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:
Mar. 23, 2010
Filed:
Jun. 10, 2004
Owen Theodore Anderson, Chapel Hill, NC (US);
Binny Sher Gill, San Jose, CA (US);
Leo Shyh-wei Luan, Saratoga, CA (US);
Manuel Vasconcellos Pereira, Iii, Gilroy, CA (US);
Geoffrey Albert Riegel, Santa Cruz, CA (US);
Owen Theodore Anderson, Chapel Hill, NC (US);
Binny Sher Gill, San Jose, CA (US);
Leo Shyh-Wei Luan, Saratoga, CA (US);
Manuel Vasconcellos Pereira, III, Gilroy, CA (US);
Geoffrey Albert Riegel, Santa Cruz, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Addressed is a system and method for remote data caching and replication by local copy maintenance of remote data within a SAN file system. Distributed Storage Tank (DST), an extension to a SAN file system, provides for transparent SAN client access of local copies by importing, exporting, and storing data using network file access protocols as well as by providing assurance of metadata and file content validity. A Remote Access Agent (RAA) handles protocol implementation and conversion necessary for communication with remote data sources. Controlled by a consistency policy, consistency is maintained by RAA fetching and updating local copies if modifications have occurred to a file since it was first stored as a local copy in local storage. Additionally, RAA returns metadata pertaining to the requested data. A SAN client obtains metadata corresponding to the requested data and utilizes it to directly access locally stored copies of remote data.