Object Store Based SAN File Systems

SAN file systems today allow clients direct access to block devices for data storage and retrieval without going through a server. This however poses new challenges to file system designers such as security, scalability and management. The newly developed Object Stores (ObS) [5] [6] [9] enable applications to create and delete objects and to write and read byte ranges to/from objects. ObS provide space management abstraction, late binding, security, safe writes and other capabilities. Building a SAN file system using ObS as storage devices alleviates the challenges mentioned above. In this article we briefly detail these challenges and describe how ObS help in solving them. We then describe zFS, a scalable distributed file system which uses ObS.

By: J. Satran, A. Teperman

Published in: H-0214 in 2003


This Research Report is available. This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g., payment of royalties). I have read and understand this notice and am a member of the scientific community outside or inside of IBM seeking a single copy only.


Questions about this service can be mailed to reports@us.ibm.com .