Method and system for cache-based dropped write protection...

Details Method and system for cache-based dropped write protection... Method and system for cache-based dropped write protection...

2011-03-15

2011-03-15

Baderman, Scott T (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S048000

Reexamination Certificate

active

07908512

ABSTRACT:
A method and system for cache-based dropped write protection in data storage systems are provided. An implementation involves detecting undetected write errors in a storage system, by writing data to a storage medium from a data cache; maintaining a copy of the data in the data cache until said data on the storage medium is validated or said data needs to be evicted from the data cache; and prior to eviction of said data from the data cache, maintaining metadata for said data in a metadata cache until the data written to the storage medium has been validated against the metadata.

REFERENCES:
patent: 5255270 (1993-10-01), Yanai et al.
patent: 5408366 (1995-04-01), Bentley et al.
patent: 5488702 (1996-01-01), Byers et al.
patent: 5592618 (1997-01-01), Micka et al.
patent: 6898036 (2005-05-01), Gill et al.
patent: 6931576 (2005-08-01), Morrison et al.
patent: 7020805 (2006-03-01), Talagala et al.
patent: 7353432 (2008-04-01), Talagala et al.
patent: 7454668 (2008-11-01), Yochai et al.
patent: 2003/0145270 (2003-07-01), Holt
patent: 2004/0003316 (2004-01-01), Meng et al.
patent: 2004/0123032 (2004-06-01), Talagala et al.
patent: 2004/0153746 (2004-08-01), Talagala et al.
patent: 2005/0005191 (2005-01-01), Judd
patent: 2006/0109792 (2006-05-01), Broadbent
patent: 2006/0179381 (2006-08-01), Durica et al.
ZFS, “What is ZFS”, What is ZFS? at OpenSolaris.org, http://www.opensolaris.org/os/community/zfs/whatis/, Feb. 29, 2008, pp. 1-2.
Qin Xin, et al., “Reliability Mechanisms for Very Large Storage Systems,” Mass Storage Systems & Technologies, (MSST 2003), p. 146, 20th IEEE/11th NASA Goddard Conference.
Schwartz et al., “Disk Scrubbing in Large Archival Storage Systems”, Proc. 12th IEEE/ACM Int'l Symp. on MASCOTS, Oct. 2004, http://www.ssrc.ucsc.edu/Papers/schwartz-mascots04.pdf.
RAID 5, Standard Raid Levels, http://en.wikipedia.org/wiki/RAID—5, Feb. 29, 2008, pp. 6-8.
Longitudinal redundancy check (LRC), http://en.wikipedia.org./wiki/Longitundinal—Redundancy—Check, Mar. 5, 2008, pp. 1.

Affiliated with

Also associated with

Rating

Method and system for cache-based dropped write protection... 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 system for cache-based dropped write protection..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for cache-based dropped write protection... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2763053