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What is the root cause of corrupt exchange 2010 database search
Do you know what would cause the searches to fail on Exchange 2010 databases ?
Users are reporting that they are unable to find all items during a search. Helpdesk knows how to fix the problem by recreating the search files or to go around it by building new a database and copying the mailboxes. However we are trying to find out what is causing the frequent corruption. The Exchange server is Exchange 2010, Trend Micro Scan Mail for exchange mail filter, code two pro signature and Symantec Backup Exec 2015 remote agent also run on the server.
This link is a discussion of similar problems with DAGs and one user traced the problem to an anti virus product.
https://social.technet.microsoft.com/Forums/exchange/en-US/d0d84126-2b83-48bf-8eed-240465900430/repeatedly-corrupted-search-catalogs-on-multiple-dag-members?forum=exchange2010
Users are reporting that they are unable to find all items during a search. Helpdesk knows how to fix the problem by recreating the search files or to go around it by building new a database and copying the mailboxes. However we are trying to find out what is causing the frequent corruption. The Exchange server is Exchange 2010, Trend Micro Scan Mail for exchange mail filter, code two pro signature and Symantec Backup Exec 2015 remote agent also run on the server.
This link is a discussion of similar problems with DAGs and one user traced the problem to an anti virus product.
https://social.technet.microsoft.com/Forums/exchange/en-US/d0d84126-2b83-48bf-8eed-240465900430/repeatedly-corrupted-search-catalogs-on-multiple-dag-members?forum=exchange2010
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If you are getting consistent indexing corruption i would look in the logs to check and see if anything in there is standing out in regards to your database. Also what SP version and RU do you have installed for your Exchange 2010 environment? If you are way out I would consider upgrading to the latest version.
Will.
Will.
ASKER
Guy Questions
Are the Exchange Servers Virtual? ==> No
Have you checked the AV exclusion lists? ==> Yes, we did not find any scans.
Are you running a file level backup of the index DB directory? ==> Yes and my backup admin suspect that it is the problem.
Have you run any disk IO (read\write Delays, queues etc) monitors ==> Just ran Dell DPACK this weekend.
Are the Exchange Servers Virtual? ==> No
Have you checked the AV exclusion lists? ==> Yes, we did not find any scans.
Are you running a file level backup of the index DB directory? ==> Yes and my backup admin suspect that it is the problem.
Have you run any disk IO (read\write Delays, queues etc) monitors ==> Just ran Dell DPACK this weekend.
ASKER
The problem was caused by backup exec's SDR backup. It was backing up the directory with the search file. The SDR backup does not nee that drive so we unchecked it.
Glad you got that sorted!
I previously had a very similar issue a while back and stumbled across a post which resolved the issue for us. It came down to the Index DB being corrupt so a CatalogOnly reseed just rebuilt a corrupt DB that failed at a later stage once again on a DB move.
I don't recall where I got it from but I've had this as a sticky in my one note:
Give it a go and let me know how you get on....