Data reduction reporting in storage systems
US10521400B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2017 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Jul 17, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/184
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus are provided for reporting space savings due to data reduction in storage systems. An exemplary method comprises establishing a leaf pointer for a plurality of allocation units of data in a storage system; for at least a first allocation unit of data matching a second allocation unit of data, replacing the leaf pointer for the first allocation unit with a deduplication pointer to the leaf pointer of the second allocation unit; determining a total number of pointers as a sum of a number of the leaf pointers and a number of the deduplication pointers; determining a difference between the total number of pointers and the number of leaf pointers; and providing a data reduction attributed to deduplication based on the difference. The allocation units of data are optionally also compressed. Data reduction attributed to the compression can optionally be determined independent of the data reduction attributed to the deduplication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.