Techniques for managing writes in nonvolatile memory
US11586385B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2021 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | Jun 14, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This disclosure provides techniques for managing writes of data useful for storage systems that do not permit overwrite of a logical address. One implementation provides a nonvolatile memory storage drive, such as a flash memory drive, that provides support for zoned drive and/or Open Channel-compliant architectures. Circuitry on the storage drive tracks storage location release metadata for addressable memory space, optionally providing to a host system information upon which maintenance decisions or related scheduling can be based. The storage drive can also provide buffering support for accommodating receipt of out-of-order writes and unentanglement and performance of out of order writes, with buffering resources being configurable according to any one of a number of parameters. The disclosed storage drive facilitates reduced error rates and lower request traffic in a manner consistent with newer memory standards that mandate that writes to logical addresses be sequential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.