the XP20000 rack is 30 inches in the rear and 48 inches in
the
front.
• Additional space required to properly distribute the equip m ent weight on your computer room’s
raised floor. The amount of additional space required depends on your floor load rating.
Environmental requirements
The environmental specifications for o p erating your d is k array must be satisfied before installation.
Altitud
e
The maximum altitude for disk array operation is 3,000 meters. For nonoperational or storage situations,
the
maximum altitude is 4,000 meters.
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, p roducing condensation.
Condensation on any disk hardware ca n damage the components.
Any questions regarding the adequacy of airflow construction should be referred to and evaluated by a
qualified structural engineer.
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Site requirements