Table 7 Load applied to virtual Enterprise pool based on 25,000 users Category Description users 25,000 ( 20,000 internal, 5,000 external) MPOP 1500 Client distribution 100% of clients running Office Communications Server 2007 R2 32-bit version 5 client computers that each have 5,000 users Remote user distribution 80% of connecting internally 20% of users connecting through an Edge Server Contact distribution 100% of contacts within organization IM sessions 10 users/sec sign-in rate 97% 1:1 IMs 3% IM conferences 2 IM sessions/user/hour 10 instant messages per session 24.5-byte average message size Single Tier Enterprise Pool + Edge Server Topology This fourth topology is similar to the previous topology. In addition to having all servers of an Enterprise pool hosted on a single hypervisor, it also hosts an Access Edge Server virtual machine. Topology This topology includes the following: Hypervisor 1: 1 server virtual machine, 1 SQL Server virtual machine, and 1 Access Edge Server Hypervisor 2: 2 Active Directory domain controller virtual machines. All virtual machines are connected to the same virtual network gigabit adapter of each hypervisor. In addition, the Edge Server virtual machine has a second virtual gigabit adapter connected to another virtual network as in Figure 4. Figure 4 Single Tier Enterprise pool + Edge Server Topology Test Results After OCSStress is run on all clients for 7 days against this topology, the maximum number of users that can be actively connected to a virtualized Enterprise pool with one front-end server, one Edge Server, and one virtualized SQL Server back-end server all running on the same hypervisor is 20,000 users. By comparison with the previous topology, this shows that the maximum Front-End capacity is 20,000 users. Adding a second front-end server adds only 5,000 users to the pool that is used by the Access Edge Server.
Table 7 Load applied to virtual Enterprise pool based on 25,000 users Category Description users 25,000 ( 20,000 internal, 5,000 external) MPOP 1500 Client distribution 100% of clients running Office Communications Server 2007 R2 32-bit version 5 client computers that each have 5,000 users Remote user distribution 80% of connecting internally 20% of users connecting through an Edge Server Contact distribution 100% of contacts within organization IM sessions 10 users/sec sign-in rate 97% 1:1 IMs 3% IM conferences 2 IM sessions/user/hour 10 instant messages per session 24.5-byte average message size Single Tier Enterprise Pool + Edge Server Topology This fourth topology is similar to the previous topology. In addition to having all servers of an Enterprise pool hosted on a single hypervisor, it also hosts an Access Edge Server virtual machine. Topology This topology includes the following: Hypervisor 1: 1 server virtual machine, 1 SQL Server virtual machine, and 1 Access Edge Server Hypervisor 2: 2 Active Directory domain controller virtual machines. All virtual machines are connected to the same virtual network gigabit adapter of each hypervisor. In addition, the Edge Server virtual machine has a second virtual gigabit adapter connected to another virtual network as in Figure 4. Figure 4 Single Tier Enterprise pool + Edge Server Topology Test Results After OCSStress is run on all clients for 7 days against this topology, the maximum number of users that can be actively connected to a virtualized Enterprise pool with one front-end server, one Edge Server, and one virtualized SQL Server back-end server all running on the same hypervisor is 20,000 users. By comparison with the previous topology, this shows that the maximum Front-End capacity is 20,000 users. Adding a second front-end server adds only 5,000 users to the pool that is used by the Access Edge Server.