Microsoft Lync Server 2010 can support large meetings with up to 1000 participants using audio/video (A/V) conferencing, including sharing PowerPoint presentations, revealed Microsoft. "This support requires a dedicated pool configured to support large meetings and managed in a way that ensures hosting of only a single large meeting at a time."
Microsoft published a whitepaper that describes how to support large meetings using a dedicated Lync Server 2010 pool. "It describes scalability considerations and the implementation requirements for a dedicated pool, including topology, hardware, software, and configuration requirements," the paper's descrption reads.
"It also provides a set of best practice recommendations for supporting large meetings, a summary of the test methods and results of server scalability testing conducted by the Lync Server engineering team, and the answers to frequently asked questions about support for large meetings."
Micrsoft UC team said "a testing demonstrated that hardware that meets the Lync Server 2010 hardware recommendations was able to support large meetings with up to 1000 users."
The following table summarizes the CPU and network utilization results of our testing for Front End Servers and A/V Conferencing Servers:
During testing, "we observed that the number of participants in the meeting has an affect on the amount of time it takes for new clients to join a meeting, in addition to the amount of time it takes for existing clients to receive meeting roster updates after a new user joins. The increase in latency is proportional to the number of users in the meeting, as expected. The participant client experience was not optimal with 1000 users, but it was reasonable with all media modalities," explained Microsoft UC.
The following table summarizes the time it takes forspecific meeting activities for Lync clients joining a meeting with 1000 users:
You can download the Whitepaper here.