Vote for Cassatt Active Response
Cassatt Active Response automates the management and failover of both physical and virtualized applications, regardless of technology, ensuring the full value of virtualization without the management overhead. Should a virtual server crash, Cassatt Active Response can restart that server instantly, or automatically select an alternative physical server with spare capacity.
If a physical server crashes, Cassatt Active Response will automatically: Quarantine the failed physical server; Identify a new physical server from a free pool of shared servers - or from a lower priority application; Create appropriate new virtual servers (i.e. either VMware or XenSource) to replace the failed virtual servers; Provision hardware with a new virtual server container image, which can be accomplished on bare metal in as little as 5 minutes; Deploy virtual servers, bringing them back online.