Key changes in the Unraid 7.3 update

In Unraid 7.3, the ZFS pool management UI was improved and VM disk performance-related options were added. This summarizes the items that affect practical work.

Key changes

• Improved UI for managing at the ZFS dataset level
• Expanded VM disk cache mode options
• More flexible specification of Docker image storage location

Check before updating

First check whether the array is in a healthy state and whether parity sync has completed. There were reports of ZFS-related issues in early 7.x versions, so checking the release notes is necessary.

For systems in operation, the basic rule is to back up before updating. This is especially true when the cache pool configuration is complex.