Topic Last Modified: 2011-02-01

Microsoft Lync Server 2010 Standard Edition servers are intended for smaller organizations and remote locations from the main organization deployment. A Standard Edition server is designed for a user count of approximately 5000 homed users. The main difference between Microsoft Lync Server 2010, Enterprise Edition and Microsoft Lync Server 2010, Standard Edition is Standard Edition does not support the high availability features of Enterprise Edition. Specifically, you cannot pool Standard Edition servers like you can Front End Servers in Enterprise Edition. Also, the SQL Server database that Standard Edition uses is a collocated SQL Server Express version of SQL Server that is right sized for the workloads of a Standard Edition server. This is not to say that all roles must reside on a Standard Edition server. You can have stand-alone Mediation Servers, Edge Servers, Archiving Servers, and Monitoring Servers. The SQL Server database for the Central Management store and for the purposes of Lync Server 2010 must reside on the Standard Edition collocated SQL Server-based server. The A/V Conferencing Server must also remain collocated with the Standard Edition server. The Monitoring Server and Archiving Server use a stand-alone server with the SQL Server database.

Operating System Installation

Lync Server 2010 is available only in a 64-bit edition, which requires 64-bit hardware and a 64-bit edition of the Windows Server operating system. A 32-bit edition of Lync Server 2010 is not available with this release.

Standard Edition server can use one of the following:

  • Windows Server 2008 x64 SP2

  • Windows Server 2008 R2

Install the operating system software on the Standard Edition server. Apply all updates in order to bring the operating system up to the latest update and required update level consistent with your organization’s standards. Lync Server requires Microsoft .NET Framework 3.5 with SP1. You should also apply the update discussed in Microsoft Knowledge Base article 981575, “A memory leak occurs in a .NET Framework 2.0-based application that uses the AesCryptoServiceProvider class,” at

Additional Software for Lync Server 2010

In addition to the updates required for the operating system, Lync Server 2010 requires operating system roles, features, and software to operate. For details about the additional software that must be installed prior to publishing your topology and installing Lync Server 2010, see Additional Software Requirements in the Planning documentation.