There are many resources available on the net I am going to post some of them here and hoping to clear our some of the questions.....
- Microsoft Exchange Server 2010: Sizing and Performance - Get It Right the First Time
- HP Sizer for Microsoft Exchange Server 2010
- Deployment assistance
- Upgrade Process from Exchange 2007 to Exchange 2010
- msexchangeteam Blog
- Getting Started With Exchange 2010
- Exchange Pre-Deployment Analyzer
Microsoft Exchange Solution Reviewed Program (ESRP)
- This is great to dig to see what Vendors have done to test E210 on their hardware.
Oz Casey, Dedeal
MCITP (EMA), MCITP (SA)
MCSE 2003, M+, S+, MCDST
Security+, Project +, Server +