Policy based data shredding for storage controller

Details Policy based data shredding for storage controller Policy based data shredding for storage controller

2005-02-23

2010-06-15

Kim, Matt (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

Reexamination Certificate

active

07739462

ABSTRACT:
Policy based data shredding is provided to be executed in a storage controller. A logical volume stored on media, such as magnetic disk drives, may be assigned one or more possible shredding policies. Storing and executing the policies in the controller is more efficient than performing host-based shredding and requires the use of less valuable bandwidth between the host and the controller. In addition, the controller is aware of failures, degradation and offline status of each drive in an array, and is able to thereby terminate or modify a shredding operation if necessary. Each policy includes the number of write passes to be performed on the media location in which the volume is stored and the pattern to write on the media location. The policy may also indicate whether to update a parity area during each of a plurality of write passes or only on the first.

REFERENCES:
patent: 3192102 (1965-06-01), Nolan
patent: 5450609 (1995-09-01), Schultz et al.
patent: 5463765 (1995-10-01), Kakuta et al.
patent: 5996046 (1999-11-01), Yagisawa et al.
patent: 6202124 (2001-03-01), Kern et al.
patent: 6338114 (2002-01-01), Paulsen et al.
patent: 6507911 (2003-01-01), Langford
patent: 6557140 (2003-04-01), Kakuta et al.
patent: 2002/0103980 (2002-08-01), Crockett et al.
patent: 2002/0199059 (2002-12-01), Riedle et al.
patent: 2003/0065656 (2003-04-01), de la Torre et al.
patent: 2003/0079078 (2003-04-01), Zipprich et al.
patent: 2003/0135808 (2003-07-01), Kakuta et al.
patent: 2003/0196036 (2003-10-01), Gibble et al.
patent: 2004/0010661 (2004-01-01), Katsuragi et al.
patent: 2005/0154582 (2005-07-01), Kortenoeven et al.
http://web.archive.org/web/20000920042117/http://www.ecs.umass.edu/ece/koren/architecture/Raid/basicRAID.html; Sep. 20, 2000; pp. 6.
http://web.archive.org/web/20011019034654/scsi.radified.com/scsi—01.htm; Oct. 19, 2001; pp. 4.
http://web.archive.org/web/20000902023412/http://www.pcguide.com/ref/hdd/perf/raid/concepts/perfDegraded-c.html; Sep. 2, 2000; pp. 2.
http://web.archive.org/web/20000920042117/http://www.ecs.umass.edu/ece/koren/architecture/Raid/basicRAID. html ; Sep. 20, 2000; pp. 6.
http://web.archive.org/web/20011019034654/scsi.radified.com/scsi—01.htm; Oct. 19, 2001; pp. 4.
http://web.archive.org/web/20000902023412/http://www.pcguide.com/ref/hdd/perf/raid/concepts/perfDegraded-c.html; Sep. 2, 2000; pp. 2.
Glossary, Apr. 10, 2004, pp. 1-22□□http://web.archive.org/web/20040410163202/http://docs.rinet.ru/NTServak/glossary.htm.
Webopedia, “Interface”, Mar. 17, 2003, pp. 1-3, http://www.webopedia.com/TERM/i/interface.html.
Jeff Tyson, (How SCSI Works), Dec. 9, 2003, pp. 1-2, http://web.archive.org/web/20031209185444/http://www.howstuffworks.com/scsi.htm.
Pastaman, (What Are The Advantages/Disadvantages Of USing SCSI), Aug. 12, 2003, pp. 1-7, http://www.answerbag.com/q—view/555.

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