User's Manual

216 Power Management
Figure 8-1. Chassis With Six-PSU Configuration
Dynamic PSU Engagement
Dynamic PSU engagement is a configurable option that enables the CMC to
conserve power by powering-off unused PSUs and keeping them in Standby
mode in case more power is required. This saves power by increasing the
utilization of the PSUs that remain active so that they are used more
efficiently.
Factors that cause a single or set of PSUs to change to Standby mode include
the following:
• Module population
• The number of PSUs in the chassis
• The redundancy policy
• The capabilities and maximum efficiency point of the PSU configuration
PSUs