How many Partition a physical server into VPSs?
The number of virtual private servers that share a physical host varies from 5 to 20 depending on the type of vps. Using 'fair share' technology, VPS providers sets RAM, CPU and bandwidth minimums for each vps so each vps is not competing unchecked for the same physical resources. Thus, the overall performance of your vps is not a simple function of how many virtual private servers are on the same physical host or even the computing power of that host.
In Virtuozzo VPS you can Partition a physical server into 100s of VPSs, each with full dedicated server functionality and can have Mass Management - Manage 1000s of VPSs as easily as a single server and 100s of physical servers in unified way.