Migrating Mailboxes from Exch 2003 to Exch 2010 Painfully Slow
Posted on 2011-03-14
We are migrating from Exch 2003 to Exchange 2010. Migrating the mailboxes is really slow.
Moving a 3gig mailbox with 60,000 items is taking about 20 hours. The Exch 2003 side is on physical servers running Win2003 SP2 /Exchange 2003 SP2. The Exchange 2010 is running on VMWare 4.0 with the latest update in place. Server 2008 R2 with Exch 2010 SP1. On the Exch 2008 side we have 3 mailbox servers and 3 CAS/HUB servers. We have 3 ESX hosts each running 1 mailbox and 1 CAS/HUB server. Each ESX box has dual 6 core and 96gig of memory.
We are running a DAG with 3 copies - 2 local and 1 to a DR site. The production net and the replication network both have 2gig cards. Both the Exch 2003 and 2010 servers are on the same VLAN in the same data center (10 feet away from each other).
I am hearing that this is normal but finding thathard to swallow. I have users with 30gig mailboxes,,, that could take a week to migrate. Try telling attornies that...