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тАО04-20-2017 06:58 AM
тАО04-20-2017 06:58 AM
Array rebuild
One of our servers has a problem with the discs. One drive has totally failed, and two more are in a predictive fail state. The server is configured RAID 5.
I got new discs shipped out by HP which arrived today. I swapped out the failed drive with one of the new drives, but I cannot see in the array config utility if it is actually rebuilding the array. It still registeres the disc as failed. However, when I plugged the new disc in, all the discs (including the new one) lit up blue.
About 15 minutes later, only disc 3 was blue. Another few minutes after that, all the discs went blue again. I was under the impression the array should rebuild automatically when the failed disc was replaced? It shows in the configuration utility as being in "interim recovery mode" but other than that, I cannot see a way to confirm if the array is rebuilding.
The server in question is an HP Proliant DL380 Gen 8.
Can anyone offer any advice? Thanks
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тАО04-20-2017 07:29 AM
тАО04-20-2017 07:29 AM
Re: Array rebuild
What exact HPE Smart Array RAID Controller your Server is equipped with (just to have a complete picture to start from)?
I'm not an HPE Employee
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тАО04-20-2017 07:32 AM
тАО04-20-2017 07:32 AM
Re: Array rebuild
Hi, its an HP Smart Array P420i array controller.
Thanks
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тАО04-20-2017 07:39 AM - edited тАО04-20-2017 07:41 AM
тАО04-20-2017 07:39 AM - edited тАО04-20-2017 07:41 AM
Re: Array rebuild
Supposing Array member disks are (included the failed one and the new one you ordered as replacement disk) Hot-Plug capable (and all with the correct size, especially the ordered one as replacement), was the swap failed disk->out | replacement-new disk->in happened online or offline (with Server powered off)?
Read (from HPE Smart Array Controllers User Guide) under Replacing drives paragraph:
I'm not an HPE Employee
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тАО04-20-2017 07:46 AM
тАО04-20-2017 07:46 AM
Re: Array rebuild
Hi, the server was power on and running when the swap-over occurred. It was not powered down. I took out the disc that has failed completely and simply replaced it with one of the new discs from HP.
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тАО04-20-2017 08:06 AM - edited тАО04-20-2017 08:09 AM
тАО04-20-2017 08:06 AM - edited тАО04-20-2017 08:09 AM
Re: Array rebuild
Isn't Automatic Data Recovery enabled? Automatic Data Recovery should be enabled by default so the HPE Smart Array RAID Controller will start the rebuild automatically (you just swapped the failed drive with the new one without changing the disk bay where the failed one initially was):
I'm not an HPE Employee
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тАО04-20-2017 08:54 AM
тАО04-20-2017 08:54 AM
Re: Array rebuild
Where can I check if ADR is enabled?
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тАО04-20-2017 09:42 AM
тАО04-20-2017 09:42 AM
Re: Array rebuild
What is the status of the logical disk in the array? Are they rebuilding or still degraded?
You may have to set the unused drive as a "auto-replace" hot spare in order for it to be used to rebuild the array.
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тАО04-20-2017 09:59 AM
тАО04-20-2017 09:59 AM
Re: Array rebuild
The other three discs; two are still in predictive fail mode, while the third disc is all ok.
Because the other discs haven't completely failed yet I am sure the array can still be rebuilt on to the new discs.
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тАО04-20-2017 10:03 AM
тАО04-20-2017 10:03 AM
Re: Array rebuild
So the new disk does not show up as unused/unassigned? What does it show up as?