Storage device and method for sudden power off recovery thereof
US11467645B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2021 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Jun 7, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed are a storage device and a method for sudden power off recovery thereof. The method includes: performing a first snapshot operation on the storage device to obtain system information, and storing the system information and a first tag into a non-volatile memory when the storage device in an idle state; performing a second snapshot operation on the storage device to obtain system information of the storage device, and storing the system information and a second tag into the non-volatile memory when at least one of the following conditions occurring: updating a logical-to-physical mapping table in the non-volatile memory, executing a garbage collection operation, and programming a new block; searching the latest system information in the non-volatile memory when recovering supply of power; when determining that the searched system information includes the first tag, performing a lightweight sudden power off recovery operation in the storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.