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. 20, 2010
Filed:
May. 16, 2003
Svend Frolund, Mountain View, CA (US);
Arif Merchant, Los Altos, CA (US);
Yasusuhi Saito, Mountain View, CA (US);
Susan Spence, San Jose, CA (US);
Alistair Veitch, Mountain View, CA (US);
Svend Frolund, Mountain View, CA (US);
Arif Merchant, Los Altos, CA (US);
Yasusuhi Saito, Mountain View, CA (US);
Susan Spence, San Jose, CA (US);
Alistair Veitch, Mountain View, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Read, write and recovery operations for replicated data are provided. In one aspect, a system for redundant storage of data included a plurality of storage devices and a communication medium for interconnecting the storage devices. At least two of the storage devices are designated devices for storing a block of data. Each designated device has a version of the data and a first timestamp that is indicative of when the version of data was last updated and a second timestamp that is indicative of any pending update to the block of data. The read, write and recovery operations are performed to the data using the first and second timestamps to coordinate the operations among the designated devices.