Site Requirements
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conductor-connected grounded power systems and/or they may have
resistive impedance inserted in ground and/or neutral lines. The disk
array requires a solidly conductor-connected ground and may require a
separate neutral in the case of WYE or STAR connections. For HP
disk arrays, TN grounding systems are preferred.
Receptacles
Each disk array cabinet has two or four separate connections to AC power.
• For disk array cabinets with two connections to AC power, each input
must be capable of supporting the entire current demand for the
cabinet.
• For disk array cabinets with four connections to AC power, the two
inputs to AC Box 1 or the two inputs to AC Box 2 must be capable of
supporting the entire current demand for the cabinet.
Figure 9
shows two examples of the fault-tolerant operation of the disk
array.
Figure 9. Examples of fault-tolerant power connections
