User's Manual

Power Management 219
8
Power Management
Overview
The PowerEdge M1000e server enclosure was designed to be the most power-
efficient modular server in the market. It was designed to include highly-
efficient power supplies and fans, has an optimized layout so that air flows
more easily through the system, and contains power optimized components
throughout the enclosure. The optimized hardware design is coupled with
sophisticated power management capabilities built into the Chassis
Management Controller (CMC), power supplies, and iDRAC to allow
customers to further enhance power efficiency and to have full control over
their power environment.
The Dell PowerEdge M1000e modular enclosure takes in AC power and
distributes the load across all active internal power supply units (PSUs). The
system can deliver up to 7928 Watts of AC power that is allocated to server
modules and the associated enclosure infrastructure.
NOTE: Actual power delivery is based on configuration and workload.
The Power Management features of the M1000e help administrators
configure the enclosure to reduce power consumption, and to tailor power
management to their unique requirements and environments.
The M1000e enclosure can be configured for any of three redundancy policies
which affect PSU behavior and determine how chassis Redundancy state is
reported to administrators.
AC Redundancy mode
Data centers with dual AC grids should choose the six-PSU configuration,
and enable the AC Redundancy policy in the CMC. Mirrored banks of PSUs
in the M1000e ensure the modular enclosure can withstand the failure of an
entire grid without interruption of power.
PSUs 1-3 must be connected to one grid, and PSUs 4-6 to the other. Since
three PSUs can power the entire enclosure, this configuration is unaffected by
the complete failure of one AC grid without loss of power to the enclosure. In