I am designing the mailbox storage for a Exchange 2010 setup.
The requirements for my organisation is to have 3 tiers of user - Tier 1 being low usage workers (100), Tier 2 with average users (300) and Tier 3 are heavy users (200) with high I/O plus blackberry service.
The Exchange Storage Calculator recommended 3 Databases and 200 users per database.
How should I allocate users to the 3 database?
I think I would get better performance if I spread all tiers of users across the 3 database.
However, it would be easier to manage users if I place each tier within its own database but that would mean that the database with Tier 1 users will be underutilized?
Any comments are welcomed!