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CX3 hot spare replacing failed drive, but no IOs reported
We have a Clariion CX3-10 system with three RAID groups.
The first two each contain 5 disks and are configured as RAID-5. The 11th disk is configured in a separate RAID group as "Hot Spare".
Last week one disk failed and the hot spare was initiated.
From the NaviSphere point of view:
- There's still a fault on the array being reported
- But the hot spare claims to be "replacing bus 0 enclosure 0 disk 2"
Browsing through the Navisphere interface I don't see any actions it is prompting me to do.
At this point I -assumed- the hot spare was actively acting as a replacement for disk 2, assuring that RAID-5 redundancy was still intact.
But now the interesting part -- We use software that reports on disk usage (IOs, cache hit, response time, etc)
This shows that as soon as the failure was recognized, both the failing disk and the hot spare started a huge load of IO, indicating that the system was pro-actively copying all the data to the hot spare.
But as soon as this copy was done, the hot spare became dead-silent once again.
It is reported in the proper array (along with disk 0,1,3,4), but has not been used since. No IOs at all.
My questions are therefore:
Once a disk fails, and the hot-spare is initiated, should I (a) do anything else to restore full redundancy, and (b) do anything to allow the system to start using the hot-spare for actual disk IO?
Any tips or thoughts on this issue would be appreciated.
aramagedon1
5 Posts
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February 24th, 2015 10:00
This is the events screenshot:
aramagedon1
5 Posts
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February 24th, 2015 10:00
Yeah, sticker is scarry
... I'm awaiting for the delivery of the 2 x VNX 5200's and EMC will buy back that old bulky CX3-10 from us...
Sheron1
224 Posts
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February 24th, 2015 10:00
P-S : Write cache is disabled because one of your vault drive is faulted, once you replace it the cache will turn back ON.
Looking at the screenshot, I think on 02/20/2015 at 01:19:40 your copy to hotspare is completed.
Sheron1
224 Posts
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February 24th, 2015 10:00
Dont forget that sticker, keep it on the new drive. It scared the h@## outta me once.
aramagedon1
5 Posts
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February 24th, 2015 10:00
This is correct. Vault Drive failed. The status is removed. When I'm trying to Copy it to Hot Spare - it gives me this error and I'm not sure what to do next. When the vault drive failed I saw the message on the HS drive that it is Rebuilding but the status of the HS is not Vault. I purchased two disks and they are now on Bus 0 Enclosure 0 Disk 12 & 13 but their status is Unbound.Please advise.
aramagedon1
5 Posts
1
February 24th, 2015 10:00
Thanks much ,Sheron! yes, answer is yes to all questions .I just replaced the drive and it is equalizing now. Thank you for your help!!!