Manual

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Figure 25 Dual PDU assembly
1. PDU 1
2. PDU 2
3. Circuit breakers 4. AC receptacles
5. Mounting hardware
PDU 1
PDU 1 connects to AC power distribution source 1. A PDU 1 failure:
• Disables the power distribution circuit.
• Removes po
werfromPDMs1,2,and3.
• Disables PS 1 in the drive enclosures.
• Disables the upp er controller power supply.
PDU 2
PDU 2 connects to AC power distribution source 2. A PDU 2 failure:
• Disables the power distribution circuit.
• Removes power from PDMs 4, 5, and 6.
• Disables PS 2 in the drive enclosures.
• Disables the lower controller power supply.
PDMs
There are six PDMs mounted in the rear of each rack:
• Three m
ounted on the left vertical rail co nnect to PDU 1.
• Three mounted on the right vertical rail connected to PDU 2.
Each PDM h as eight AC receptacles and one thermal circuit breaker. The PDMs distribute the AC power
from the PDUs to the enclosures. Two power sources exist for each controller pair a nd drive enclosure. If
aPDUfa
ils, the system will remain operational.
CAUTION:
The AC power d istribution 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.
Enterprise Virtual Array 3000/5000 user guide
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