HP 3000 Enterprise Virtual Array - Manual (Page 108)

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Figure 52 228481–002/22481–003 PDU assembly
1.
mounting brackets
2. cord retention brackets
3. grounding cables
PDMs
There are eight PDMs mounted in the rear of each rack:
• Four mounted on the left vertical rail connect to PDU 1.
• Four mounted on the right vertical rail connected to PDU 2.
Each PDM has six AC receptacles and two thermal circuit breakers. The PDMs distribute the AC power
from the PDUs to the enclosures. Two power sources exist for each controller pair and drive enclosure. If
a PDU fails, the system will remain operational.
CAUTION:
The AC power distribution within a rack ensures a balanced load to each PDU and reduces the possibility
of an overload condition. Changing the cabling to or from a PDM could cause an overload condition.
HP supports only the AC power distributions defined in this user guide.
108 Storage system hardware components