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Remove Disk from RAID-5

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3 replies

by jeremy the it guy 1 view

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I have a 4 disk RAID-5 setup that has a faulty drive in it. It says "Healthy(With Errors)" but none of the errors come up during boot or during chkdsk. What I want to do, if possible, is take the drive out of the RAID-5 configuration with no loss of data. Can this be done? If so, how? Thanks, Jeremy

3 replies

by darts32

Yes this can be done. Just replace the drive and either it will rebuild itself or you can do it manually depending on the controller used. Data loss will only happen if 2 or more drives are bad.

Good luck.

by an_it_guy

Adding to previous poster: identify the faulty disk of the four, shutdown, and replace the faulty one.
If not sure which is the faulty one in your array, if you remove one of the healthy ones, it might show that your RAID5 failed. You might need to shutdown & try another one in that case, until you find the correct 'faulty' disk. This should not loose any of your data tho'(unles one more fails).
Once you replace the faulty one, the RAID5 wil be rebuild on its own and the status should not show "With Errors" anymore.
In case you dont have a replacement readily available, you can still remove the faulty one and continue using the machine, but until u add the 4th one, the disks & RAID5 will not be "Redundant" anymore!
Best of luck.

by arne.tredal

Before you do anything else; make sure you have a backup (Healthy - WithOUT errors)

Then go on and replace the faulty drive.

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