A storage system, a storage management device, a storage device, a mixed storage device and a storage management method

A storage system and storage management technology, applied in the field of storage systems and storage management devices, can solve problems such as reducing SSD performance and shortening SSD life

Active Publication Date: 2017-01-11
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The write amplification of SSD will reduce the performance of SSD and shorten the life of SSD

Method used

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  • A storage system, a storage management device, a storage device, a mixed storage device and a storage management method
  • A storage system, a storage management device, a storage device, a mixed storage device and a storage management method
  • A storage system, a storage management device, a storage device, a mixed storage device and a storage management method

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Embodiment Construction

[0133] 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.

[0134] The memory in the embodiment of the present invention includes a plurality of physical blocks, new data can only be written by erasing the original data, and data is written in units of pages, and data is erased in units of physical blocks. The representative of this kind of memory It is an SSD. In the following embodiments, an SSD is used as an example for illustration.

[0135] Such as figure 1 , is an architecture diagram of a system in which SSD is used...

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Abstract

The invention provides a storage system, a storage management device, a storage device, a mixed storage device and a storage management method. The storage system comprises a storage device and a management device; the management device receives data writing requests, determines the data types of to-be-written data pages, appoints different logic blocks for to-be-written data pages of different data types, and sends a data writing command to the storage device, wherein the data writing command carries to-be-written data pages corresponding to at least one appointed logic block; the storage device is used for receiving the data writing command, and writes the to-be-written data pages corresponding to the at least one appointed logic block into a physical block corresponding to the at least one appointed logic block according to the data writing command, wherein to-be-written data pages corresponding to the same logic block are written into one physical block. According to the invention, writing amplification generated during erasing of physical blocks of SSDs can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of storage, in particular to a storage system, a storage management device, a memory, a hybrid storage device and a storage management method. Background technique [0002] Solid state memory (Solid state disk, SSD) has the advantages of high performance, low latency, low power consumption, strong environmental adaptability, etc., and the cost is also decreasing, so it is more and more widely used at present, mainly used as hard disk drive, HDD) cache. [0003] Since SSD cannot be overwritten in situ like HDD, but the original data needs to be erased before new data can be written, and the unit of reading and writing of SSD is page, but the unit of erasing is physical block. When the data in the SSD is updated, it is necessary to write the updated data into another free location, and set the original data as invalid, and then select the physical block with more invalid data to erase when the SSD is full. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/02G06F12/08
CPCG06F12/0246G06F2212/1024G06F2212/222G06F2212/7201G06F2212/7205G06F3/064G06F12/06G06F12/0646G11C8/06
Inventor 张子刚熊劲蒋德钧
Owner HUAWEI TECH CO LTD
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