Note: |
I/O Fencing is completely automatic. You do not need to configure anything manually to utilize I/O Fencing. |
I/O Fencing protects the data on shared disks when nodes in a cluster detect a change in the cluster membership that indicates a split-brain condition.
The fencing operation determines the following:
The nodes that must retain access to the shared storage
The nodes that must be ejected from the cluster
This decision prevents possible data corruption.
In the event of a network partition, SFW I/O Fencing technology uses the outcome of Microsoft Failover Clustering arbitration process to choose which nodes to allow access to the shared storage and which nodes to eject from the cluster.