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:
Jan. 21, 2020
Filed:
Nov. 28, 2018
International Business Machines Corporation, Armonk, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Migrating data in a tiered storage system. The tiered storage system includes an upper tier with at least one storage device and a lower tier with at least one storage device. Data on a storage device includes one or more extents, and each extent contains one or more grains. I/O activity of grains is recorded during a predefined time interval. For each extent, a mean heat value over grains in the extent during the predefined time interval is calculated from the recorded I/O activity, where a heat value is a numerical indication of frequency of access of a grain, and a spike heat indicator, which measures non-uniformity of heat values of grains in the extent is calculated. Two extents with mean heat values that differ at most by a predefined threshold are identified, and the extent with a greater spike heat indicator is migrated to an upper tier.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile