HP BladeSystem p-Class 1U manual Redundant AC power

Figure 1. HP BladeSystem p-Class 1U power enclosure bays

Table 1. HP BladeSystem p-Class 1U power enclosure bay descriptions

Item	Description	Configuration
1	Power supply bay 1	Bus A
2	Power supply bay 2	Bus A
3	Power supply bay 3	Bus A
4	Power supply bay 4	Bus B
5	Power supply bay 5	Bus B
6	Power supply bay 6	Bus B

To implement a redundant configuration using power supplies in the 1U power enclosure, one or more of bays 1 through 3 and an equal number of bays 4 through 6 must be populated with a power supply.

Redundant AC power

For redundant AC power, bays 1 through 3 must be supplied with AC power from a different branch circuit than bays 4 through 6. Each bay must be supplied with single-phase AC power according to the specifications in the QuickSpecs, which are located at http://h18004.www1.hp.com/products/quickspecs/12330_div/12330_div.html. The branch circuit should have adequate capacity to handle the peak current demands of a fully populated 1U power enclosure when attached to a fully populated server blade enclosure.

If only one side of the power enclosure is populated with power supplies, the power subsystem is not redundant. If AC redundancy is not required, three power supplies located in any three bays can provide adequate power for a fully loaded server blade enclosure.

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