Row-diagonal parity technique for enabling efficient recovery from double failures in a storage array
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 31, 2006
Grant Date -
Jul 3, 2003
app pub date -
Dec 28, 2001
filing date -
Dec 28, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A 'row-diagonal' (R-D) parity technique reduces overhead of computing diagonal parity for a storage array adapted to enable efficient recovery from the concurrent failure of two storage devices in the array. The diagonal parity is computed along diagonal parity sets that collectively span all data disks and a row parity disk of the array. The parity for all of the diagonal parity sets except one is stored on the diagonal parity disk. The R-D parity technique provides a uniform stripe depth and an optimal amount of parity information.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully