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:
Feb. 10, 2015
Filed:
Jul. 24, 2014
Emc Corporation, Hopkinton, MA (US);
Ao Ma, Palo Alto, CA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Techniques for disk scrubbing are described herein. According to one embodiment, for each of the sectors of a storage disk, a read operation is issued to a sector of a first storage disk of a storage system. In response to an error returned from the read operation, it is determined whether the sector is a live sector, first data is generated as random data if the sector is not a live sector, and the first data is written to the sector to trigger a remap process that remaps a logical block address associated with the sector to another physical block address. The remap process increments the reallocated sector count. It is determined whether the first storage disk is vulnerable based on a number of reallocated sectors resulted from the first storage disk based on the remap process, which is performed by internal logic of the first storage disk.