Author Topic: 1 failed drive in RAID 10 pair caused 2nd drive to be marked bad  (Read 1895 times)

nadamsmasd

  • Calf
  • *
  • Posts: 2
I have a situation with my Terastation TS-XEL. Drive 1 in the unit failed, and when it did so, drive 2 in the unit also got marked as bad. Initially, I thought that drive 1 was just locking up the controller for the pair, but after removing the failed drive, drive 2 is still marked as having an error. Since these two drives were one of the 2 mirrored pairs, the RAID array will not mount.

I have checked drive 2 with another computer, including doing a bad sector scan, and everything comes up good. My belief is that it's an issue with the partition tables or something else that got corrupted when drive 1 started failing.

Are there any tricks to getting this drive back online so I can rebuild the array?

davo

  • Really Big Bull
  • VIP
  • *
  • Posts: 6149
Re: 1 failed drive in RAID 10 pair caused 2nd drive to be marked bad
« Reply #1 on: June 25, 2018, 08:35:27 AM »
Do you have a backup?
PM me for TFTP / Boot Images / Recovery files  LSRecovery.exe file.
Having network issues? Drop me an email: info@interwebnetworks.com and we will get it fixed!

nadamsmasd

  • Calf
  • *
  • Posts: 2
Re: 1 failed drive in RAID 10 pair caused 2nd drive to be marked bad
« Reply #2 on: June 25, 2018, 08:42:53 AM »
Do you have a backup?

Fairly certain you know the answer to that already. The data was not deemed to be important until it was no longer available.  ::)

My alternate plan is to scan the drive with an undelete program and see if I can recover anything. But I thought I'd ask first if there was any way to get the Terastation to see the drive as "good" again.

oxygen8

  • The Oxy-genuine article
  • El Toro
  • ****
  • Posts: 417
  • Giving you some breathing space.
Re: 1 failed drive in RAID 10 pair caused 2nd drive to be marked bad
« Reply #3 on: June 25, 2018, 10:03:13 AM »
try ufsexplorer with the 2. disk