I have a PR4100 (2018) with 3x6TB (64MB Cache) in a RAID-5 array. One disk crashed and replaced, then another disk crashed and replaced with the successor of the disks I have because the older disks aren’t available anymore. This disk has 256MB of cache. Volume rebuilt and everything seemed fine, until I updated the firmware and rebooted. After that, the volume couldn’t be mounted.
Problem temporarily solved by removing the third new disk; now I’m running a degraded RAID-5 array.
So now I’ve bought 4 12TB disks and I was wondering if anyone could tell me if this plan of mine would work:
The 6TB disks are in bays 1-3 (1 and 2 since I’m down one disk). I’m planning on inserting one 12TB disk in bay 4 and create a new volume of 12TB. Then I’m planning on copying everything over from Volume_1 to that disk (Volume_2) after which I’ll delete the first volume and insert the other 3 12TB disks in bays 1 through 3, then making it a 4-disk RAID-5 array.
Does anyone have any experiences in doing something like this? Would that work?
Thanks in advance!