Specifications

38 Reference Architecture | Dell
TM
Unified Communication Solution with Microsoft® Lync® Server 2013 for Single Site
Implementation | Version 1.0
5 Verification
Verification of the topology involved a number of different scenarios in the lab. These included
performance validation of Lync Server, quality of experience (QoE) results from monitoring server reports,
validation of the Sonus SBC 1000 gateway and SBC configuration and performance, failover validation of
the Lync Front End, and verification with Lync and Polycom clients.
The performance verification involved measurements from performance monitor after the
Lync Stress and
Performance Tool was run. There were a number of different counters that were looked at, including CPU,
memory, disk I/O, conferencing statistics and connected users. In line with Microsoft recommendations,
CPU performance was taken from the hosts, since these counters are a more reliable indicator than CPU
performance counters taken directly from the VM. QoE, which is particularly important for real-time
traffic, such as audio and video in Lync, was also measured using the Lync Monitoring Server. These results
indicate that the suggested reference architecture is adequate for 1,000 Lync users.
Figure 18 Lync Server 2013 Load Configuration Tool
Figure 18 shows the general scenario load settings of the Lync Server 2013 Load Configuration, which is
part of the Lync Stress and Performance Tool. This utility is used to set the Lync feature scenario and the
load parameters to be stressed against the Lync infrastructure. As seen from the screen shot, the load level
across the different feature scenarios was set to high. The multi-view video conference was also set to