Adaptive storage reliability management
US9952781B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2014 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Jan 30, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2029/0409
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage controller identifies a storage location within a storage division that corresponds to a high error rate. In response, the storage controller may refresh data stored on the storage division by relocating data from the storage division and/or initializing (e.g., erasing) the storage division. In some embodiments, the storage division is selectively refreshed by relocating data from the storage location(s) having high error rates, while deferring a full relocation of other data from the storage division. The storage division may be selectively refreshed based on reliability characteristics of the storage division, such as the remaining data retention time calculated for the storage division.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.