HP StorageWorks Virtual Array 7000 Family User and Service Guide (January 2005)

Table Of Contents
34 Product Overview
Power Modules
The disk enclosure is shipped with two fully redundant power modules. Each
power module contains:
An autoranging power supply that converts ac input power to dc output
power for use by the other array components. The power supplies share the
power load under non-fault conditions. If one power supply fails, the other
supply delivers the entire load to maintain power for the array. Each power
supply uses a separate power cord. Both power supplies can be plugged
into a common power source, or each supply can be plugged into a
separate circuit to provide power source redundancy.
One internal blower, which provides airflow and maintains the proper
operating temperature within the array enclosure. If the blower fails, a fault
will occur. The other power module will continue to operate and its blower
will continue to cool the enclosure. Even if a power supply fails, the blower
within the power module will continue to operate; dc power for the blower
is distributed from the midplane.