Office Communications Server 2007 R2 requires 64-bit server
software and hardware. In addition, requirements for CPU cores and
RAM are different from the minimum requirements for Office
Communications Server 2007. For details, see
The following are the operating system and server software requirements for Office Communications Server 2007 R2:
- Windows Server 2008 Standard or Enterprise
- Windows Server 2003 R2 Standard x64 Edition or Enterprise x64
Edition with Service Pack 2
- Windows Server 2003 Standard or Enterprise x64 Edition with
Service Pack 2
- Back-end database support is provided by either Microsoft SQL
Server 2008 or Microsoft SQL Server 2005 with SP2.
- To provide voice mail storage functionality with Enterprise
Voice, Microsoft Office Communications Server 2007 R2 requires
Microsoft Exchange 2007 SP1 Unified Messaging. For details about
the Exchange 2007 requirements for Office Communications Server
2007 R2, see
Server Role Collocation
Office Communications Server 2007 R2 supports placing
more than one server role on each server. Understanding which
components can be collocated will help you plan your hardware
needs. For details, see
Load Balancers
Office Communications Server 2007 R2 and Office Communications Server 2007 cannot coexist in a single pool or Edge Server array. You can, however, connect an Office Communications Server 2007 pool and an Office Communications Server 2007 R2 pool to the same load balancer. For example, if you have an array of Office Communications Server 2007 Directors attached to a load balancer, you can also simultaneously attach an Office Communications Server 2007 R2 Director array to the same load balancer.
The use of a software load balancer, such as Windows Server Network Load Balancing, is not supported.