Iomega StorCenter ix2-200 device fails when powered

This is about an Iomega/Lenovo device, Iomega StorCenter ix2-200

When I power on the ix2 the ‘!’ light blinks red. I can’t connect to it…, under ‘dashboard’ everything seems as usual except the pie chart showing space usage is not there. … when I click on Users or Shared Storage it says Disks Not Ready. The selected function is not available due to the state of the disks.

… what to do from here?

Although it is not specified anywhere in the post, further discussion suggests there are two disks in the NAS. Another crucial bit of information missing is the RAID level. There are three possibilities with two disks:

  • RAID1, when two disks are identical;
  • JBOD, when the data is first stored on one disk, then once the first disk fills up, the second one is used;
  • RAID0, when the data is interleaved between two disks.

Red exclamation sign on a StorCenter indicates either a non-recoverable disk failure, or some kind of severe logical failure.

First thing to try, as rightly suggested in follow-ups to the original post, is to try booting with just one disk. This works if the array is RAID1. Two tests must be done because even with RAID1, there is an even chance of leaving the bad disk in.

If the array is RAID0 or JBOD, and the drive ha indeed failed, the drive must be repaired first. If there is no mechanical problem, but rather some logical issue, we can help you with RAID0, but not with a JBOD.

 

Know your RAID level

One ReadyNAS owner seems to be confused about what RAID level is (and was) used on its ReadyNAS Duo (full story).

I have a readyNas Duo with 2x 1Tb disks in raid. … I had to reset the NAS, unfortunally i holded the reset button to long so the disks are wiped clean….

After the reset i upgraded to the latest firmware and let the disk sync.

… is my data lost, or are there way’s to recover the data?

i tried to recover my data with [RecoverMyFiles] …without success…I checked only one disk since i wanted to have the other one as an backup to be examined by a company … [and they] … think my disks were not in mirror but in striping mode…I can’t check this ofcorse but i never saw more totall space then the size of one disk.

This looks real bad. There are two things we know for sure:

  1. this is ReadyNAS Duo, and
  2. there are two physical drives.

and that’s all. There are four conflicting bits in the above quote relevant to the RAID level.

  1. [did] let the disk sync suggests RAID1. RAID0 does not need any kind of sync.
  2. wanted to have the other one as an backup indicates owner’s belief that the array is RAID1
  3. company … thinks … striping mode, that’s pretty straightforward.
  4. never saw more totall space than the size of one disk, which again points to RAID1.

Problem is, it is fairly easy to recover data either from a RAID0 or from a RAID1. Home NAS Recovery, as one obvious example, can work either way, and does not even need to know the RAID level beforehand. However, if the initial array was RAID0, and then after a reset the NAS switched to RAID1 mode and copied contents of the one disk to the other disk, there is nothing left to recover.

 

Buffalo Nas broken – data recovery

The story on Tom’s  goes like

[I] have a Buffalo NAS (Linkstation duo) which is broken because of thunder I guess.I’m trying to recover my data by plugging the 2 disks in my Linux Computer through USB Adapter.

I did a rebuild of the raid array (RAID0: striping) with mdadm… I can see the files but they seem to be corrupted…the preview is good but not the full picture

Do you think there is a solution?

What I have to say about this

  1. Strictly speaking, NASes do not typically break because of thunder. The problem is in fact lightning, which causes electrical transients in a power grid.
  2. A RAID with all files corrupted, including the case where small previews are OK, but full-resolution images are broken, is the most common case of incorrectly assembled RAID. He got his parameters wrong. RAID level seems correct, because LinkStation Duo does indeed use RAID0 by default.
  3. Linux manual recoveries require precise knowledge of the RAID parameters. One possible solution, though, is to switch to Windows and use Home NAS Recovery. The case seems trivial, at least from the information available.