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Data storage system, data storage method and PCM bridge

A data storage system and data storage technology, applied in the direction of memory address/allocation/relocation, input/output to the record carrier, etc., can solve the problem of file system load waste, increase system life, speed up data access, and improve operation The effect of efficiency

Active Publication Date: 2014-06-04
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This embodiment provides a data storage system, a data storage method, and a PCM bridge, which are used to solve the problem of waste of file system load caused by reading and writing NAND Flash in the prior art

Method used

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  • Data storage system, data storage method and PCM bridge
  • Data storage system, data storage method and PCM bridge
  • Data storage system, data storage method and PCM bridge

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Embodiment Construction

[0058] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0059] In a traditional DRAM&Flash / HDD-based storage system, the memory is volatile at high speed, and the storage is relatively low-speed non-volatile. There is an insurmountable gap between the two. PCM has read or write latency close to DRAM and excellent graded Scale capability, indicating its potential for capacity expansion, and also has Byt...

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Abstract

An embodiment of the invention provides a data storage system, a data storage method and a PCM bridge. The system comprises a processor, a memory controller, the phase change memory PCM bridge and a phase change memory PCM. The processor is connected with the PCM bridge through the memory controller. The PCM bridge is connected with the PCM. Small nonvolatile data are stored in the PCM. The PCM bridge is used for receiving first operation signals which are used for reading or writing small data and are from the CPU. The PCM bridge is also used for converting the first operation signals into second operation signals capable of being used for reading or writing the PCM so as to read the small data in the PCM or write small data in the PCM through the second operation signals. According to the data storage system, the data storage method and the PCM bridge, the PCM can be used for reading or writing in a bitwise mode, so that operation efficiency is improved, system service life is prolonged, and the capacity of data access is quickened.

Description

technical field [0001] The embodiments of the present invention relate to data storage technologies, and in particular to a data storage system, a data storage method and a PCM bridge. Background technique [0002] In the storage architecture composed of traditional NAND flash memory NAND Flash, when data is written into NAND Flash in the storage system, NAND Flash needs to be read into Dynamic Random Access Memory (Dynamic Random Access Memory, hereinafter referred to as: DRAM), and modified in DRAM , and then write back to the process in NAND Flash; in the writing process, the metadata Metadata and the user data Userdata are written into the NAND Flash together, and the metadata Metadata is usually stored in the NANDMetadata block, because the size of the metadata Metadata is generally smaller than that based on NAND The minimum block size of the file system stored in Flash and the frequent updates, on the one hand, cause additional management overhead of NAND Flash, and o...

Claims

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Application Information

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IPC IPC(8): G06F12/02G06F3/06
Inventor 许焰李挺
Owner HUAWEI TECH CO LTD
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