Solid-state disk and data processing method and system thereof

Abstract

The invention discloses a solid-state disk and a data processing method and system thereof. The method comprises the following steps of: detecting an operation, for a first storage area visible to anoperation system, of a user on the solid-state disk; if the operation is a reading / writing operation, keeping data synchronization between the first storage area and a mirror image data storage area of a second storage area invisible to the operation system on the solid-state disk; and if the operation is a deletion operation or a TRIM operation, keeping data synchronization between the first storage area and the mirror image data storage area of the second storage area, and backing up data deleted from the first storage area to a deleted data storage area of the second storage area. Through the second storage area invisible to the operation system, the problem that data cannot be recovered due to malicious data deletion or wrong operation can be avoided, and by utilizing a flash memory controller, data backup and recovery can be carried out on data in the solid-state disk.

Description

technical field [0001] The invention relates to the technical field of solid-state hard disks, in particular to a solid-state hard disk and its data processing method and system. Background technique [0002] At present, solid-state drives on the market mainly provide storage functions for data reading and writing, and do not provide backup and recovery functions for deleted data. Solid-state drive data backup and recovery mainly rely on the management of the upper operating system layer, application program layer or storage system layer and maintenance, although these upper-level management solutions can meet the needs of data backup and recovery under normal circumstances, but because they can be modified or disabled by system users with privileges, in this case, the user maliciously deletes data or the wrong operation causes the deletion of data In some cases, it cannot play an effective detection and data recovery role. In addition, due to the garbage collection algorit...

AI Technical Summary

Problems solved by technology

[0002] At present, solid-state drives on the market mainly provide storage functions for data reading and writing, and do not provide backup and recovery functions for deleted data. Solid-state drive data backup and recovery mainly rely on the management of the upper operating system layer, application program layer or storage system layer and maintenance, although these upper-level management solutions can meet the needs of data backup and recovery under normal circumstances, but because they can be modified or disabled by system users with privileges, in this case, the user maliciously deletes data or the wrong operation causes the deletion of data The situation cannot play an effective detection and data recovery role

In addition, due to the garbage collection algorithm (Garbage Collection) and the TRIM deletion mechanism in the solid-state hard disk, the storage time of the data deleted by the operating system on the physical medium is unpredictable. Traditional data forensics and recovery technologies suitable for mechanical hard disks are being applied Unprecedented challenges in solid state drives

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