Important:
Office Communications Server 2007 R2 requires 64-bit hardware. The 32-bit hardware used for prior versions of this product cannot be reused for Office Communications Server 2007 R2.

Hardware requirements vary according to server role, topology (Standard Edition, Enterprise Edition in a consolidated configuration, or Enterprise Edition in an expanded configuration), and storage requirements, and are determined by the specific deployment scenario.

Monitoring Servers, Archiving Servers, and Group Chat Servers that do not host their associated databases have the same hardware requirements as a Front End Server. Monitoring Servers, Archiving Servers, and Group Chat Servers that do host their associated databases have the same hardware requirements as the database. For details, see Hardware Requirements for Enterprise Edition Consolidated Configuration with 100,000 Endpointsor Hardware Requirements for Enterprise Edition Consolidated Configuration with 200,000 Endpoints.