Prerequisites

The infrastructure requirements for a Persistent Chat pool are very similar to the requirements for a Front End pool. For example, the Active Directory requirements are identical with one small exception: At least one AD global catalog server must exist in the forest root domain for Persistent Chat to be installed in that forest. Also similar to the Front End pool, a file store must be defined for use with Persistent Chat, which serves as a repository for files that are uploaded using the chat rooms. With a single-server deployment, the file store can be defined as a local file path on the Persistent Chat Server. For multiple server deployments, a UNC path location must be specified. If desired, the same UNC path location can be used as a file store for both the Front End pool and the Persistent Chat pool.

The system requirements for a Persistent Chat Server are summarized here:

• Windows Server 2008 R2 with SP1 and Windows Server 2012 are supported operating system platforms (Standard, Enterprise, or Datacenter Editions).

• .NET Framework 4.5 (included with Windows Server 2012).

• Windows PowerShell 3.0 (included with Windows Server 2012).

• Windows Identity Foundation (included with Windows Server 2012).

• The Message Queuing feature (including Directory Service Integration) included with Windows Server is required if the Persistent Chat Compliance service is enabled.

• Microsoft Visual C++ 11 x64 redistributable (automatically installed from the Lync media if not present when starting the Lync installation).

• One standard SSL certificate is required, from either a third party or an internal certificate authority (no subject alternative names are required).

Hardware guidelines for a Persistent Chat Server are the same as for other Lync Server roles and are summarized here:

• Quad-core 64-bit dual processor (2.0GHz or higher), or dual-core four-way processor (2.0GHz or higher)

• 16GB RAM

• Two 10,000 RPM hard disk drives with at least 72GB of free space, or RAID 1 or RAID 10 volume on a storage area network

• One network adapter, 1Gbps or higher (NIC teaming with a single MAC and single IP address are supported)

For the Persistent Chat database server, SQL Server 2008 R2 and SQL Server 2012 are the only supported database platforms. The hardware guidelines for a Persistent Chat database server are the same as for other Lync database servers, and are summarized here:

• Quad-core 64-bit dual processor (2.0GHz or higher) or dual-core four-way processor (2.0GHz or higher)

• 32GB RAM

• Eight or more 10,000 RPM hard disk drives with at least 72GB of free space, or RAID 1 or RAID 10 storage area network with four dedicated LUNs

• One network adapter, 1Gbps or higher (NIC teaming with a single MAC and single IP address are supported)