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Mirroring Drives

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5 replies

by nhoek

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We are having a problem mirrror a partition on our Exchange Server. We had one drive in our mirror set crash and had to put a new drive in. The drives are devided into three equal sizes C,D and L. Our mail sits on Drive L (the Priv.edb and Pub.edb files). Now the C and D drive mirror with out any problems but drive L will not mirror, we have tried it with the services running and shut down.

The even log shows two errors which I can not find anything about.
1st.
Event ID:23
Source Ftdisk
Description: Initialization of mirror failed

2nd.
Event ID:7
Source: Ftdisk
Description: The fault tolerance set containing device \Device\Harddisk0\Ft3 has been disabled.

Any ideas or are there any tricks to mirroring a drive containing mail???

5 replies

by cavedweller

This seems obvious but I thought I'd suggest it anyway. Is the remaining unallocated space on the new drive at least as big as your L drive.

For a variety of reasons, some drives have a slightly lower capacity that others.

by dbesenho

mirroring doesn't care what is on the drive, it is a physical process. the error messages are telling you that there is a physical problem, in this case, it's not working, because mirroring on that drive for whatever reason is turned off. take a look at your settings, either they are incorrect, or there is a problem with the mirror drive. try breaking the mirror and re-establishing it.

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