Update: RAID 5 has gone from degraded (dropped one disk) to damaged (dropped second disk while rebuilding). See below.
Hi,
My N5200 became degraded today while trying to copy a large file. It has 5 identical 500gb drives, and the 1st drive has dropped out of the RAID 5 array. I've tried removing and reinserting the 1st drive several times, but the RAID does not start to rebuild. I've tried forcing it manually several times via the web interface, i.e. N5200>Storage>RAID>RAID Config>Check "Spare" and click "Add spare.">Click OK to confirm. This gives a message that "RAID Setting Successfully! All current active services will be stopped when RAID is being created" but the RAID still does not start to rebuild. Clicking OK at the "RAID setting successfully" message takes me back to the RAID page, which still shows Status: Degraded and no signs that the RAID is rebuilding.
I've also tried rebooting and repeating the above steps. How do add back the disk? Rebuilding the RAID from scratch is not an option as I have nowhere to store the data during the rebuild. This is my sixth time posting here for help in 18 months so I'm getting really annoyed with this thing.
Edit - After rebooting and clicking "add spare" for the fifth time it started to rebuild.