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Hybrid storage system and hot spot data block migration method

A hot data and mixed storage technology, applied in the direction of memory address/allocation/relocation, input/output to record carrier, etc., can solve problems such as high cost, slow data access speed, and restrictions on the widespread use of SSDs, so as to reduce the overall Cost, cost-effective, and the effect of improving overall access performance

Inactive Publication Date: 2013-07-03
BEIJING FASTWEB TECH
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AI Technical Summary

Problems solved by technology

Mechanical hard drives have the advantages of low cost and large capacity; but the disadvantages are: slow data access speed
[0003] Aiming at the disadvantage of slow data access speed of mechanical hard disk, at present, SSD (Solid State Disk, solid state drive) as a kind of hard disk with fast data access speed has been gradually applied in computers
Although the data access speed of SSD is faster, compared with mechanical hard disk, it has the disadvantages of high cost and small capacity, which limits the widespread use of SSD

Method used

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  • Hybrid storage system and hot spot data block migration method

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Embodiment Construction

[0050] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0051] An embodiment of the present invention provides a hybrid storage system, including: at least one solid state disk SSD, at least one mechanical hard disk, and a control module; the control module is used to migrate hot data blocks in the mechanical hard disk to the SSD, and , migrating the non-hot data blocks in the SSD to the mechanical hard disk, wherein, there are H data blocks in the hybrid storage system, and the H data blocks are arranged according to the frequency of access from high to low, The hotspot data block is a data block whose access frequency is at the top M, and the non-hotspot data block is a data block whose access frequency is at the bottom N, wherein, H≥M, H≥N.

[0052] Wherein, the SSD involved in the present invention can be based on flash storage media such as NAND or NOR, has high random read and sequential read and write...

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Abstract

The invention provides a hybrid storage system which comprises at least one solid-state hard disc SSD (solid state drive), at least one mechanical hard disc and a control module, wherein the control module is used for migrating hot spot data blocks in the mechanical hard disc into the SSD, and migrating the non-hot spot data blocks in the SSD into the mechanical hard disc, the hot spot data blocks are data blocks of which the visited frequency is higher than that of other data blocks, and the non hot spot data blocks are data blocks of which the visited frequency is lower than that of others. According to the hybrid storage system and the hot spot data block migration method, provided by the invention, the utilization ratio of the SSD and the performance of the hybrid storage system are effectively enhanced, and meanwhile, the cost of the hybrid storage system is lowered.

Description

technical field [0001] The invention belongs to the technical field of computer storage, and in particular relates to a hybrid storage system and a method for migrating hot data blocks. Background technique [0002] As a traditional ordinary hard disk, mechanical hard disk is mainly composed of several parts: disk, magnetic head, disk shaft and control motor, head controller, data converter and interface. Mechanical hard drives have the advantages of low cost and large capacity; but the disadvantages are: slow data access. [0003] Aiming at the disadvantage of the slow data access speed of the mechanical hard disk, at present, SSD (Solid State Disk, solid state disk), as a hard disk with fast data access speed, has been gradually applied in computers. Although the data access speed of SSD is faster, compared with mechanical hard disk, it has the disadvantages of high cost and small capacity, which limits the widespread use of SSD. [0004] Therefore, how to design a stora...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06F12/02
Inventor 易乐天郝冲刘再德
Owner BEIJING FASTWEB TECH
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