Increasing the speed of data migration
US10809937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2019 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Apr 20, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/502
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a computer-implemented method to increase the speed of extent migration. The method comprises determining a plurality of extents to migrate. The extents are stored in a source tier and the source tier is one tier of a tiered storage system. The method also comprises forming a first queue, wherein the first queue contains the plurality of extents to be migrated. The method further includes selecting a first extent to copy to a target tier. The copying comprises dividing the extent into a plurality of strides, forming a second queue containing the strides, selecting and copying the first stride, and removing the first stride from the second queue. The method further comprises changing a mapping table to point to the target tier, removing the first extent from the first queue, and releasing the first area of the first tier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.