|
|
|
|
|
I/O fencing protects the data on shared disks. When nodes in a cluster detect a change in cluster membership that could indicate a split brain condition, the fencing operation proceeds to determine which nodes are to retain access to the shared storage and which nodes are to be ejected from the cluster, thus preventing possible data corruption. The Veritas Cluster Server User's Guide describes I/O fencing concepts in detail. The installvcs program installs the VCS I/O fencing driver, VRTSvxfen.
Note
Symantec strongly recommends that you use VCS I/O fencing to deter potential split brain scenarios in your cluster.