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:
Apr. 23, 2013
Filed:
Dec. 28, 2009
Xiangping Chen, Shrewsbury, MA (US);
Khang Can, Framingham, MA (US);
Manish Madhukar, Shrewsbury, MA (US);
David Harvey, Newton, MA (US);
Dean Throop, Efland, NC (US);
Mark Ku, Wollaston, MA (US);
Xiangping Chen, Shrewsbury, MA (US);
Khang Can, Framingham, MA (US);
Manish Madhukar, Shrewsbury, MA (US);
David Harvey, Newton, MA (US);
Dean Throop, Efland, NC (US);
Mark Ku, Wollaston, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Methods and systems are disclosed for relocating data in a physical storage pool comprising a plurality of storage tiers having differing performance characteristics, the physical storage pool being mapped into one or more logical units, each logical unit comprising a plurality of logical slices of data storage. The methods and systems can involve receiving a relocation list, the relocation list including, for each of a plurality of logical slices, a slice identifier, a temperature value, and a current physical location, determining a destination tier for each logical slice on the relocation list, evaluating for each logical slice on the relocation list a performance gain expected to be achieved by moving the logical slice from its current physical location to a new location in the destination tier, and relocating data in a logical slice from its current physical location to the new location based on the evaluation.