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Virtual machine (VM) live migration, which is the ability to move a VM from one physical host to another under hy-pervisor control without suspending for a long time, is a capability being increasingly utilized. With IP mobility, a capability for migrating VMs among distributed sites is provided. We call it the global live migration. However, it affects an(More)
It is often discussed that the fourth methodology for science researches is " informatics " ; the first methodology is theoretic approach, the second one is observation and/or experiment, and the third one is computer simulation. The informatics is expected as a new methodology for data intensive science, which is a new concept based on the fact that most(More)
An architecture for IP layer mobility such as MIPv6 requires modification in the protocol stack of mobile terminals for seamless handoff across different IP networks. MAT (Mobility support Architecture and Technologies) which has been developed by the authors, also requires the similar modification. The modification of the protocol stack of the terminals(More)
A storage system constructed by a wide-area distributed file system of open source software has been requested to ensure the certain existence of the non-falsification data by a trusted third party. We developed an integrity verification application using timestamp mechanism for Gfarm which is a wide-area distributed file system of open source software made(More)
An outline of a planned system for the global space-weather monitoring network of NICT (National Institute of Information and Communications Technology) is given. This system can manage data collection much easier than our current system, by installations of autonomous recovery, periodical state monitoring, and dynamic warning procedures. According to a(More)
Virtualization has been also used as desktop utility and supports VM migration, which is a function to migrate a VM (Virtual Machine) from a physical host to another. However, it cannot migrate hardware configuration of peripherals. We focus on USB devices as peripherals and provide the USB device connection method by combination of MAT and USB/IP for the(More)
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