HP 3000 Enterprise Virtual Array - Manual (Page 129)

Storage System Hardware Components
129 Enterprise Virtual Array 3000 User Guide
— The rack PDUs are connected to different wall receptacles.
— The drive enclosure power supplies on the left (PS 1) connect to a power
source (PDM or PDU) on the left with a gray power cord.
— The drive enclosure power supplies on the right (PS 2) connect to a power
source on the right with a black power cord.
— Each controller enclosure connects to a power source on the left with a
gray power cord and to a power source on the right with a black power
cord
.
The configuration provides complete power redundancy and eliminates all single
points of failure for both the AC and DC power distribution.
Enterprise Racks Power Distribution Components
AC power is distributed to an Enterprise rack through a dual Power Distribution
Unit (PDU) assembly mounted at the bottom rear of the rack. Each Enterprise
rack has either a 50- or 60-Hz, dual PDU mounted at the bottom rear of the rack.
Note: The major difference between the two PDU types is the cable power connector.
■
The standard 50-Hz PDU cable has an IEC 309, 3-wire, 30-A, 50-Hz connector.
■
The standard 60-Hz PDU cable has a NEMA L6-30P, 3-wire, 30-A, 60-Hz
connector.
If these connectors are not compatible with the site power distribution, you must replace
the PDU power cord cable connector.
Each of the PDU power cables has an AC power source specific connector. The
circuit-breaker-controlled PDU outputs are routed to a group of four AC
receptacles. See
Figure 56 . The voltages are then routed to PDMs, sometimes
referred to as AC power strips, mounted on the two vertical rails in the rear of the
rack