A JDO storage cluster based on object devices

Abstract

Today's Internet services demand the storage platform to possess high performance and simple programming interfaces. This paper presents the design and implementation of a distributed objects storage cluster system, which employs Network-Attached Object Storage Device as the low-level storage device to support structured-data directly to eliminate the problem of conventional storage systems. This system provides a unified, transparent and object-oriented view of the storage devices of the whole cluster and greatly simplifies distributed service development. Based on this system, an open source mail server is enhanced to be a distributed one while only a few source files are modified. Testing shows that the performance of this enhanced mail system can achieve 2/3 of the ideal upper limit, which is evidently higher than the original one based on file systems. © Springer-Verlag 2004.