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Proceedings Paper

NAFFS: network attached flash file system for cloud storage on portable consumer electronics
Author(s): Lin Han; Hao Huang; Changsheng Xie
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Paper Abstract

Cloud storage technology has become a research hotspot in recent years, while the existing cloud storage services are mainly designed for data storage needs with stable high speed Internet connection. Mobile Internet connections are often unstable and the speed is relatively low. These native features of mobile Internet limit the use of cloud storage in portable consumer electronics. The Network Attached Flash File System (NAFFS) presented the idea of taking the portable device built-in NAND flash memory as the front-end cache of virtualized cloud storage device. Modern portable devices with Internet connection have built-in more than 1GB NAND Flash, which is quite enough for daily data storage. The data transfer rate of NAND flash device is much higher than mobile Internet connections[1], and its non-volatile feature makes it very suitable as the cache device of Internet cloud storage on portable device, which often have unstable power supply and intermittent Internet connection. In the present work, NAFFS is evaluated with several benchmarks, and its performance is compared with traditional network attached file systems, such as NFS. Our evaluation results indicate that the NAFFS achieves an average accessing speed of 3.38MB/s, which is about 3 times faster than directly accessing cloud storage by mobile Internet connection, and offers a more stable interface than that of directly using cloud storage API. Unstable Internet connection and sudden power off condition are tolerable, and no data in cache will be lost in such situation.

Paper Details

Date Published: 24 January 2013
PDF: 10 pages
Proc. SPIE 8782, 2012 International Workshop on Information Storage and Ninth International Symposium on Optical Storage, 87820R (24 January 2013); doi: 10.1117/12.2014838
Show Author Affiliations
Lin Han, Huazhong Univ. of Science and Technology (China)
Hao Huang, Huazhong Univ. of Science and Technology (China)
Changsheng Xie, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 8782:
2012 International Workshop on Information Storage and Ninth International Symposium on Optical Storage
Fuxi Gan; Zhitang Song, Editor(s)

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