![](https://help.apple.com/assets/5D0131D2680CE29F2382D85F/5D0131D7680CE29F2382D867/en_US/a9a9f482969d685609fc4993d682b206.png)
Expand Xsan storage in macOS Server
You can add free space to an Xsan volume by adding new LUNs (RAID systems) to a storage pool, then add the storage pool to a volume. You can also add volumes to a SAN at any time.
Expanding storage unmounts and remounts the volume on clients, so choose a time that’s convenient for your SAN users.
Thanks for your feedback.