Xsan 2.2: Long DNS names may cause Xsan volume failover

An Xsan volume may failover unexpectedly at the beginning of each hour (when summary statistics are written to the Xsan volume log) if any Xsan client of the volume has a very long DNS name.

For each Xsan system's metadata IP address, configure a DNS PTR record (or reverse DNS name) with a maximum length based on the Xsan metadata controller version in use:

• Xsan 2.2.2 or 2.3: 114 characters

• Xsan 2.2.1 and earlier: 57 characters

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If an Xsan volume continues to failover at other times after shortening all metadata DNS names to the limits shown above, see Troubleshooting Xsan volume failover issues.