All Office Communications Server 2007 R2 servers must meet certain minimum operating system and hardware requirements. The topics in this section describe what is required and what is supported.

Important:
Office Communications Server 2007 R2 is available only in a 64-bit edition, which requires 64-bit hardware and a 64-bit edition of Windows Server. A 32-bit edition is not available with this release. The exception is Office Communications Server Administrative Tools, which is available both in a 64-bit and a 32-bit edition.

For details about software and hardware requirements for Office Communicator 2007 R2, see Office Communicator 2007 R2in the Client Planning and Deployment documentation.

Note:
If you choose to deploy Office Communications Server 2007 R2 by using the command line, some additional prerequisites need to be installed manually. For details, see the Office Communications Server 2007 R2 technical reference content.

The following topics describe the software and hardware requirements for Office Communications Server 2007 R2 components: