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Data storage method

A technology for storing data and data, which is applied in the computer field and can solve problems affecting the read and write performance of RAID5

Inactive Publication Date: 2014-04-16
UNITED INFORMATION TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When using RAID5 to store data, when encountering random writes, because read-modify-write (RMW) or read-rebuild-write (RCW) operations are required, the above operations seriously affect the read and write performance of RAID5.

Method used

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] In the embodiment of the present invention, the randomly written data is combined and stored in the SSD; the data stored in the SSD is written into the RAID group. Use the solid-state hard disk to record the data that needs to be written randomly, and then write it into the RAID group at one time to ensure the read and write performance of RAID5.

[0028] In addition, the data stored in the SSD is stored in the RAID group only when it meets a certain condition, and if the condition is not met, it is temporarily stored in the SSD, thereby avoiding multiple reads of the data in the RAID group. In turn, the read and write performance of RAID5 is fully guaranteed.

[0029] Attached below figure 1 Describe technical scheme of the ...

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Abstract

The invention relates to a data storage method which includes the steps of merging and storing data written at random in an SSD; writing the data written in the SSD into an array RAID set. After the embodiment is applied, the data written at random are recorded through the SSD, the data are then written into the array RAID set at a time, and the reading-writing performance of an RAID5 is further guaranteed.

Description

technical field [0001] The present application relates to the field of computer technology, and more specifically, to a method for storing data. Background technique [0002] Array (RAID) 5 is a storage solution that balances storage performance, data security, and storage cost. RAID5 can be understood as a compromise between RAID0 and RAID1. RAID5 can provide data security for the system, but the degree of protection is lower than that of mirroring and the utilization rate of disk space is higher than that of mirroring. RAID5 has a data reading speed similar to RAID0, except that there is one more parity information, and the speed of writing data is slightly slower than writing to a single disk. At the same time, because multiple data correspond to one parity check information, the disk space utilization rate of RAID5 is higher than that of RAID1, and the storage cost is relatively low. [0003] Use at least 3 hard disks to form a RAID5 disk array. When data is written ...

Claims

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Application Information

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IPC IPC(8): G06F3/06
Inventor 金振成
Owner UNITED INFORMATION TECH
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