Hi, I need to deploy a Exchange Server 2007 for 5000 mailbox. Im planning to use CAS, EDGE, HUB and Mailbox roles all in different hardware.I need to know how many servers of each role do I need and how much memory and disk space is required for that amount of mailboxes on those servers. Also I plan to use CCR for high availability.The users will mostly connect ussing OWA and POP3 over internet.Thnaks to all.

Hi JorgeLazaro Please check this link:Exchange 2007 Mailbox Server Role Storage Requirements Calculator http://msexchangeteam.com/archive/2007/01/15/432207.aspxThanks

If you want HA/DR solution for each roles then you need to have minimum 6 Servers, 2 CCR + 2 CAS&Hub NLB + 2 Edge Servers... You can get storage size guidance from below link and sub-links available in the same. Storage Calculator, mentioned by Sharad, also helps you to calculate storage size based on mailbox quota of your mailbox server role. Planning Storage Configurations http://technet.microsoft.com/en-us/library/bb124518.aspx Memory configuration guidance and recommendation you can follow below article because it depends on number of Processor core your server has... Planning Memory Configurations http://technet.microsoft.com/en-us/library/bb738124.aspxAmit Tank | MVP - Exchange | MCITP:EMA MCSA:M | http://ExchangeShare.WordPress.com

Thanks to all...