Server parameters for Middleware Local:
for 100 users - CPU 2 streams, RAM 4Gb, HDD 500Gb, LAN 1Gbps
for 1 000 users - CPU 4 streams, RAM 8Gb, HDD 500Gb, LAN 1Gbps
for 5 000 users - CPU 8 streams, RAM 16Gb, SSD 240Gb, LAN 1Gbps
for 10 000 users - CPU 16 streams, RAM 32Gb, SSD 240Gb, LAN 1Gbps
Installed OS Linux Debian x64 (latest stable build) and provide access via SSH as root, to install software.