Preparing to configure I/O fencing on the new node

Last published : Sep 11, 2026
Perform the following tasks before you configure and start I/O fencing on the new node.
To prepare to configure I/O fencing on the new node
  1. Determine whether the existing cluster runs disk-based or server-based fencing mechanism. On one of the nodes in the existing cluster, run the following command:
\# vxfenadm -d
If the fencing mode in the output is SCSI3, then the cluster uses disk-based fencing.
If the fencing mode in the output is CUSTOMIZED, then the cluster uses server-based fencing.
  1. In the following cases, install and configure Volume Manager (VxVM) on the new node.
    • The existing cluster uses disk-based fencing.
    • The existing cluster uses server-based fencing with at least one coordinator disk.
You need not perform this step if the existing cluster uses server-based fencing with all coordination points as CP servers.
See the InfoScale InfoScale Installation Guide for installation instructions.