Moving change log tables to align to zones
US11436153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2020 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Jun 30, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure generally relates to methods of operating storage devices. The storage device is comprised of a controller, a random access memory (RAM) unit, and a NVM unit, wherein the NVM unit is comprised of a plurality of zones. The RAM unit comprises a first logical to physical address table and the NVM unit comprises a second logical to physical address table. The zones are partitioned into sections, and each partitioned section aligns with a change log table. Data is written to each zone sequentially, and only one partitioned section is updated at a time for each zone. Each time a zone is erased or written to in the NVM unit, the first logical to physical address table is updated and the second logical to physical address table is periodically updated to match the first logical to physical address table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.