Storage device writing method and storage device

Abstract

The embodiment of the invention discloses a storage device write-in method and a storage device. The storage device write-in method includes the steps of firstly, obtaining attributes of data to be written in; secondly, if the data are confirmed as first data according to the attributes of the data to be written in, writing the first data into storage blocks which belong to a first RAID according to the characteristic that an SSD rapidly makes a response, wherein the total storage space size value of the first RAID is equal to the volume of at least one SSD; thirdly, if the data are confirmed as second data according to the attributes of the data to be written in, writing the second data into storage blocks which belong to a second RAID, wherein the total storage space size value of the second RAID is equal to the sum of the volumes of data disks. By means of the storage device write-in method and the storage device, the write-in speed of the storage device can be increased after sectors are improved, and therefore the performance of the storage device is improved, and the service life of the storage device is prolonged.

Description

technical field [0001] Embodiments of the present invention relate to storage technologies, and in particular, to a storage device writing method and a storage device. Background technique [0002] With the continuous development of computer technology and communication technology, there are more and more applications and demands for hard drives. The computer can only read and write the data stored on the traditional hard disk in units of sectors, and the sector size of the traditional hard disk is 512 bytes, that is, 512B. In recent years, hard disk manufacturers are increasing the sector from the traditional 512 bytes to a larger and more efficient 4096 bytes, or 4KB, that is, combining eight traditional 512-byte sectors into one 4KB sector, which is the hard disk It can be read and written in units of 4KB, which can increase the area density and hard disk capacity, and provide more powerful error correction functions. [0003] However, many aspects of the computer still...

AI Technical Summary

Problems solved by technology

Although the computer will not cause any impact when reading data less than 4KB, when the new data that the computer tries to write is less than 4KB, such as when two 512B data are written to the hard disk, it must first read the target location containing the computer write request The data of the entire 4KB sector, and then replace the existing data with the same size data with the new data, such as replacing 2 pieces of 512B old data, and replacing the new 2 pieces of 512B data with the unreplaced 6 pieces of 512B existing data The 4KB of data can only be rewritten into the hard disk by merging it into a 4KB data. Moreover, since most of the existing hard disks are stored in mechanical hard disks (HardDiskDrive, data disks), the response speed of the data disk is slow, resulting in the failure of writing to the hard disk. The speed is very slow, resulting in poor performance of the hard disk. When multiple hard disks are used together, they are used to control the hard disk to ensure that the data can be read and written correctly, which will cause the overall performance of the hard disk to decline.

The overall performance of the hard disk is reduced. At the same time, frequent reading and writing of the hard disk will also cause the head of the hard disk to change continuously, and will also reduce the life of the hard disk.

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