Efficient Memory Transport for ISR Systems Joseph C Laws In this paper we discuss the issue of dynamic restoration of a Xen domain memory image as it pertains to mobile computing environments. Current systems suffer from a resume latency that can make moving to a new environment with a slow connection impractical. A technology called Internet Suspend/Resume (ISR) developed at Carnegie Mellon University in conjunction with Intel research addresses some of the latency issues, primarily those related to the transportation of the hard drive. This paper focuses on solving the problem related to the transport of the memory image portion of a virtual system. To accomplish this a method of dynamic loading parts of the memory image as they are needed is introduced. We show that it is not only feasible, but the latency introduced from paging in the needed data is negligible compared to the delay of sending it over the network.