This post: http://blogs.technet.com/b/exchange/archive/2011/12/14/database-maintenance-in-exchange-2010.aspx
What maintenance tasks need to be performed against the database?
Database Compaction
Database Defragmentation
Database Checksumming
Page Patching
Page Zeroing
Database Compaction
Database Defragmentation
Database Checksumming
Page Patching
Page Zeroing
Why aren’t these tasks simply performed during a scheduled maintenance window?
Won’t these background tasks impact my end users?
How can I monitor the effectiveness of these background maintenance tasks?
My storage vendor has recommended I disable Database Checksumming as a background maintenance task, what should I do?
Thanks as always Ross Smith IV for your great posts!
Jason (Izzy) Sherry's Blog 