I'm designing Exchange 2010 for an organization with the following spec:
Users : 4000
Mailbox size : 1 GB
No. of Servers : 3
DAG : 1
Msg sent/receive : 100
All users are concurrent users and in a single site.
I have calculated and got the following values:
Recommended Number of Database+Log LUNs / Server = 12
In this 4 databases are active and remaining 8 are passive.
Database cache per user = 6 MB
Memory (RAM) required for one server = 4000 * 6 MB = 24000 MB
Therefore memory required for one server = 32 GB
My question is
1. For memory calculation do we need to include all the users who are in passive database also?
2. What will be the effect when I implement the same scenario with 2 DAG with 3 servers each?