HI All,

I have been running unraid for around 5 years now and a number of my original drives are starting to fail so I'm going through the process of upgrading them to larger ones.

The 6 disks I had originally put in the machine were all 10TB and two of these were "Parity" and "Parity 2".

I have recently removed "Parity" as I needed more space and have consumed the original "Parity" disk as a data drive.

So this has left the "Parity 2" drive in place.

What I wanted to know is if I can rename "Parity 2" to be "Parity" and if so, how do I do it?

I have attached a pic of my drive setup for reference.

You can change it but would require a parity resync, and obviously only after disk4 is rebuilt.

Parity and parity2 use different algorithms to calculate their contents so a simple Rename is not possible.

If you change Parity2 to no device, and assign the drive instead to the Parity slot its contents will need rebuilding. The array would be unprotected until this completes.

5 hours ago, itimpi said:

Parity and parity2 use different algorithms to calculate their contents so a simple Rename is not possible.

If you change Parity2 to no device, and assign the drive instead to the Parity slot its contents will need rebuilding. The array would be unprotected until this completes.

Thanks. That makes good sense.

I will wait for disk 4 to finish and then I will change the drive to Parity’and this will sort things out.

If I wanted to ensure that I have a parity drive in place during this transition, can I add a second Parity 2 drive with a new disk and then once this Parity 2 drive is fully synced, unmount the original Parity 2 and move it to Parity 1?

No, you'd install the new drive as parity 1, resync, then remove parity 2.

Should probably have removed parity 2 instead of 1 back then, but now that's how it is.