Method for establishing mixed storage array

Abstract

The invention discloses a method for establishing a mixed storage array. The method comprises the following steps: S1, dividing a mixed array into three zones, namely a zone-I [HDD (hard disk drive) storage zone], a zone-II [SSD (solid state disk) random small reading storage zone] and a zone-III (SSD random small writing storage zone); S2, analyzing a data historical access behavior by utilizing parameters, namely request size, frequency and seed distance; S3, dividing data into three types according to stripes: S-I (cold data and sequential reading and writing type hot data), S-II (random small reading type hot data) and S-III (random small writing type hot data); S4, relocating the S-I type data to the zone-I, relocating the S-II type data to the zone-II and relocating the S-III type data to the zone-III, so that the data can be distributed reasonably while the reliability is guaranteed, and the performance of the mixed storage array is improved.

Description

technical field [0001] The invention belongs to the technical field of computer storage, and more specifically relates to a method for constructing a hybrid storage array. Background technique [0002] With the development of solid-state disk technology, it has brought a lot of influence to the application and research of the whole storage field. Compared with mechanical disks, solid-state disks have better random access performance because they do not require the seek and rotation positioning time of the magnetic head, thus providing the possibility to fundamentally solve the problem of low random access performance of traditional disks. In addition, as an electronic device, a solid state disk also has the advantages of low power consumption, small size, light weight and shock resistance. However, due to reasons such as price and capacity, it is still impossible for solid-state drives to completely replace disks in the field of storage applications for a long time in the f...

AI Technical Summary

Problems solved by technology

By placing sequential read and write request data in zone-I (an HDD storage area), hot random small read and small write requests are placed in zone-II (SSD random small read storage area) and zone-III (SSD random small read storage area) Storage area), make full use of the high sequential read and write performance of HDD and the random read and write performance of SSD to improve the I / O performance of the hybrid storage array, thereby solving the existing technical problems that have certain limitations in improving the performance of the hybrid storage array

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