I am knee deep in an Exchange migration currently of about 850 users from an Exchange 2007 environment to an Exchange 2010 environment. The mailbox databases are connected to a SAN via fiber and from the testing I've done so far I figure I can get about 24GB of mailboxes moved a night.
I have about a million questions with regard to this migration but right now but I think the most important is the following:
Is there a standard best practice for moving mailboxes?
- Should I spread users out across all the mailbox databases?
- Should I fill them up to say 70GB one at a time?
- Move a chunk of users to a mailbox every night?
- What’s the best way to keep track of how full databases are, where users are, etc.
- Is there a good way to spread users out automatically or should I just do it by best judgment?
Obviously I’ve never done a move like this so I guess I’m just wondering how I should approach this. Thanks.
I just realized that I should post my database structure, I think it may help show what I'm doing. Here are some pieces I forgot to mention:
- I have a DAG set up for 3 Exchange mailbox servers. Two on-site and one off-site
- I have 28 databases cut up across the 2 on-site mailboxes (14 and 14) with the third as a fail over.
- Currently about 2 TB of mail to migrate so we have a little bit of breathing room on these servers