Solid-state drive data security enhancement
US9501242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2015 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Mar 7, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2143
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present disclosure provide a method and apparatus for storage control. The method comprises: in response to having received a data deletion command on sensitive data, marking a storage medium page where the sensitive data is located as invalid, and putting a storage medium block where the storage medium page is located in a garbage collection queue, wherein the storage medium block is a minimum unit of storage medium erasure in a SSD; determining a secure deletion time corresponding to the sensitive data; in response to a remaining time to a next garbage collection being longer than the secure deletion time corresponding to the sensitive data, setting a value of the remaining time as the secure deletion time; and triggering a garbage collection according to the remaining time. Using the solution according to the embodiment of the present disclosure, the security of the SSD can be enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.