Solid-state drive data security enhancement
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United States of America Patent
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Nov 22, 2016
Grant Date -
Jul 30, 2015
app pub date -
Jan 27, 2015
filing date -
Jan 28, 2014
priority date (Note) -
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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.
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