vMotion allows administrators to perform live migration of running virtual machines from one host to another without service interruption. The hosts should be connected to the same SAN.

vMotion makes it possible to do the following tasks:

Perform zero-downtime maintenance by moving virtual machines around so that the underlying hardware and storage can be serviced without disrupting user sessions.

Continuously balance workloads across the datacenter to most effectively use resources in response to changing business demands.