Storage system with host-directed error scanning of solid-state storage devices
US10956245B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2017 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Nov 1, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/106
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage system in one embodiment comprises a host processor, and a solid-state storage device coupled to the host processor and comprising a non-volatile memory and a storage controller. The host processor is configured to initiate an error scanning operation on a designated portion of the non-volatile memory by directing at least one read command to the storage controller. The read command is configured to indicate to the storage controller that data read from the non-volatile memory responsive to the read command is not to be returned to the host processor. For example, the read command may illustratively comprise a Scatter Gather List (SGL) bit bucket descriptor indicating that the data read from the non-volatile memory responsive to the read command is to be discarded rather than returned to the host processor. The storage controller records any detected errors in a media error log and notifies the host processor of such errors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.