Invention Grant
- Patent Title: Integration of the frequency of usage of tracks in a tiered storage system into a cache management system of a storage controller
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Application No.: US15964904Application Date: 2018-04-27
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Publication No.: US10691596B2Publication Date: 2020-06-23
- Inventor: Lokesh M. Gupta , Matthew G. Borlick , Kyle A. Anderson , Kevin J. Ash
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Konrad Raynes Davda & Victor LLP
- Agent Rabindranath Dutta
- Main IPC: G06F12/0811
- IPC: G06F12/0811 ; G06F12/123
Abstract:
A storage tier management application indicates a heat index for each extent of a plurality of extents, wherein a higher heat index indicates a greater frequency of usage of tracks of an extent than a lower heat index. A least recently used (LRU) list for cache management is configured to perform demotion of tracks of a lower heat index prior to demotion of tracks of a higher heat index.
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