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:
Dec. 20, 2005
Filed:
Oct. 12, 2000
Robert Alan Cochran, Rocklin, CA (US);
Harald Burose, Boeblingen, DE;
Robert Alan Cochran, Rocklin, CA (US);
Harald Burose, Boeblingen, DE;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A method and system for employing fast, but easily corrupted mass storage for reliably backing up objects, such as files and database. In a LUN-based mass storage device, a timestamp is updated or a counter incremented after each I/O operation directed to the LUN that may alter data stored on the LUN. An entity may retrieve from the mass storage and save a current timestamp or current counter for a LUN at the time a backup is made to the LUN. Later, prior to using the backup in a restore operation, the entity may re-retrieve the timestamp or counter for the LUN and compare it to the saved timestamp or counter in order to determine whether or not the backup has been potentially altered.