Definition
The T10 Technical Committee [1] is working on a specification for Object-based Storage Devices (OSDs) that turns files, directories and storage-related elements into objects and handles storage management issues using an extended SCSI-3 command set.
A storage object is a virtual entity that groups data that has been determined by the user to be logically related. Space for a storage object is allocated internally by the OSD itself. Three key issues and challenges for designing the OSD are identified as follows: (1) OSD File System (OSDFS), (2) security, and (3) intelligence.
In LOMSS, there is little locality of reference within a single OSD, due to the fact that a multimedia file generally comprises many objects and these objects are distributed across many OSDs. Hence, the object management presented in the OSDs of Large-Scale Object-Based Multimedia Storage Systems (LOMSS) is radically different from that of general-purpose host-based file systems, such as XFS, JFS,...
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References
T10 Technical Editor. Information Technology-SCSI Object-Based Storage Device Commands. T10/1355-D, Revision 10, July 2004.
F. Wang, S.A. Brandt, E.L. Miller, and D.D.E. Long, “OBFS: A File System for Object-Based Storage Devices,” Proceedings of the 21st IEEE/12th NASA Goddard Conference on Mass Storage Systems and Technologies (MSST2004), pp. 101–118, 2004.
S.A. Weil, “Leveraging Intra-object Locality with Ebofs,” UCSC CMPS-290S Project Report, University of California, Santa Cruz, May 2004.
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© 2008 Springer-Verlag
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(2008). Design of Object-Based Storage Devices. In: Furht, B. (eds) Encyclopedia of Multimedia. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-78414-4_15
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DOI: https://doi.org/10.1007/978-0-387-78414-4_15
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