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:
May. 08, 2018
Filed:
Jun. 30, 2011
Adnan Sahin, Needham, MA (US);
Alexandr Veprinsky, Brookline, MA (US);
Marik Marshak, Newton, MA (US);
Hui Wang, Upton, MA (US);
Xiaomei Liu, Natick, MA (US);
Owen Martin, Hopedale, MA (US);
Sean C. Dolan, Belmont, MA (US);
Adnan Sahin, Needham, MA (US);
Alexandr Veprinsky, Brookline, MA (US);
Marik Marshak, Newton, MA (US);
Hui Wang, Upton, MA (US);
Xiaomei Liu, Natick, MA (US);
Owen Martin, Hopedale, MA (US);
Sean C. Dolan, Belmont, MA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
Identifying data for placement in a storage system having a plurality of storage classes includes subdividing the data into portions, for each of the portions, independently determining at least one score for a particular portion based on a metric corresponding to access of the particular portion, where the at least one score for the particular portion is independent of scores for other ones of the portions, and identifying sub-portions of data for placement in a particular storage class based on the at least one score of a portion of data corresponding to the sub-portions. The at least one score may be based on short term access statistics and long term access statistics. The access statistics may include read misses, writes, and prefetches.