Mitigating flash wear when performing storage tiering
US10613790B1 · kind B1 · utility
3Cited by
16References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 30, 2016 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Feb 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0685
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for performing storage tiering accesses allocation metadata in a data storage system and applies that allocation metadata when relocating data from a selected extent to a target extent. The selected extent includes a range of contiguous blocks. The allocation metadata may designate each of these blocks as either allocated or free. When relocating data from the selected extent to the target extent, the technique copies data of the selected extent on a per-block basis, checking whether that block is allocated or free before copying it to the target extent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.