  For data analysis of large-scale experiments such as LHC Atlas and other
Japanese high energy and nuclear physics projects, we have constructed a Grid
test bed at ICEPP and KEK. These institutes are connected to national
scientific gigabit network backbone called SuperSINET. In our test bed, we have
installed NorduGrid middleware based on Globus, and connected 120TB HPSS at KEK
as a large scale data store. Atlas simulation data at ICEPP has been
transferred and accessed using SuperSINET. We have tested various performances
and characteristics of HPSS through this high speed WAN. The measurement
includes comparison between computing and storage resources are tightly coupled
with low latency LAN and long distant WAN.
