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Proceedings Paper

The file system research based on the volume holographic data storage
Author(s): Faling Yi; Changsheng Xie; Fei Wu; Dezhi Han
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Paper Abstract

The Volume Holographic Data Storage (VHDS) is an optical technology that allows one million bits of data to be written and read out in single flashes of light. To accommodate the characteristics of VHDS, this paper presents the following strategies in designing the file system based on VHDS: (1) Construct the virtual storage layer on the Holographic Storage media, which turns the storage-on-pages into the storage-on-blocks. (2) Use the two-layer structure of the directory table and the index node, and the data stored in the immediate area of the index node. This method can access the index node and the content (partial or all) of the file with an accessing operation. (3) Adopt the allocating method of the page priority in storing data--allocate the whole page to a file while the length of the file exceeds the page. In the meantime, a page is partitioned into many zones to enhance the storing utilities of VHDS. (4) To meet the three-dimension storage's need, the two-dimension Logical Block Address (LBA) is to be used, and makes the more continuity between data blocks--allocate the continuous data blocks in vertical and horizontal direction while storing data. The simulation test shows that the file system can be compatible with the existing file system, and has better stability.

Paper Details

Date Published: 15 September 2005
PDF: 6 pages
Proc. SPIE 5966, Seventh International Symposium on Optical Storage (ISOS 2005), 59660Q (15 September 2005); doi: 10.1117/12.649627
Show Author Affiliations
Faling Yi, Huazhong Univ. of Science & Technology (China)
Changsheng Xie, Huazhong Univ. of Science & Technology (China)
Fei Wu, Huazhong Univ. of Science & Technology (China)
Dezhi Han, Huazhong Univ. of Science & Technology (China)

Published in SPIE Proceedings Vol. 5966:
Seventh International Symposium on Optical Storage (ISOS 2005)
Fuxi Gan; Lisong Hou, Editor(s)

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