Disk Shadowing.

Dina Bitton, Jim Gray: Disk Shadowing. VLDB 1988: 331-338

@inproceedings{DBLP:conf/vldb/BittonG88,
  author    = {Dina Bitton and
               Jim Gray},
  editor    = {Fran\c{c}ois Bancilhon and
               David J. DeWitt},
  title     = {Disk Shadowing},
  booktitle = {Fourteenth International Conference on Very Large Data Bases,
               August 29 - September 1, 1988, Los Angeles, California, USA,
               Proceedings},
  publisher = {Morgan Kaufmann},
  year      = {1988},
  isbn      = {0-934613-75-3},
  pages     = {331-338},
  ee        = {db/conf/vldb/BittonG88.html},
  crossref  = {DBLP:conf/vldb/88},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

Disk shadowing is a technique for maintaining a set of two or more identical disk images on separate disk devices. Its primary purpose is to enhance reliability and availability of secondary storage by providing multiple paths to redundant data. However, shadowing can also boost I/O performance. In this paper, we contend that intelligent device scheduling of shadowed disks increases the I/O rate, by allowing parallel reads and by substantially reducing the average seek time for random reads. In particular, we develop an analytic model which shows that the seek time for a random read in a shadow set is a monotonic decreasing function of the number of disks in the set.

Copyright © 1988 by the VLDB Endowment. Permission to copy without fee all or part of this material is granted provided that the copies are not made or distributed for direct commercial advantage, the VLDB copyright notice and the title of the publication and its date appear, and notice is given that copying is by the permission of the Very Large Data Base Endowment. To copy otherwise, or to republish, requires a fee and/or special permission from the Endowment.

Online Paper

Download PDF file (www.vldb.org, Darmstadt, Germany)
Download PDF file (www.acm.org, New York, USA)

ACM SIGMOD Anthology

CDROM Version: Load the CDROM "Volume 1 Issue 4, VLDB '75-'88" and ...

Windows: Click the letter of your CD drive
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Mac: Click here
UNIX/LINUX: mount the CD and click on the path of your mount point:
/Anthology/vldb7588 or /cdrom

DVD Version: Load ACM SIGMOD Anthology DVD 1" and ...

Windows: Click the letter of your CD drive
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Mac: Click here
UNIX/LINUX: mount the DVD and click on the path of your mount point:
/Anthology/aDVD1 or /dvd

Printed Edition

François Bancilhon, David J. DeWitt (Eds.): Fourteenth International Conference on Very Large Data Bases, August 29 - September 1, 1988, Los Angeles, California, USA, Proceedings. Morgan Kaufmann 1988, ISBN 0-934613-75-3

References

[BT85]: ...
[Ki85]: Michelle Y. Kim: Synchronized Disk Interleaving. IEEE Trans. Computers 35(11): 978-988(1986)
[MGB74]: ...
[PGK87]: David A. Patterson, Garth A. Gibson, Randy H. Katz: A Case for Redundant Arrays of Inexpensive Disks (RAID). SIGMOD Conference 1988: 109-116
[SG86]: Kenneth Salem, Hector Garcia-Molina: Disk Striping. ICDE 1986: 336-342
[STH83]: ...
[TP72]: Toby J. Teorey, Tad B. Pinkerton: A Comparative Analysis of Disk Scheduling Policies. Commun. ACM 15(3): 177-184(1972)
[Sit86]: ...