HP 6400/8400 HP StorageWorks 6400/8400 Enterprise Virtual Array User Guide - Page 22

PDU A, PDMs, PDU B connects to AC PDM B1-B4.

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Figure 17 Dual PDU-rear view 1. PDU B 2. PDU A 3. Main circuit breaker 4. Circuit breakers PDU A PDU A connects to AC PDM A1-A4. A PDU A failure: • Disables the power distribution circuit • Removes power from from the left side of the rack • Disables disk enclosure PS 1 • Disables the left power supplies in the controllers PDU B PDU B connects to AC PDM B1-B4. A PDU B failure: • Disables the power distribution circuit • Removes power from the right side of the rack • Disables disk enclosure PS 2 • Disables the right power supplies in the controllers PDMs Depending on the rack, there can be up to eight PDMs mounted in the rear of the rack: • The PDMs on the left vertical rail connect to PDU A • The PDMs on the right vertical rail connect to PDU B 22 EVA6400/8400 hardware

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Figure 17 Dual PDU—rear view
3. Main circuit breaker
1. PDU B
4. Circuit breakers
2. PDU A
PDU A
PDU A connects to AC PDM A1–A4.
A PDU A failure:
•
Disables the power distribution circuit
•
Removes power from from the left side of the rack
•
Disables disk enclosure PS 1
•
Disables the left power supplies in the controllers
PDU B
PDU B connects to AC PDM B1–B4.
A PDU B failure:
•
Disables the power distribution circuit
•
Removes power from the right side of the rack
•
Disables disk enclosure PS 2
•
Disables the right power supplies in the controllers
PDMs
Depending on the rack, there can be up to eight PDMs mounted in the rear of the rack:
•
The PDMs on the left vertical rail connect to PDU A
•
The PDMs on the right vertical rail connect to PDU B
22
EVA6400/8400 hardware