Have a look at the planning guide (Hardware Requirements for Office Communications Server 2007 R2)
http://www.microsoft.com/downloads/details.aspx?familyid=E9F86F96-AA09-4DCA-9088-F64B4F01C703&displaylang=enThis Backen DB supports up to 100.000 users
Table 2. Enterprise Edition, Back-End Database
Hardware component
|
Minimum requirement
|
CPU
|
· Dual processor, quad-core 2.0 GHz+
· 4-way processor, dual-core 2.0 GHz+
|
Memory
|
8 GB
|
Disk
|
· 2x RAID 1 (mirrored), 10K RPM or 15K RPM for system files
· 2x RAID 1 (mirrored) 15K RPM for database log files
· 8x RAID 10 (striped and mirrored) 15K RPM disks for database data files
|
Network
|
2-port 1 Gbps network adapter (recommended)
|
- Belgian Unified Communications Community : http://www.pro-exchange.be -