Exchange 2003sp2 - Online Exchange Ntbackup failing with error

Hi Experts,
My client runs Exchange 2003 SP2, on a MS 2003 Server SP1. We backup using Ntbackup.
The backup of Exchange has been failing with the following errors (a restart of the server didnt help, its been running OK for several years until recently):

Backup of "SERVER01\Microsoft Information Store\First Storage Group"
Backup set #3 on media #1
Backup description: "Set created 1/07/2008 at 2:48 PM"
Media name: "SERVER01-c-sysstate-Exch-Tue-Thu-Sat.bkf created 27/06/2009 at 9:01 PM"
Backup Type: Normal
Backup started on 27/06/2009 at 9:40 PM.
The 'Microsoft Information Store' returned 'Error returned from an ESE function call (d).' from a call to 'HrESEBackupRead()' additional data '-'The 'Microsoft Information Store' returned 'Error returned from an ESE function call (d).' from a call to 'HrESEBackupRead()' additional data '-'
The operation was ended.


In addtion, I can see the following that might help from the event log.

Event Type:      Warning
Event Source:      ESE
Event Category:      Online Defragmentation
Event ID:      705
Date:            28/06/2009
Time:            10:17:53 PM
User:            N/A
Computer:      SERVER01
Description:
Information Store (660) First Storage Group: Online defragmentation of database 'D:\Program Files\Exchsrvr\mdbdata\priv1.edb' terminated prematurely after encountering unexpected error -1018. The next time online defragmentation is started on this database, it will resume from the point of interruption.

Event Type:      Error
Event Source:      ESE
Event Category:      Database Page Cache
Event ID:      474
Date:            28/06/2009
Time:            10:17:53 PM
User:            N/A
Computer:      SERVER01
Description:
Information Store (660) First Storage Group: The database page read from the file "D:\Program Files\Exchsrvr\mdbdata\priv1.edb" at offset 9588981760 (0x000000023b8c4000) (database page 2341059 (0x23B8C3)) for 4096 (0x00001000) bytes failed verification due to a page checksum mismatch.  The expected checksum was 4861139407088000568 (0x43763c890b221e38) and the actual checksum was 8044009879196949827 (0x6fa2105dbb445d43).  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.


Any help much appreciated.
Best wishes,
Wilson
wilsonkjitAsked:
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Alan HardistyCo-OwnerCommented:
Have a read through the following link from Microsoft which will run you through some possible solutions / troubleshooting tips: http://support.microsoft.com/default.aspx?scid=kb;en-us;810411&Product=exch2003
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wilsonkjitAuthor Commented:
Thanks for reply. Yep it was disk errors. chkdsk fixed it.
Cheers for help
Wilson
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Alan HardistyCo-OwnerCommented:
Ah!  Good old chkdsk - fixes a multitude of sins.
Glad you are working again.  Thanks for the points.
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