Understanding High Availability Fencing

The Fabric Manager high availability cluster includes daemons to fence a misbehaving Fabric Management Platform as determined by the cluster software. These daemons use the Intelligent Platform Management Interface (IPMI) to control the integrated remote access component, which provides the remote power operations as required by the cluster. This capability enables one cluster node to reboot the other node to protect against data being written to or from both platforms simultaneously, which can cause data corruption.

The cluster operations wiring for the configuration permits automatic takeover of Fabric Manager resources in the event of a node failure, or if the card that provides access to the ClearPath Forward Management LAN (FM LAN) fails.