Abstract
Today���s scientific applications demand computational resources that can be provided only by parallel clusters of computers. Storage
subsystems have responded to the increased demand for high-throughput disk access by moving to network attached storage. Emerging Cyberinfrastructure
strategies are leading to geographically distributed computing resources such as the National Science Foundation���s TeraGrid. One
feature of the TeraGrid is a dedicated national network with WAN bandwidth on the same scale as machine room bandwidth. A natural next step
for storage is to export file systems across wide area networks to be available on diverse resources. In this paper we detail our testing with the
Lustre file system across the TeraGrid network. On a single 10 Gbps WAN link we achieved single host performance approaching 700 MB/s for
single file writes and 1GB/s for two simultaneous file writes with minimal tuning.