Heat score-based tiering of data between different storage tiers of a file system
US12360960B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2023 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | Jan 11, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/185
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The described technology is generally directed towards maintaining a heat score per file based on a file's access/activity level, and using the heat score to re-tier files from faster to slower storage and vice-versa. Files on a slower tier that have more activity are thereby moved (“up-tiered”) to a faster access storage tier, while the files that have less activity on the faster access storage tier are moved (“down-tiered”) to a slower access storage tier. The heat score for a file is increased based on more input-output operation activity, and decayed over time. The decaying can be based on a relative importance value (e.g., business value) assigned to the file or a domain that includes the file. Ordering the files based on their respective heat scores allows only a fraction of the files to be considered for re-tiering before the re-tiering moves are performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.