We are planning our Exchange deployment with 3 large backends, 2 Utility Servers, 4 CAS/OWA Servers and 4 HT's. Any information regarding the SQL 2008 sizing for something like this if we only use Forefront for AV protection of the Exchange message stores and nothing else? We are using a different system for Anti-Spam and endpoint protection is still McAfee on client workstations. I just need expectations for memory and database storage sizes for SQL.
This assumes 10,000 mailboxes @ 500 MB each average.
-Thanks.