Red Hat Fence Agents is a collection of scripts to handle remote power management for several devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster.

fence_drac5 is an I/O Fencing agent which can be used with the Dell Remote Access Card v5 or CMC (DRAC). This device provides remote access to controlling power to a server. It logs into the DRAC through the telnet/ssh interface of the card.