A Sharable Storage Service for Distributed Computing Systems in Combination of Remote and Local Storage

摘要

Traditional Grid data management systems have been developed on the supposition that the network bandwidth is unconstrained with dedicated broadband network lines and the storage space is enough for storing replicas. This paper proposes a storage service for distributed computing systems without the supposition, by adopting the concept of pervasive storage in the distributed computing. The Sharable Storage space is recognized as the application server's local storage. Whenever the user commits, data transfer is automatically performed using iSCSI protocol. The storage service is destined for numerous data transfer of relatively small files, and simulated under the condition of a restrictive network bandwidth. File preloading function could make the applications start early without dedicated broadband network lines. The computing sites could benefit from the proposed storage service than waiting until the whole file is transferred for replication and keeping the replica stored without the users' explicit note for reuse.