Data fingerprint distribution on a data storage system
US10782882B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2019 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Apr 18, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0643
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Fingerprints of data portions are distributed in a balanced manner across active controllers of a data storage system, and may be done so in such a manner that, when a new active controller is added to the system, fingerprint ownership and movement between pre-existing active controllers, and active controllers overall, is minimized When a new active controller is added to the system and fingerprints are redistributed, no fingerprint ownership may be re-assigned between pre-existing active controllers and no fingerprints may be moved between pre-existing active controllers, for example, between local memories of the active controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.