Exchange and Backup Exec error message... possible corrupt store
Hello all... We have an Exchange 2003 SP2 server on a Windows 2003 SP1 box. We use Veritas Backup Exec 9.1 to backup the server. I recently noticed our backups were failing and were getting this error in Backup Exec:
Backup - \\server\Microsoft Information Store\First Storage Group Access denied to database Mailbox Store (server).
Database or database element is corrupt
Access denied to database VIP Mailbox Store.
Database or database element is corrupt
I did find this Veritas KB article but don't think it applies to us. http://seer.entsupport.symantec.com/docs/265159.htm
In addition to the above error in Backup Exec.. we are getting this error in the application log when a backup runs:
Event Type: Error
Event Source: ESE
Event Category: Logging/Recovery
Event ID: 474
Date: 11/20/2007
Time: 6:10:29 AM
User: N/A
Computer: server
Description:
Information Store (2560) First Storage Group: The database page read from the file "F:\Exchsrvr\mdbdata\VIP Mailbox Store.edb" at offset 18970136576 (0x000000046ab55000) (database page 4631380 (0x46AB54)) for 4096 (0x00001000) bytes failed verification due to a page checksum mismatch. The expected checksum was 6865773602588631989 (0x5f4820b7128ca3b5) and the actual checksum was 1757556576004030283 (0x18641864d95f3f4b). The read operation will fail with error -1018 (0xfffffc06). If this condition persists then please restore the database from a previous backup. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.
There are multiple errors like the one above, referencing two out of our four stores. I have read this KB article from Microsoft. http://support.microsoft.com/kb/314917/
So my question is, do you think I have two corrupt stores? If so, what is the best way to deal with them while having minimal downtime for my users? Can I move all my users from the corrupt stores to a working store(assuming most mailboxes will move) then run an offline defrag? My last good backup was from Thursday, and I have all transaction log files since then.
Thanks
David
Backup - \\server\Microsoft Information Store\First Storage Group Access denied to database Mailbox Store (server).
Database or database element is corrupt
Access denied to database VIP Mailbox Store.
Database or database element is corrupt
I did find this Veritas KB article but don't think it applies to us. http://seer.entsupport.symantec.com/docs/265159.htm
In addition to the above error in Backup Exec.. we are getting this error in the application log when a backup runs:
Event Type: Error
Event Source: ESE
Event Category: Logging/Recovery
Event ID: 474
Date: 11/20/2007
Time: 6:10:29 AM
User: N/A
Computer: server
Description:
Information Store (2560) First Storage Group: The database page read from the file "F:\Exchsrvr\mdbdata\VIP Mailbox Store.edb" at offset 18970136576 (0x000000046ab55000) (database page 4631380 (0x46AB54)) for 4096 (0x00001000) bytes failed verification due to a page checksum mismatch. The expected checksum was 6865773602588631989 (0x5f4820b7128ca3b5) and the actual checksum was 1757556576004030283 (0x18641864d95f3f4b). The read operation will fail with error -1018 (0xfffffc06). If this condition persists then please restore the database from a previous backup. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.
There are multiple errors like the one above, referencing two out of our four stores. I have read this KB article from Microsoft. http://support.microsoft.com/kb/314917/
So my question is, do you think I have two corrupt stores? If so, what is the best way to deal with them while having minimal downtime for my users? Can I move all my users from the corrupt stores to a working store(assuming most mailboxes will move) then run an offline defrag? My last good backup was from Thursday, and I have all transaction log files since then.
Thanks
David
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ASKER
ETA: I.E. Should I put my transaction logs in a different folder... should I put the system path location on the same disk as my first storage group?
1. Second storage Group should be on New drive (if First Storage Group is sharing same drive for Log Files & database files).
2. It should not have any hardware errors.
3. While move mailbox lot of transaction logs files are created - make sure they do not fill both drives!!
All the best!!
2. It should not have any hardware errors.
3. While move mailbox lot of transaction logs files are created - make sure they do not fill both drives!!
All the best!!
ASKER
My first storage group is not sharing a drive for log files and db files, they are on separate drives. Unfortunately I don't have any other drives big enough to sore my database... will Exchange let me create another storage group on the same disk as the first one? I was thinking I would put my second storage group log files on the same drive as my first storage group log files, and my second storage group db on the same drive as the first storage group db.
How does that sound?
How does that sound?
Fine. Keep the dabases (of Second SG) in Dababases drive & log files (of Second SG) in log files drive.
But make sure there are no issues with HDD Media, BIOS version of Mother Board & RAID controller.
But make sure there are no issues with HDD Media, BIOS version of Mother Board & RAID controller.
ASKER
Yah i may run a disk check scan later... but my main concern is the stores right now. We have had this Exchange server for 4-5 years now with no problem. The last update I did was Exchange SP2 a while back(backups working during the time) so that is why Im hesitant to say its firmware or a driver issue. Thanks for your help, i'll post back how it went.
ASKER
We also have this error in our event log...
Event Type: Warning
Event Source: MSExchangeIS Mailbox Store
Event Category: General
Event ID: 1025
Date: 11/21/2007
Time: 3:08:04 PM
User: N/A
Computer: server
Description:
An error occurred on database "First Storage Group\Mailbox Store (NEWMAN)".
Function name or description of problem: SLINK::EcUpdate
Error: Read verification error
Does this error reinforce the idea that my store is corrupt? Does it change what I need to do any?
David
Event Type: Warning
Event Source: MSExchangeIS Mailbox Store
Event Category: General
Event ID: 1025
Date: 11/21/2007
Time: 3:08:04 PM
User: N/A
Computer: server
Description:
An error occurred on database "First Storage Group\Mailbox Store (NEWMAN)".
Function name or description of problem: SLINK::EcUpdate
Error: Read verification error
Does this error reinforce the idea that my store is corrupt? Does it change what I need to do any?
David
This issue may occur if a database page is corrupted. This may cause the Microsoft Joint Engine Technology (JET) database engine to stop responding. (http://support.microsoft.com/kb/329817/en-us)
ASKER
Thanks