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. 03, 2012
Filed:
Jul. 15, 2009
William Lomelino, Westminister, CO (US);
Arindam Banerjee, Bangalore, IN;
Pradeep Radhakrishna Venkatesha, Bangalore, IN;
Jayaraj Rajappan, Bangalore, IN;
William Lomelino, Westminister, CO (US);
Arindam Banerjee, Bangalore, IN;
Pradeep Radhakrishna Venkatesha, Bangalore, IN;
Jayaraj Rajappan, Bangalore, IN;
LSI Corporation, Milpitas, CA (US);
Abstract
A system includes a data storage device, a controller coupled with the data storage device, a backup device coupled with the controller for backing up a modified portion of data and volatile memory metadata stored by the controller, and a backup power source for powering the controller. The controller includes a pre-specified region of volatile memory for storing backup device metadata for managing a modified portion of data, the metadata comprising one or more intents corresponding to modified data written back to the data storage device. The controller is configured to invalidate the one or more intents. During a restore operation, the controller is configured to store the backup device metadata in the pre-specified region of volatile memory when a charge on the backup power source is at least a minimum threshold charge and to store the updated backup device metadata in the backup device during an interruption of power.