AVTware and Live Host Migration
A Virtual Machine such as VMware or KVM allows you to migrate an installation with active virtual Alpha(s) and/or VAX(es) from one host system to another. This enhances the resiliency of your virtual Alpha/VAX environment to levels beyond those of the original systems. It will likely also work with Xen, although we are currently unaware of any live testing of this environment.
This video shows how a virtual Alpha with full CPU load is seamlessly migrated from one host (Intel Xeon based system, IP-address 192.168.5.121) to another (Intel i7 based system, IP-address 192.168.5.123).