Method and system for recycling solid state disk junk and solid state disk controller

A solid-state hard disk and controller technology, applied in the storage field, can solve the problems of low garbage collection efficiency, capitalization and performance overhead, etc., to achieve the effect of improving garbage collection efficiency and reducing performance overhead

Active Publication Date: 2014-07-02
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When this solution is used for garbage collection of solid-state drives, all valid data in the stripe needs to be

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  • Method and system for recycling solid state disk junk and solid state disk controller
  • Method and system for recycling solid state disk junk and solid state disk controller
  • Method and system for recycling solid state disk junk and solid state disk controller

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Embodiment Construction

[0041]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. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0042] Solid-state hard disk is a kind of storage device constructed by Flash chip, solid-state hard disk controller is also a chip, such as FPGA, ASIC, etc., control the read and write access to the described solid-state hard disk by programming the chip in the solid-state hard disk controller or various operations. The solid-state hard disk controller and the Flash chip constituting the solid-state hard disk can be arranged on a PCB board, that is, present in the ...

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Abstract

The invention relates to the technical field of storage and discloses a method and system for recycling solid state disk junk and a solid state disk controller. The method includes the following steps that an order for recycling junk on a solid state disk is received; junk recycling strips needing to perform junk recycling are determined from multiple strips included by the solid state disk according to the order; junk recycling data blocks needing to perform junk recycling are determined from multiple data blocks which are included in the junk recycling strips; effective data in the junk recycling data blocks are written into data blocks of other strips, and the junk recycling data blocks are erased to obtain blank data blocks. The blank data blocks in the junk recycling strips are built to form a first logic sub strip, and strip management is performed on the first logic sub strip. According to the scheme, the recycling efficiency of the solid state disk junk can be improved, and performance expenditure is reduced.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a solid state disk garbage collection method, system and solid state disk controller. Background technique [0002] RAID (Redundant Array of Independent Disks, Redundant Array of Independent Disks) algorithm is a high-performance, high-reliability storage technology, by combining a series of individual disks in different ways, it provides logical storage for application terminals or terminal clusters. disk. Among them, the advantages of using RAID include: expanding disk capacity, improving disk read and write performance and data security. Specifically, the RAID technology has been widely used in various occasions of data storage, and commonly used RAID technologies include RAID0, RAID1, RAID5, RAID6, RAID10, and the like. [0003] Currently, in solid-state hard disks that use RAID algorithms to process data, the garbage collection mechanism mainly uses data relocation techno...

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Application Information

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IPC IPC(8): G06F12/02
CPCG06F12/0253G06F2212/1016G06F2212/214G06F2212/262
Inventor 陈建辉李挺
Owner HUAWEI TECH CO LTD
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