Distributed open writable snapshot copy facility using file...

Details Distributed open writable snapshot copy facility using file... Distributed open writable snapshot copy facility using file...

2005-03-21

2009-06-09

Lane, Jack A (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S161000, C711S162000, C707S793000, C707S793000

Reexamination Certificate

active

07546431

ABSTRACT:
A read-write snapshot copy facility is constructed from a hierarchical storage management facility. The read-write snapshot copy file system initially comprises stub files pointing to the files in a read-only snapshot copy file system. When an application writes to a file in the read-write snapshot copy, the read-write snapshot copy facility migrates a copy of the file to replace the stub file, and then writes to the migrated file. Because the read-write snapshot copy facility references the files in the read-only snapshot file system in a network namespace using standard protocols such as NFS or CIFS, the read-write snapshot copy facility permits referencing of distributed read-only snapshot file systems in an open (heterogeneous) network environment, and the read-write snapshot copy is scalable by linking the read-write snapshot copy facility to multiple file servers containing read-only snapshot file systems.

REFERENCES:
patent: 5835954 (1998-11-01), Duyanovich et al.
patent: 5893140 (1999-04-01), Vahalia et al.
patent: 5923878 (1999-07-01), Marsland
patent: 5963962 (1999-10-01), Hitz et al.
patent: 5974563 (1999-10-01), Beeler, Jr.
patent: 6076148 (2000-06-01), Kedem
patent: 6078929 (2000-06-01), Rao
patent: 6490666 (2002-12-01), Cabrera et al.
patent: 6665689 (2003-12-01), Muhlestein
patent: 6757794 (2004-06-01), Cabrera et al.
patent: 6792518 (2004-09-01), Armangau et al.
patent: 6804719 (2004-10-01), Cabrera et al.
patent: 7326709 (2008-02-01), Yuan et al.
patent: 2004/0107222 (2004-06-01), Venkatesh et al.
patent: 2005/0246716 (2005-11-01), Smith et al.
“Celerra Data Migration Service (CDMS),” EMC Corporation, Hopkinton, MA, Jan. 2002, 14 pages.
“EMC Centera Solutions, EMC Avalon-Centera Single Point of Access Solution,” EMC Corporation, Hopkinton, MA, Oct. 2002, 4 pages.
Technology Brief—Aug. 2002, “Automated Resource Management,” The Enterprise Storage Group, Milford, MA, Aug. 2002, 3 pages.
“Oracle9i with Celerra File Serve over NFS,” EMC Corporation, Hopkinton, MA, Nov. 22, 2002, 15 pages.
Nancy Marrone, Product Brief—Apr. 2003, “Astrum's Active Storage Management Solution Key to EMC's Mid-Tier Software Offering,” The Enterprise Storage Group, Milford, MA, Apr. 2003, 2 pages.
Data Sheet, “EMC AVALONidm, Intelligent data management to lower total cost of storage,” EMC Corporation, Hopkinton, MA, Jul. 2003, 4 pages.
Jamie Gruener et al., “Digital Content and Storage Management in the Media and Entertainment Industry,” The Yankee Group, Boston, MA, Nov. 2003, 16 pages.
On Life in Information, vol. 1, 2004, Doing More with Storage, EMC Corporation, Hopkinton, MA, Mar. 2004, 32 pages.
“Information Lifecycle Management Updates,” EMC Corporation, Hopkinton, MA, Oct. 2004, 2 pages.
EMC Centera Partner Solutions, “EMC-LEGATO E-mail Archiving Solution,” EMC Corporation, Hopkinton, MA, Jul. 2004, 4 pages.
“EMC: Information Lifecycle Management: Real Results for Business Realities,” EMC Corporation, Hopkinton, MA, http://www.emc.com/ilm/ilm—update, printed Jan. 26, 2005, 4 pages.
“OLE Component Object Model,” Object Services and Consulting, Inc., Dallas, Texas, http://www.objs.com/x3h7/ole2.htm, printed Mar. 14, 2005, 7 pages.

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