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. 21, 2006
Filed:
Jun. 20, 2002
Kevin J. Clarke, Princeton, MA (US);
Steve Mcpolin, Nepean, CA;
Robert Gittins, Westminster, CO (US);
Anton Rang, Houlton, WI (US);
Kevin J. Clarke, Princeton, MA (US);
Steve McPolin, Nepean, CA;
Robert Gittins, Westminster, CO (US);
Anton Rang, Houlton, WI (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
In a computer system, a distributed storage system having a data coherency unit for maintaining data coherency across a number of storage devices sharing such data is described. The data coherency unit includes logic to monitor data transition states in each of the data storage devices to detect when the processing status of data being shared by two or more of the storage devices changes. The data coherency unit advantageously ensures a status change in shared data in one storage device is broadcast to other storage devices having copies of the data without having each storage device independently monitor adjourning storage devices to detect data state changes.