SeeDk
asked on
Virtual Disk RAID 0 - OMSA reporting it has bad blocks
Want to know what the best way is to deal with this.
To start off, I am copying the data to a stable drive since I think there is no way to recover from this without some or all data loss on the Virtual Disk.
One of the disk sis reporting there is failure predicted. Normally, I would just replace that disk and move on..but since this is reporting bad blocks I'm not sure.
Am I correct in thinking that if I just replace the faulty drive, there is a possibility that the bad blocks will still exist in the one that is not being reported faulty? And then the problem will persist after the rebuild?
Should I:
1. Replace both drives
OR
2. Repair the bad blocks (not sure how) and then replace only the faulty drive
In either case, I will lose all the data so I am copying it elsewhere first.
To start off, I am copying the data to a stable drive since I think there is no way to recover from this without some or all data loss on the Virtual Disk.
One of the disk sis reporting there is failure predicted. Normally, I would just replace that disk and move on..but since this is reporting bad blocks I'm not sure.
Am I correct in thinking that if I just replace the faulty drive, there is a possibility that the bad blocks will still exist in the one that is not being reported faulty? And then the problem will persist after the rebuild?
Should I:
1. Replace both drives
OR
2. Repair the bad blocks (not sure how) and then replace only the faulty drive
In either case, I will lose all the data so I am copying it elsewhere first.
ASKER
It is just some files, not the OS drive. The files are all backed up now.
I want to confirm that creating a new RAID with just one replaced disk is fine or if it is better to replace both.
The bad block error is what worries me.
I have read about bad block errors persisting in rebuilt arrays because there were bad blocks even on the "Healthy disks"
http://serverfault.com/questions/597860/recover-from-a-punctured-raid-array
Is there anyway to confirm the "Healthy" disk is actually good, or should I replace both to be on the safe side?
I want to confirm that creating a new RAID with just one replaced disk is fine or if it is better to replace both.
The bad block error is what worries me.
I have read about bad block errors persisting in rebuilt arrays because there were bad blocks even on the "Healthy disks"
http://serverfault.com/questions/597860/recover-from-a-punctured-raid-array
Is there anyway to confirm the "Healthy" disk is actually good, or should I replace both to be on the safe side?
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ASKER
Thank you everyone.
Predicted failure on the other hand means the disk is about to die, but it doesn't already have to be dead. So if there is any data left you haven't backed up yet for some reason, do that now. Once done, replace the bad disk and create a new RAID array, preferably not RAID 0 or 5, from your disks, then reinstall the OS or restore it from your backup if this is the array containing the OS. If it is a data array, just restore your data.