I've had a drive on my RAID5 array go bad. I replaced it, formatted the new one (GPT, since it's 3TB), and added it to the array using the webUI. Took a long time to sync, but it was working fine.
Then I got a SpareMissing event email, so I edited mdadm.conf to set spares = 0, and it was all good.
But recently, I had to reboot the server, and the array was back to 3 devices with a failed one (removed). So I re-added my new hard-disk, and waited for the resync to finish (again) - this time I didn't get the SparesMissing event email, but now I'm worried... will this happen again on reboot? It takes a long time to re-sync... using OMV 2.1.23 now.
My array (/dev/md127 - sda is the new drive):
Any help appreciated!