19/10/2012

Persistent Chat Server

Lync Server 2013 Preview, Persistent Chat Server communications software is part of the Lync Server 2013 Preview infrastructure.
Deploying Lync Server 2013 Preview, Persistent Chat Server requires that you:
  • Use Topology Builder to define, or import, and subsequently publish your topology and the components that you want to deploy.
  • Prepare your environment for deploying Persistent Chat Server components.
  • Install and configure Persistent Chat Server components for your deployment.
Depending on your topology, you can install Persistent Chat Server on a single computer or multiple computers.
A Persistent Chat Server pool can exist with a Lync Server 2013 Preview Enterprise Edition Front End pool. However, you cannot collocate Persistent Chat Server for Enterprise Edition with any other server. For more information about Persistent Chat Server collocation restrictions, see Set Up System Platforms in the Deployment documentation, and Supported Lync Server 2013 Preview Topologies in the Supportability documentation.
In addition, you cannot add the Microsoft SQL Server database that is used by the Persistent Chat Server pool to SQL Server Express (which is the setup used by Lync Server 2013 Preview Standard Edition). We recommend that you install the SQL Server database for Persistent Chat Server on a dedicated computer, although collocating Lync Server 2013 Preview SQL Server and Persistent Chat Server SQL Server on the same computer is supported on the same SQL Server instance.
A Persistent Chat Server pool can be collocated on the Lync Server 2013 Preview Standard Edition server by using SQL Server Express. We do not support high availability for Persistent Chat Server with Standard Edition server, and performance and scale will be limited. We also do not support an upgrade of Lync Server 2010, Group Chat Standard Edition server to Lync Server 2013 Preview Persistent Chat Server Standard Edition server. We support only new Lync Server 2013 Preview Persistent Chat Server Standard Edition server deployments.
For details about available topologies and the technical and software requirements for installing Persistent Chat Server, see Planning for Persistent Chat Server in the Planning documentation.
For details about acquiring certificates, creating the SQL Server database, and creating file stores, see Deploying Lync Server 2013 Preview in the Deployment documentation.
If your organization requires compliance support, you can opt to have it installed by using Topology Builder. The Persistent Chat Server Compliance service is installed on the same computer as the Persistent Chat Server Front End Server. A separate database is required for compliance. For details about compliance requirements for Persistent Chat Server, see Planning for Persistent Chat Server in the Planning documentation.
Persistent Chat Server can support up to 150,000 provisioned users. The number of chat rooms supported is 33,077, comprised of 32,000 small chat rooms, 1067 medium chat rooms, and 10 large chat rooms. Each large chat room can accommodate up to 16,000 users.
Persistent Chat Server is also supported on a virtual server. The virtual server can support up to 20,000 users if it matches the specifications of the physical server. We recommend four-core processors and 8 GB of memory.
At a minimum, each topology requires a server with Lync Server 2013 Preview installed and a server with SQL Server database software installed.
Topology Builder supports multiple Persistent Chat Server pools. Follow the same deployment instructions for deploying multiple Persistent Chat Server pools as you would for any pool from the Deploying Lync Server 2013 Preview in the Deployment documentation.