Hardware specification for this scenario
Memory and Disk Space
Lotus Quickr server Windows 2003 Enterprise Edition SP2
Lotus Domino 8.0.1
Lotus Quickr 8.1 services for Lotus Domino  
IBM xSeries 346, 3.2 GHz Xeon Processor (4 CPUs)   RAM - 512 MB
Disk space-1.5 GB
Disk swap space-2 times RAM
LDAP server   IBM Lotus Domino 8.0.1
Microsoft Windows 2003 Server Standard Edition
Intel Pentium or higher and compatibles (32-bit and 64-bit chips as appropriate), or equivalents   RAM: 512 MB or more recommended per CPU
Disk space: 1.5 GB minimum disk space per partition recommended
Disk swap space: 2 times installed physical RAM  
Lotus Sametime server   Lotus Sametime 7.5.1
Windows 2003 SP1 or higher  
CPU: Four 2 Ghz or better CPUs(4 cores total) 4 GB
Free space: 2 GB min
Swap: 5 GB  
Reverse proxy server   WebSphere Edge Server 6.0   AMD Opteron, Intel Pentium at 500 MHz or faster, or Intel EM64T (32-bit Operating System support only)   Minimum 990 MB free disk space for installation (includes SDK)
Minimum 512 MB physical memory, 1 GB recommended