Enterprise Edition Example
,The other topology Microsoft tested is an expanded Enterprise Edition deployment designed for very large organizations. This topology is scaled to support 40,000 users and used seven different virtual hosts. The logical layout of the Enterprise Edition topology is displayed in Figure 25.5.
Figure 25.5 Enterprise Edition Virtual Topology
Front-End Hosts and VMs
Two hosts were dedicated to run eight Enterprise Edition Front-End Servers with a machine running Windows Server 2008 R2 and the following hardware configuration:
• 2.26 GHz or higher CPU with 16 processor cores
• 64 GB RAM
• 500 GB SAS disk (RAID 0)
• Four or more network adapters
Each virtual machine running the Enterprise Edition Front-End Server role used the following configuration:
• Four virtual CPUs
• 15 GB RAM
• One network adapter
A/V Conferencing Host and VM
The third virtual host server ran four different A/V Conferencing Server virtual machines. This offloaded A/V conferencing from the Front-End Servers to provide greater scalability. As with a physical deployment, for every 10,000 users, a dedicated A/V Conferencing Server should be deployed. The host had the following hardware configuration:
• 2.26 GHz or higher CPU with 16 processor cores
• 64 GB RAM
• 500 GB SAS disk (RAID 0)
• Four or more network adapters
Each A/V conferencing server virtual machine used the following configuration:
• Four virtual CPUs
• 15 GB RAM
• One network adapter
Back-End Host and VMs
The fourth host server was dedicated to the Back-End SQL Server and Back-End File Server. It had the following hardware configuration:
• 2.26 GHz or higher CPU with 8 processor cores
• 32 GB RAM
• 500 GB SAS disk (RAID 1+0)
• Two or more network adapters
Each virtual machine running the Back-End SQL Server or File Server role used the following configuration:
• Four virtual CPUs
• 15 GB RAM
• One network adapter
Monitoring and Archiving Host and VM
The fifth host server was dedicated to running a single virtual machine providing the Monitoring and Archiving roles with a collocated SQL Server database. The host had the following hardware configuration:
• 2.26 GHz or higher CPU with four processor cores
• 16 GB RAM
• 500 GB SAS disk (RAID 1+0)
• Two or more network adapters
The single virtual machine running the Monitoring and Archiving roles with a collocated SQL instance used the following configuration:
• Four virtual CPUs
• 15 GB RAM
• One network adapter
Director Host and VMs
The sixth virtual host server was dedicated to running two virtual machines with the Director role installed. The host had the following hardware configuration:
• 2.26 GHz or higher CPU with eight processor cores
• 32 GB RAM
• 500 GB SAS disk (RAID 0)
• Two or more network adapters
Each virtual machine serving as a Director used the following configuration:
• Four virtual CPUs
• 15 GB RAM
• One network adapter
Edge Server Host and VMs
The final virtual host server was dedicated to running two virtualized Lync Edge Servers. These were intentionally placed on a separate host for security reasons because the Edge Servers communicate with external hosts. The host had the following hardware configuration:
• 2.26 GHz or higher CPU with eight processor cores
• 32 GB RAM
• 500 GB SAS disk (RAID 0)
• More than four network adapters
Each virtual machine serving as a Director used the following configuration:
• Four virtual CPUs
• 15 GB RAM
• Two network adapters