Parallels Server 5 Bare Metal Beta is a cloud-ready virtualization solution that allows you to simultaneously run multiple Parallels virtual machines and containers on the same physical server, thereby making more efficient use of your hardware resources. The 5.0 release:
Optimizes system performance with features like no-downtime migration
Adds CPU and memory hot-plug support, enabling you to build scalable infrastructure-as- a-service solutions
Supports IO and CPU limits and accounting, so you can ensure good performance for all tenants in a multi-tenant environment
Please note, the Parallels Server 5 Bare Metal Beta is not supported by Parallels Support team till the official product release.