Solid state disc and power failure protection method and system thereof

A technology of solid-state hard disk and power-down protection, which is applied in the direction of response error generation, redundant data error detection in operation, etc., can solve the problem of NandFlash data destruction, etc., and achieve the effect of solving data destruction

Inactive Publication Date: 2012-07-18
RAMAXEL TECH SHENZHEN
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Problems solved by technology

[0007] For above-mentioned defect, the object of the present invention is to provide a kind of solid-state hard disk and its power-down protection method, system, it can not increase hardware design cost and complexity on the basis, solves NAND due to abnormal power-down through special-purpose software technology. The problem that the data of the coupling page in Flash is destroyed

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  • Solid state disc and power failure protection method and system thereof
  • Solid state disc and power failure protection method and system thereof
  • Solid state disc and power failure protection method and system thereof

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Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0042] like figure 1 As shown, a solid state disk power-down protection system 100 of the present invention is used for power-down protection of the solid state hard disk. The system can be a software unit, a hardware unit or a combination of software and hardware built in the solid state hard disk. The system 100 mainly includes: an adaptive data backup management module 10 , a main channel flash memory management module 20 and a main controller 30 .

[0043]The adaptive data backup management module 10 is used for performing adaptive data backup calculation and judging whether to perform data ba...

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Abstract

The invention is applied to the fields of solid state discs and information storage and provides a solid state disc and a power failure protection method and a system thereof. The method comprises the steps of performing self-adaption data backup computation and judging whether to proceed data backup when data is written into the solid state disc; if backup is required, backuping the data to a single level cell (SLC) type storage area converted from a multi level cell (MLC) type storage area, then writing the data into the MLC type storage area, otherwise directly writing the data into the MLC type storage area; and when the solid state disc is powered on, the data is recovered according to data backup information. Therefore, the solid state disc and the power failure protection method and the system of the solid state disc can solve the problem of data damage of coupling pages in Nand Flash caused by abnormal power failure by means of a self-adaption backup technology on the basis that hardware design cost and complexity are not increased.

Description

technical field [0001] The invention relates to the fields of solid-state hard drives and information storage, in particular to a solid-state hard drive and a power-down protection method and system thereof. Background technique [0002] The Nand Flash chips used in existing solid-state drives are mainly MLC (Multi-Level Cell, multi-layer unit) Nand Flash chips, and for most MLC Nand Flash chips, there are two notable characteristics: 1. In the same unit The two bits of are allocated in two different pages, so the two pages are strongly coupled, if the high-order page is destroyed, the data in the low-order page will also be destroyed. 2. MLC type Nand Flash can be converted into SLC (Single Layer Cell, single layer unit) type Nand Flash through special technology and software management technology. [0003] At present, SSDs use multiple Nand Flash controllers as multiple channels in parallel to achieve high data throughput, and there are a large number of Nand Flash read a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14
Inventor 方浩俊
Owner RAMAXEL TECH SHENZHEN
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