Our exchange server failed this morning. The error message suggested a corrupt Active Directory database, and attempts to repair that have failed (following steps outlined in http://support.microsoft.com/?id=258062
). Unluckily we don't have a system state backup.
What we do have is a complete another system with a mirror copy of the system disk created about a month ago. Both systems are as follows:
Win/2000 SP4 with all patches.
Exchange Server 2000 SP3
Identical except for network card and video card hardware
We also have a backup of the Exchange store on the production (failing) computer done this morning before the failure. It was created with NTBackup.
What I tried to do is to restore this recent backup copy of the Exchange Store to the backup server (using NTBackup restore option) after copying the backup.rbf file to the backup server.
The restore seems to go through OK (takes 30 mins) but then when I try to mount the two stores (mailbox and Public), it fails with an error message.
I found the folowing error message in the event log that seems relevant:
"The MAPI call 'OpenMsgStore' failed with the following error:
The Microsoft Exchange Server computer is not available. Either there are network problems or the Microsoft Exchange Server computer is down for maintainance.
The MAPI provider failed.
Microsoft Exchange Server Information Store.
ID no. 8004011d-0526-00000000
(Alternately, is there maybe a way to restore the Active Directory from the backup server to the production server? The backup server has a disk that was crreated using Ghost as an exact copy of the production disk about a month ago).