Dell Chassis Management Controller Version 3.0 for Dell EMC PowerEdge VRTX User's Guide

You can install a standby CMC that takes over if your active CMC stops functioning. The redundant CMC may be pre-installed or can be installed later. To make sure full redundancy or best performance, it is important that the CMC network is properly cabled.

Failovers can occur when you:

• Run the RACADM cmcchangeover command. See the cmcchangeover command section in the Chassis Management Controller for PowerEdge VRTX RACADM Command Line Reference Guide available at dell.com/support/manuals.
• Run the RACADM racreset command on the active CMC. See the racreset command section in the Chassis Management Controller for PowerEdge VRTX RACADM Command Line Reference Guide available at dell.com/support/manuals..
• Reset the active CMC from web interface. See the Reset CMC option for Power Control Operations that is described in Executing Power Control Operations.
• Remove the network cable from the active CMC.
• Remove the active CMC from the chassis.
• Initiate a CMC firmware flash on the active CMC.
• Have an active CMC that is no longer functional.
  NOTE In the event of a CMC failover, all iDRAC connections and all active CMC sessions are logged off. Users with logged-off sessions must reconnect to the new active CMC.