I've tried to wrap my head around doing this a couple times now and I never seem to get a full understanding enough to be confident to move forward. I just upgraded UNRAID to 7.2.2 and I got the banner letting me know how urgent it is to upgrade the format on my RESERFS drives to something like XFS. So, I really need to force myself to do it now.

I think the good news is, Unraid appears to now have something built-in that appears to make this conversion easier (or at least I think so). The MIGRATION GUIDE it points to seems a little more straight forward than the directions I was attempting to understand in the past.

My first question is, "Can I follow this migration guide given the limited amount of space I have on my Unraid Server? Here is a screenshot of the space I have available:

I do have an extra 4TB drive available. Should I maybe switch it out with the 2TB drive first to give me more space?

The migration guide is as follows. If I do have enough space and can follow these steps, can I really not do step 3 and just leave the files where they are once I've completed the format change on all 3 drives?

Thank you for any help.

tower-diagnostics-20251212-1327.zip

Edited December 12, 2025Dec 12 by JP
Typo

12 hours ago, JP said:

"Can I follow this migration guide given the limited amount of space I have on my Unraid Server?

Yes, as long as there's enough space to empty one of the reiserfs disks to the other ones at a time, which appears to be the case, as long as you are not excluding disks for some of the shares.

I just wanted to thank @JorgeB as well as the Unraid developers for how much easier they made this format change compared to other guides. I struggled with some of the earlier guides, but "emptying disks" and leveraging Mover to help automate this process really helped. Now all my drives are XFS and I think everything is working fine again (at least from what I can tell). Thanks again.