FAXtrac: Fast Extraction of Disk Layout

Author

Chu, Xiaowen ; Ouyang, Kai ; Chang, Xiaolei

Author_Institution

Dept. of Comput. Sci., Hong Kong Baptist Univ., Hong Kong, China

fYear

2009

fDate

9-11 July 2009

Firstpage

309

Lastpage

314

Abstract

The low-level disk characteristics play a vital role for the I/O performance optimization in disk storage systems. This paper presents FAXtrac, a tool for automatically and efficiently extracting the exact disk layout, i.e., the number of sectors of each disk track. FAXtrac includes three algorithms, namely SptExplore, TrackExplore, and RemoveNoise, to ensure the correctness and speediness of the extraction of disk layout. We tested FAXtrac on a number of different disk models. It took only 75 minutes to extract the detailed disk layout for a 250 GB SATA disk, which shortened the time by two orders of magnitude as compared with an existing solution. We believe that FAXtrac is a valuable tool for the hard disk storage research community.

Keywords

disc drives; hard discs; FAXtrac; RemoveNoise; SptExplore; disk layout; disk layout extraction; disk storage systems; disk track; hard disk drive; hard disk storage; low-level disk characteristic; storage capacity 250 Gbit; time 75 min; Algorithm design and analysis; Computer architecture; Computer science; Disk drives; Hard disks; Internet; Magnetic heads; Optimization; Robustness; Testing; disk layout; hard disk drive;

fLanguage

English

Publisher

ieee

Conference_Titel

Networking, Architecture, and Storage, 2009. NAS 2009. IEEE International Conference on

Conference_Location

Hunan

Print_ISBN

978-0-7695-3741-2

Type

conf

DOI

10.1109/NAS.2009.59

Filename

5197345