Jelastic uses Parallels Virtuozzo Containers for supporting the largest amount of applications on a single physical server. This is achieved by using operating system-level virtualization. Container-based virtualization helps to slice hardware nodes on smaller containers and get very high density. The containers located on the Hardware Nodes are independent Linux machines on CentOS (other versions of Linux are also supported).
Container-based virtualization guarantees the highest application density and maximum utilization of server resources. Since each container is fully isolated, they are highly secure and provide maximum uptime. This isolation prevents the neighboring containers from “behaving badly”, for example stealing resources from another. Each environment with provisioned containers gets complete privacy and becomes unavailable for all other users.