Drive failures + replacements larger than parity

[akawoz]

Don't ask how I got in this situation 🤦‍♂️
 

In my 22 drive array (chassis can handle 24 drives) the largest drives I have are 8TB.

 

I have dual parity.

 

I have two failed drives.

 

I have 4x 10TB replacement drives.

 

I was hoping to rebuild the two failed drives onto 10TB and then swap the dual parity for 10TB but of course unraid won't allow me to install a replacement data drive larger than parity.

 

Is there any way at all to have unraid treat my 10TB replacement drives as 8TB temporarily or will I need to buy some 8TB drives (would really rather not).

 

Any clever ideas?

Edited April 25 by akawoz
more info

[itimpi]

What you need is the parity swap procedure which is designed for exactly this scenario.   It allows you to upgrade a parity drive to a larger one and then use the old parity drive to replace the failed data drive.