The Office Communication Server 2007 Planning Guide provides loose guidelines on infrastructure sizing. These are only guidelines and not hard limits, except that an Enterprise Pool will only support up to 125,000 users. Topology Recommendations:
| Topology |
Servers Required |
Maximum Users Supported |
| Standard Edition | 1 – Standard Edition server1 – (Optional) Archiving Server collocated | 5,000 |
| Enterprise pool:Consolidated Configuration | 4 – Enterprise Edition Front-End servers running all server roles1 – Backend(Optional) 1 Archiving Server | 30,000 |
| Enterprise pool:Expanded configurationWith Mid-Range SQL Backend | 4 – Front-End Servers2 – Web Conferencing Servers2 – A/V Conferencing Servers2 – IIS Servers1 – Backend SQL Server(Optional) 1 Archiving Server | 50,000 |
| Enterprise pool:Expanded configurationWith High Performance SQL Backend | 8 – Front-End Servers4 – Web Conferencing Servers4 – A/V Conferencing Servers2 – IIS Servers1 – Backend SQL Server(Optional)2 Archiving Servers | 125,000 |
Edge Server Topology Recommendations:
| Topology | Supported Performance |
|---|---|
| Stand-alone Access Edge Server | 15,000 client connections |
| Stand-alone Web Conferencing Edge Server | 3,000 client connections |
| Stand-alone A/V Edge Server | 1,500 concurrent audio/video sessions |
| Collocated Access Edge & Web Conferencing Edge Server | Access Edge Server: 5,000 client connectionsWeb Conferencing Edge Server: 1,500 client connections |
| Collocated Access Edge, Web Conferencing Edge & A/V Edge Servers (Consolidated Edge Topology) | Access Edge Server: 5,000 client connectionsWeb Conferencing Edge Server: 1,000 client connectionsA/V Edge Server 500 concurrent audio/video sessionsNote A/V experience may be degraded if sessions approach the maximum limit. We recommend that you deploy a separate A/V Edge Server for the optimal A/V experience |