Data clearing method and device for storage system

A storage system and data clearing technology, applied in the direction of memory address/allocation/relocation, input/output to record carrier, etc., to achieve the effect of enhancing flexibility and convenience

Active Publication Date: 2018-02-23
XFUSION DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the user has this demand, the method of clearing dirty data provided by the above-mentioned prior art obviously cannot satisfy

Method used

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  • Data clearing method and device for storage system
  • Data clearing method and device for storage system
  • Data clearing method and device for storage system

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0029] Please refer to the attached figure 1 , is a schematic flow chart of a data clearing method for a storage system provided by an embodiment of the present invention, and its execution subject may be a storage system (including a solid-state storage hard disk and a magnetic hard disk) or a functional module / unit on a storage system, mainly including steps S101 and S102 and step S103:

[0030] S101. Receive a write operation instruction.

[0031] Since the storage system is usually a subsystem or d...

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Abstract

Embodiments of the present invention provide embodiments of the present invention to provide a method and device for clearing data in a storage system, so as to perform data clearing operations according to user requirements. The method includes: receiving a write operation instruction; judging whether the historical version data needs to be cleared according to whether the write operation instruction carries information indicating to clear the historical version data on the storage system; if it is determined that the historical version data needs to be cleared If clearing is performed, the historical version data on the storage system is cleared, so that the historical version data on the storage system cannot be recovered. The method provided by the present invention only clears the historical version data specified by the user and does not affect the current user data. It can ensure the timely clearing of the historical version data, eliminate potential safety hazards, and improve the security of the storage system. The requirement that the user only clears the specified dirty data without clearing other valid data enhances the flexibility and convenience of the storage system.

Description

technical field [0001] The invention relates to the field of data storage, in particular to a data clearing method and device for a storage system. Background technique [0002] A solid state storage (Solid State Storage, SSS) system, for example, a solid state storage hard disk (Solid State Device / Solid State Drive, SSD), refers to a storage system composed of a control unit and a solid state storage unit (usually a NAND Flash chip). Different from the traditional disk reading and writing process, the solid-state storage system can perform multiple read operations after writing data, but before performing the write operation again, the location of the stored data must be erased first, and then new data can be written. [0003] Most of the storage media of solid-state storage systems are NAND Flash. In NAND Flash, a page is the smallest unit for reading and writing, and a block is the smallest unit for erasing. A block is composed of multiple pages. . Therefore, when a sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/06G06F3/06
Inventor 石佳张恒梁和晓艳
Owner XFUSION DIGITAL TECH CO LTD
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