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:
Dec. 14, 2021
Filed:
Dec. 06, 2017
International Business Machines Corporation, Armonk, NY (US);
Kushal S. Patel, Pune, IN;
Sarvesh S. Patel, Pune, IN;
Subhojit Roy, Pune, IN;
Bharti Soni, Pune, IN;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A computer-implemented method, according to one embodiment, includes: receiving an unmap command, the unmap command identifying a first logical extent located in a higher storage tier of a multi-tiered data storage system having the higher storage tier and a lower storage tier, sending an instruction to unmap the first logical extent from the higher storage tier, sending an instruction to decrement a heat associated with the unmapped first logical extent in response to sending the instruction to unmap the first logical extent, sending an instruction to remove the unmapped first logical extent from the higher storage tier, selecting, using a heat map, at least one second logical extent located in the lower storage tier for promotion to the higher storage tier, and sending an instruction to relocate the at least one second logical extent from the lower storage tier to the higher storage tier.