HP Surestore Disk Array 12h and FC60 - Manual (Page 32)

32 Disk Enclosure Components
Power Supplies
Redundant, hot-swappable 450-watt power supplies convert wide-ranging AC voltage from
an external main to stable DC output and deliver it to the backplane. Each power supply
has two internal blowers, an AC receptacle (A in
Figure 7 ), a cam handle (B) with locking
screw, and an LED (C). Internal control prevents the rear DC connector from becoming
energized when the power supply is removed from the disk enclosure.
Figure 7 Power Supply
Note
Although it is possible to operate the disk enclosure on one power supply, it is
not recommended. Using only one supply creates a single point of failure. If the
power supply fails, the entire enclosure is inaccessible. To maintain high
availability, both power supplies should be used at all times, and a failed supply
should be replaced as soon as possible.
A AC receptacle
B cam handle
C LED
NOTE: LED position varies.