Planning to virtualize Exchange Server 2007 running on Windows Server 2008 (HP OEM license) with VMware vCenter Converter Standalone (5.1) to new Dell servers. Obviously running Windows Server 2008 (HP OEM) won't work on Dell servers so I haven't tried to convert this server yet. I'm guessing one option would be to create a new virtual Exchange Server and migrate mailboxes and replicate public folders from old to new. There would be a large amount of data to migrate (mailbox databse is 150 Gb and PF database is 400 Gb) probably requiring lots of days (weeks?) of mailbox moving and folder replication to get everything moved over plus the move to a new server wouldn't be transparent to the end users. I'm thinking there must be a better way and would appreciate any advice that would the conversion to a virtual Exchange Server faster and easier.