Method and apparatus for preventing the use of corrupt data in a

Details Method and apparatus for preventing the use of corrupt data in a Method and apparatus for preventing the use of corrupt data in a

1995-06-28

1996-12-03

Beausoliel, Jr., Robert W.

39518205, G06F 1100

Patent

active

055816908

ABSTRACT:
A storage system having a plurality of disks arranged into a RAID array and a logging process and apparatus that identifies corrupt or invalid data and which prevents the corrupt or invalid data from being sent to a user application or used in any computations internal to the functioning of the array. In the preferred embodiment, a plurality of status bits, each having a first and second state are associated with each data block and parity block. If the status bit indicates that the block may contain corrupt or invalid information then that block is not used in regenerating data for an unavailable block or sent to a user application upon a read request.

REFERENCES:
patent: 4092732 (1978-05-01), Ouchi
patent: 4434487 (1984-02-01), Rubinson et al.
patent: 4775978 (1988-10-01), Hartness
patent: 4914656 (1990-04-01), Dunphy et al.
patent: 4989205 (1991-01-01), Dunphy et al.
patent: 4989206 (1991-01-01), Dunphy et al.
patent: 5088081 (1992-02-01), Farr
patent: 5166936 (1992-11-01), Ewert et al.
patent: 5195100 (1993-03-01), Katz et al.
patent: 5208813 (1993-05-01), Stallmo
patent: 5255270 (1993-09-01), Yanai et al.
patent: 5261084 (1993-11-01), Hashiguchi et al.
patent: 5504858 (1996-04-01), Ellis et al.
A Case for Redundant Array of Inexpensive Disks (RAID), David A. Patterson, Garth Gibson, Randy H. Katz, Report No. UCB/CSD 87/391, Dec., 1987, Computer Science Division (EECS), University of California, Berkeley, CA 94720.
A Case for Redundant Arrays of Inexpensive Disks (RAID), David A. Patterson, Garth Gibson, and Randy H. Katz, ACM SIGMOD Conference--Jun. 1-3, 1988, Chicago, Illinois.
Two Papers on RAIDs, Peter Chen, Garth Gibson, Randy H. Katz, David A. Patterson, Martin Schulze, Report No. UCB/CSD 88/479, Dec., 1988, Computer Science Division (EECS), University of California, Berkeley, CA 94720.
An Introduction to RAID--Redundant Arrays of Inexpensive Disks, Peter McLean, Apr. 24, 1991, Digital Equipment Corporation--CX01-2/N26.
Software and Performance Issues in the Implementation of a RAID Prototype, Edward K. Lee, Report No. UCB/CSD 90/573, May 1990, Computer Science Division (EECS), University of California, Berkeley, CA 94720.
A Queuing Analysis of RAID Architectures, Schenze Chen and Don Towsley, COINS Tech. Report 91-71, Department of Computer and Information Science, University of Massachusetts, Amherst, MA 01003.
The Digital Guide to RAID Storage Technology, 1992, Digital Equipment Corporation.

Affiliated with

Also associated with

Rating

Method and apparatus for preventing the use of corrupt data in a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for preventing the use of corrupt data in a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for preventing the use of corrupt data in a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-793457