Parallels’ Virtuozzo Containers 4.0 software doesn’t attempt to emulate the physical machine unlike most hosted virtualization products. Because many of the supporting files and libraries are shared, for example, storage overheads are much lower. This in turn enables Virtuozzo Containers to host a lot more VEs per server than you can virtual machines. Containers can also be deployed quickly with no need to install a new OS every time. Reviewers found creating and managing containers very similar to working with virtual machines except that, because you don’t need to install an OS every time.

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