Ordering reads to limit collisions in a non-volatile memory (NVM)
US11822817B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2021 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Dec 8, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for managing data in a storage device, such as a solid-state drive (SSD). In some embodiments, a data storage device includes a main non-volatile memory (NVM), a host command queue that lists pending host read and host write commands, and a write cache which temporarily stores write data sets pending transfer to the NVM responsive to execution of the associated host write commands in the host command queue. A collision prediction circuit predicts a rate of future collisions involving the cached write data sets. A storage manager directs storage of the write data sets to a first target location responsive to the rate of future collisions being at a first level, and directs storage of the write data sets to a different, second target location responsive to the rate of future collisions being at a different, second level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.