Power failure during rebuild - next steps for recover?

[Idaho121]

Hey all,

Was in the middle of upgrading my parity disk. I had unassigned the old one, assigned the new one, and rebuilt parity - that completed.

Then, I unassigned a 4TB data drive, reassigned the old 10TB parity drive to that slot, and was rebuilding. All dockers off, nothing should have been writing to the array.

Then, my power went out (it was past the 4TB mark on the rebuild, but I don't think that makes a difference).

First step - order a new UPS, as the CyberPower one completely failed and went down with the power outage immediately. Check.

Second step - This is where I'm uncertain. I think the right move is to boot up (array isn't set to auto start), unassign 10TB drive, reassign 4TB drive, rebuild parity, and then restart the process of swapping the drive, but I don't know for sure.

Also, I know I'm dumb for this, but I didn't save a backup of anything before doing the rebuild.

Thanks for any advice.

[JorgeB]

Just power back on and it should start rebuild the data disk (from the beginning), if it doesn't or if there is any unmountable disk please post diagnostics.

[Idaho121]

Rebuilding, thanks!