30 HP StorageWorks XP10000 Disk Array Site Preparation Guide
Raised floor requirements
The computer room floor must be able to support the total weight of the
equipment as well as localized weight at each caster or foot of the
equipment cabinets. A common method of preparing an adequate floor for
a computer room is to construct a raised floor over the building floor. A
raised floor:
• Allows weight to be spread evenly across the floor
• Provides an under-floor area for running interconnecting cables
conveniently and unobtrusively
• Allows optimum distribution of conditioned air
Warning
If metal is used in the construction of the raised floor, ensure that there is a
common ground connection between the raised floor and main floor to
avoid possible build up of different voltage potentials. Failure to comply
can result in serious injury to personnel and damage to equipment.
Requirements for raised floors:
• Raised floor access ramps must not exceed a 10
° slope.
• Use a raised floor system (254 to 305 mm, 10 to 12 inches) for the
most favorable room air distribution system.
• Grid panels must be at least 450 x 450 mm (17.72 x 17.72 in).
• The floor must have a load rating between 300 and 500 kg per square
meter (553 to 921.7 lb per square yard, or 61.4 to 102.4 lb per square
foot). The maximum floor loading at any point is 500 kg (1102.3 lb).
To estimate the load rating you need for your floor, consider the total
weight of all of these items:
• The disk array; see “Component weights” (page 21)
• Other equipment
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