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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.