Symmetrix DMX-3 power subsystems
87
Symmetrix DMX-3 Hardware
Storage bay power
subsystem
components
The storage bay power subsystem consists of the drive enclosure
power supply/ cooling modules and the BBU modules that provide
the battery backup for the drive enclosures. The A side BBU modules
receive their power from the A side PDU and support both the A and
B side drive enclosures. The B side BBU modules receive their power
from the B side PDU shown in Figure 14 on page 88, and support
both the A and B side drive enclosures. Two PDPs, one for each zone,
provide a centralized cabinet interface and distribution control of the
AC power input lines when connected to the storage bay PDUs. The
storage bay PDPs contain the manual On/Off power switches, which
are accessible through the rear door. The DMX-3 storage bay PDPs
are available in three-phase Delta and three-phase WYE
configurations.
Symmetrix DMX-3
power configurations
The Symmetrix DMX-3 power subsystem supports three-phase Delta
or three-phase WYE configurations. Each bay requires two separate
PDUs—one for Zone A and one for Zone B power for the Symmetrix
DMX-3 system bay and each storage bay shown in Figure 14 on
page 88.
Note: “Power and cooling data” on page 269, “Electrical specifications and
power requirements” on page 270, and “Symmetrix DMX-3 power
requirements” on page 288 contain more detailed information on the
Symmetrix DMX-3 power requirements. The EMC Symmetrix DMX-3 Physical
Planning Guide available on the EMC Powerlink website provides additional
information.
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