User's Manual

262 Power Management
Limits
• The CMC does not support automated power-down of a lower priority
server to allow power up of a higher priority server; however, you can
perform user-initiated power-downs.
• Changes to the PSU redundancy policy are limited by the number of PSUs
in the chassis. The M1000e chassis ships with one of two configurations:
three PSUs or six PSUs. You can select any of the three PSU redundancy
configuration settings listed in "Redundancy Policies."
Power Supply and Redundancy Policy Changes in System Event Log
Changes in the power supply state and power redundancy policy are recorded
as events. Events related to the power supply that record entries in the system
event log (SEL) are power supply insertion and removal, power supply input
insertion and removal, and power supply output assertion and de-assertion.
Table 8-4 lists the SEL entries that are related to power supply changes.
Events related to changes in the power redundancy status that record entries in
the SEL are redundancy loss and redundancy regain for the modular enclosure
that is configured for either an AC Redundancy power policy or Power Supply
Redundancy power policy. A modular enclosure that is configured in the Non
Redundant power policy records a SEL entry for insufficient resources, Non
Redundant power policy is recorded when the functional power supply count
drops below the enclosure minimum of three power supplies. Similarly, when
the functional power supply count is restored, a SEL entry for sufficient
resources, Non Redundant power policy, is recorded. Table 8-5 lists the SEL
entries related to power redundancy policy changes.
Table 8-4. SEL Events for Power Supply Changes
Power Supply Event System Event Log (SEL) Entry
Insertion power supply presence was asserted
Removal power supply presence was de-asserted
AC input received power supply input lost was de-asserted
AC input lost power supply input lost was asserted
DC output produced power supply failure was de-asserted
DC output lost power supply failure was asserted