Migrating Virtual Machines and Containers

The Virtuozzo physical server is the system with higher availability requirements in comparison with a typical system. If you are running your company mail server, file server, and web server in different virtual machines and Containers on one and the same physical server, then shutting it down for hardware upgrade will make all these services unavailable at once. To facilitate hardware upgrades and load balancing between several hosts, the Virtuozzo software provides you with the ability to migrate virtual machines and Containers from one physical server to another.

Virtuozzo is shipped with a special utility—pmigrate—allowing you to perform different types of migration. Using this utility, you can migrate

• Containers from one physical server to another
• Virtuozzo virtual machines from one physical server to another
• a Container to a Virtuozzo virtual machine
• a Virtuozzo virtual machine to a Container
• a physical server to a virtual machine or Container
• Xen virtual machines to Virtuozzo virtual machines

All these operations are described in the following subsections.