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Author Topic: Recovering from RAID1 drive failure  (Read 19948 times)

ScottWells

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  • Posts: 3
Re: Recovering from RAID1 drive failure
« Reply #15 on: August 27, 2010, 01:26:00 PM »

For what it's worth, this procedure didn't work for me.  I was still getting prompted for the RAID level when logging into the NAS.  My DNS-323 was on 1.06 so I upgraded it to 1.09 and now things look fine (fingers crossed!).
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irha

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  • Posts: 18
Re: Recovering from RAID1 drive failure
« Reply #16 on: November 07, 2010, 09:55:20 AM »

I had a problem with my dns-321 not being able to rebuild array after replacing the failed drive. In my case, the web UI was getting stuck even before beginning the array (with no drive activity going on, as described in this post). I was able to rebuild the array manually using mdadm as described by OP, but I had to get fdisk2 from this thread first to be able to create partitions. After that I tried running hd_verify as posted by m2k3423, but got errors for missing /mnt/HD_b4, so I did the below two additional manual steps:
- Create filesystems on /dev/hdb1 and /dev/hdb4
- Mount /dev/hdb4 as /mnt/HD_b4

After this, hd_verify went through fine and the web UI seems to be happy. Now I am still concerned that there might be something left to be done (e.g., what is the role of /dev/hdb1 ?) and so would like to check with experts here. I would appreciate any further guidance.
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