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X-RAID (RAID 5) Recovery Problems - ReadyNAS NV+ (RND4210) #27270843
My ReadyNAS had 3x 2TB HDD's and was working fine. It was configured for X-RAID and my understanding is that with 3 hard drives it behaves as a RAID 5 configuration where any one of the three drives...
Disk 2 (your SeaGate disk) is the dedicated parity disk.
However it looks like this problem may be simpler than I thought.Your OS partition is 100% full (this is probably why it was still stuck on booting even after replacing the failed disk)
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/hdc1 1.9G 2.0G 560k 100% /
# du -csh /var/log/frontview/error.log
1.4G /var/log/frontview/error.log
That log was last updated back in June and contains errors related to the http/s service. It's typically not a very important log so I just emptied it.
X-RAID on the v1 uses RAID-4 actually with a dedicated parity disk. The way forward does depend on which disk is the dedicated parity disk.
Does it still get stuck on booting if you try booting with just two disks installed (i.e. no disk in slot 3)?
What disks were in the NAS when you last did a factory reset (wipes all data, settings, everything) and in which drive bays?
Yes X-RAID is designed to survive a single disk failure but there are other problems that it cannot protect against.
If data is stored on just the one device then it isn't backed up. RAID and backup are two different things.
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