I have exchange 2010 installed with all the roles in single box with no SP. Im planning for Exchange 2013 with HA as below.
Two Exchange MBX and CAS with Kemp load balancer.
Disaster Recovery Site:
Single Exchange 2013 with MBX and CAS.
so I need to install the SP 3. can I install it directly without installing any other updates or CU, or SP??
also my active directory has three active directories ( windows 2003 and two windows 2008 32 bits) so my AD is not prepared for R2. can I just install the SP3 direct and that should be fine.