1. A method for transferring guest physical memory from a source host to a destination host during live migration of a virtual machine (VM) to which the guest physical memory is associated, the source host being a physical computer hosting the VM prior to the live migration and the destination host being a physical computer hosting the VM after the live migration completes, the method comprising: creating a file on a shared datastore, the file on the shared datastore being accessible to both the source host and the destination host; transmitting pages of the guest physical memory from the source host to the destination host over a network connection that places the source host and destination in communication with each other; and writing pages of the guest physical memory to the file so that the destination host can retrieve the written guest physical pages from the file.