4000 mailboxes, 50 messages sent/received per day per user, multiple sites, Exchange Servers consolidated in just one datacenter.
Two Servers with CAS and HUB on them. Hardware Load Balancer controlling traffic between these servers. Two MBX Servers with DAG.
Hardware: 16gb RAM, 2x Quad core Xeon 3.6GHz for each server
Question: Is Okay to put on the same server both CAS and HUB Role?