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02-26-2010 05:32 AM
02-26-2010 05:32 AM
RAID 1+0 in MSA1500
Hi,
We have a MSA1500 with 3 RAID 5 and one RAID 1+0 logical drives. Yesterday we had some kind of electrical power glitch that affected it; drives remained mounted but any access was impossible (I/O error).
We rebooted the node and rebooted MSA1500. Everything seems OK (all DSA20 disks are green as the MSA LEDs).
RAID 5 ones work fine. RAID 1+0 can be mounted and we are able to see the former directories but we have no info in them.
I append the ADU output where some errors can be seen.
Are those errors only logic? I mean ¿Can it be solved just recreating the volumen/logical drive?
Is there a way to recover the stored information?
Thanks in advance.
We have a MSA1500 with 3 RAID 5 and one RAID 1+0 logical drives. Yesterday we had some kind of electrical power glitch that affected it; drives remained mounted but any access was impossible (I/O error).
We rebooted the node and rebooted MSA1500. Everything seems OK (all DSA20 disks are green as the MSA LEDs).
RAID 5 ones work fine. RAID 1+0 can be mounted and we are able to see the former directories but we have no info in them.
I append the ADU output where some errors can be seen.
Are those errors only logic? I mean ¿Can it be solved just recreating the volumen/logical drive?
Is there a way to recover the stored information?
Thanks in advance.
1 REPLY 1
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03-01-2010 02:08 AM
03-01-2010 02:08 AM
Re: RAID 1+0 in MSA1500
All logical drives appear in OK status, no failures. No errors on disks for years.
The only hardware issue are the batteries on the MSA20:
Array accelerator status:
Temporarily disabled
Batteries are not fully charged
Battery pack 1 not fully charged
Battery pack 2 not fully charged
The fact that you can mount the LUN and see directories means that there's a filesystem on it. There's no way any hardware failure can alter a LUN in a way that it only deletes files and not directories.
I don't know what filesystem is being used on that LUN, and the MSA1500 does not know either and does not care. Try with a file recovery utility because probably the files alre already on the disks, but filesystem has been corrupted.
The only hardware issue are the batteries on the MSA20:
Array accelerator status:
Temporarily disabled
Batteries are not fully charged
Battery pack 1 not fully charged
Battery pack 2 not fully charged
The fact that you can mount the LUN and see directories means that there's a filesystem on it. There's no way any hardware failure can alter a LUN in a way that it only deletes files and not directories.
I don't know what filesystem is being used on that LUN, and the MSA1500 does not know either and does not care. Try with a file recovery utility because probably the files alre already on the disks, but filesystem has been corrupted.
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