The ever increasing need for I/O bandwidth will be met with ever larger arrays of disks. These arrays require redundancy to protect against data loss. This paper examines alternative choices for encodings, or codes, that reliably store information in disk arrays. Codes are selected to maximize mean time to data loss or minimize disks containing redundant data, but are all constrained to minimize performance penalties associated with updating information or recovering from catastrophic disk failures. We show codes that give highly reliable data storage with low redundant data overhead for arrays of 1000 information disks.
Title
Coding Techniques for Handling Failures in Large Disk Arrays
Published
1988-12-01
Full Collection Name
Electrical Engineering & Computer Sciences Technical Reports
Other Identifiers
CSD-88-477
Type
Text
Extent
29 p
Archive
The Engineering Library
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