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How do I recreate a broken mirror?

I have an IBM Server using with 2 identical drives. They are split into 3 partitions. 30GB, 50GB 70GB, C, F, O respectively. After a power cut, I look and there are 6 partitions. In Disk manager, the 2 drives are shown with identical sizes. When a created a new folder under C it was not reflected on it's mirrored counterpart. In device manager I have the following;
Intel 82801GB Serial ATA Storage Controller - 27C0
Intel 82801GB Ultra ATA STorage Controller - 27DF. I do not think these are raid controllers.
It would seem that luckily, I have lost the RAID controller but my data is still safe and the Server still boots. What can I do to recreate the mirror?

cuziyq

Unfortunately, having booted the machine with the two devices disjointed means that they are now out of sync. The first thing you need to do is toast (wipe) the other drive (the one that does NOT have C: on it).

Next, you need to re-create the mirror using whatever means used the first time. If the server has a hardware RAID controller, use the BIOS or the RAID management utility to re-create the mirror. If it's the onboard Intel ICHxR RAID controller, you may need to enter the server's BIOS and switch the controller back to RAID mode instead of Legacy or AHCI mode (the power outage could have zapped your CMOS settings).

If it was a software RAID, then you just use Disk Manager to re-RAID them.

All of it depends on how your machine was configured in the first place.

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jdietrich

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jcp-it

ASKER

I went into the bios, enbled raid and it started to synchrnise straight away. I looked in the RAiD config and it said both drives were healthy and optimal. But the server did not boot.
Disconnect Drive 2, and it ran a checkdisk and boots (complaining of a service not starting).
How do I know go about connecting Drive 2 and mirroring.

jcp-it

ASKER

Hello

Sorry for the delay in replying and I appreciate the advice given.
There was a few fairs at the clients site so making changes to IT system was not wise as downtime would not be acceptable.

So I let it run off 1 drive for a while. I loaded IBM's ServeRaid 8. I created an image backup using Acronis to save my bacon. I connected the 2nd drive and in the RAID Utility checked that all disks werew present and that it was set to mirror. I was given the option to rebuild array in BIOS or for rebuild during operation in the ServeRAID utility in Windows. It is still rebuilding as I write this.