I'm planning to deploy Exchange 2010 in organization. This organization consists of 2 sites.
The plan for 1st location (holding most of the employees) is: - 2 x Windows Server 2008 R2 Enterprise - Forefront TMG Servers working in NLB - 1 x Windows Server 2008 R2 Standard with CAS ROLE (and EDGE?) behind TMG - 1 x Windows Server 2008 R2 Enterprise with MAILBOX AND HUB in DAG
The plan for 2nd location is (holding just couple of employees, eventually some external hosting): - 1 router (if necessary TMG server if not just simple hw box) - 1 x Windows Server 2008 R2 Standard with CAS ROLE (and EDGE?) behind TMG - 1 x Windows Server 2008 R2 Enterprise with MAILBOX AND HUB in DAG.
Those 2 locations will be connected thru IPSEC permanently.
- Considering that I will have TMG servers do i need to put EDGE servers outside? or I can keep them with CAS role.
- Will DAG work thru IPSEC tunnel efficiently ?
- Is this even good plan ? What would be the best plan considering we have 3-4 locations people need perm access thru IPSEC tunnel to access mail and we need HA solution. We're putting mail servers in 2 locations since we want to be sure one or the other works and accept emails, serves them in case of power failure or network failure in one of the locations.