F5 Announced today that they were providing with their BIG-IP can VMotion from one site to another without downtime.
First the VM is sVmotioned from one storage to another, and then Vmotioned, F5 BIG-IP will redirect the to the remote site, including live sessions that are currently in progress.
Taken from the Demo on their Site
In this webcast we will demonstrate how to perform a secure live migration of a VM from one cloud to another, without downtime, and without user disruption using LTM, GTM and vCenter APIs. Until now, it has been difficult if not impossible to accomplish this. VMotion is today limited to a single L2 broadcast domain, and Storage VMotions are even more restrictive. IP address space limitations make management cumbersome at best.
F5 will be demonstrating this capability on Wednesday, September 2 at 10:30 a.m. and 5:15 p.m. at the VMware vCloud Pavilion at VMworld 2009. Come visit F5 Networks at Booth #2302
Demo You can download the webcast video here