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Corrupt Exchange Search catalog

Hello

Users in our Exchange 2007 environment reported that Outlook search, when in online mode, doesn't work properly. I ran the Test-ExchangeSearch command which reported that a bunch of DB's on our server had corrupt search indexes. I understand we need to run the ResetSearchIndex script to fix this.....we have about 5 DB's on the server which need this run against them, is there any issue with

i. Doing these at the same time (i.e. running the command for each DB one after the other)
ii. Running these during business hours
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Joe_Budden
Asked:
Joe_Budden
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2 Solutions
 
Larry LarmeuManaging DirectorCommented:
You can run them at the same time and run them during business hours, but it's going to affect performance.  I'd recommend doing them one at a time after hours.  It's really up to you, though.
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Joe_BuddenAuthor Commented:
Hi

Affect performance in what way?
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Larry LarmeuManaging DirectorCommented:
It's going to re-create the index so it's going to use some CPU, memory and hard disk IO.
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MegaNuk3Commented:
Also it may take a while for exchange to reindex the databases, during which time online (non cached) outlook & OWA users will get incomplete or no search results.
You are looking at a 10-20% CPU hit, but that is what I saw running it during the day on a 12 DB CCR cluster...
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Joe_BuddenAuthor Commented:
Thanks.

These servers are actually part of a CCR cluster with an SCR target in another AD site. Does anyone know how this corruption is affected for passive copies of the database?
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MegaNuk3Commented:
Each copy maintains it's own index (search catalog) this is not replicated between servers
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