I plan to migrate from Exchange 2010 single server with MBX, CAS, HUB with no service pack to Exchange 2013 server, my plan is as below.
2 Exchange 2013 MBX, CAS in the primary site ( DAG )
1 Exchange 2013 MBX, CAS in my DR Site.
Kemp load balancer.
I need to know the below.
2- my current AD is 2 windows 2008 servers and one windows 2003 ( 2003 functional level)
1- Shall I just install exchange 2010 SP3 direct?
shall I upgrade to windows 2008 R2 or 2012?
3- Which kemp model to use to use for 1500 MBX users and Lync 2013 servers
4- how many SSL i need