White Papers

Failovers
7 PowerEdge MX7000 Management Module Redundancy | Document ID
operations if there are any observations of persistent issues on the active MM and want to remedy by
switching to standby MM.
- example racadm command: racadm changeover
- example racadm command: racadm racreset
Automatic (system initiated) failover occurs in the following scenarios
• Long running active MM may eventually develop and manifest failures (software and/or
hardware). MM high availability solution is designed to monitor and detect these failures and
initiate automatic failover if the solution determines the failure to be hampering normal functioning
of the MM.
• OME Modular update on a chassis with dual MM configuration stages the firmware update
orchestration in a sequence of steps that requires an automatic failover. Below is a high level
sequence of operations with MM1 as active and MM2 as standby:
- Update is initiated on Active MM1, MM 1 will push the update to MM2
- Standby MM2 is updated
- Automatic failover performed to transition the active role from MM1 to MM2
- The new active MM2 completes the update process by pushing the update to MM1
- Refer to “Management Module Firmware Update” whitepaper for more details
Failover using OME Modular GUI
Reset Management Module using OME Modular GUI