The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2013
Filed:
Jan. 09, 2009
Richard P. Jernigan, Iv, Sewickley, PA (US);
Robert Wyckoff Hyer, Jr., Mars, PA (US);
Michael L. Kazar, Pittsburgh, PA (US);
Daniel S. Nydick, Wexford, PA (US);
Richard P. Jernigan, IV, Sewickley, PA (US);
Robert Wyckoff Hyer, Jr., Mars, PA (US);
Michael L. Kazar, Pittsburgh, PA (US);
Daniel S. Nydick, Wexford, PA (US);
NetApp, Inc., Sunnyvale, CA (US);
Abstract
The present invention provides a system and a method for utilizing a parity protection module to back up data on striped aggregates. Specifically, the system computes parity data for data stored at a particular location of each of a plurality of constituent aggregates, and stores the parity on one of the constituent aggregates that is a parity owner for that particular location of data. In the event one of the constituent aggregates fails, new data may still be accessed by the system (the striped aggregates), both to write new data, and to read data stored on the failed aggregate. In particular, the parity protection module allows clients to read data from a failed aggregate by running a reverse parity computation, which may also be used to restore the data to the failed aggregate.