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Broken Mirror Set Recovery

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5 replies

by gjjew

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I have an NT server with SCSI mirrored drives. The server just broke the mirror set. The faulty partition is the active partition. The server is still running. I read article Q113977 and Q120227 about recovering from a failed mirror System/Boot Partition and Booting From Mirror after Primary Partition Is lost. In both article it discuss using a Fault Tolerance boot floppy disk.

My question: Since the server is still running, why not use Disk Administrator to break the mirror set and change the active partition to the mirror drive system/boot partition? Shutdown the server. Change the ID of the mirror drive to "0". Remove the faulty drive and replace.

Thanks

George Jew

5 replies

by pmirlekar

If u r using software mirror then yes u can brake mirror add disk & recrate .
If u r using hardware raid with hotswapable disk then u just remove fault disk & raid will recreate miror.
MOST IMPORTANT DO COMPLETE OS BACKUP IN 2 TAPE .

ALL THE BEST

by cscnet

I guess you alredy know, but make sure you Backup.

I am not sure I understand the question, forgive me if I did. But try KB article (Q119467), this should help you create the FT floppy and boot the correct partition. NT should have asked you to make one when the mirror was created. If it's software (NT) based you should be able to reset all the boot settings using the boot disk a folling the KB articles.

If it is a hardware based RAID controller. Check the documentation for the controller, some are hotswappable some have rebuild utilities and so on.

Good luck

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