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Data migration method and device

A data and data unit technology, applied in the computer field, can solve problems such as poor data migration effect, achieve the effect of reasonable migration strategy and improved read and write performance

Active Publication Date: 2021-12-03
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the traditional data migration methods only migrate data according to the number of calls, and the effect of data migration is not good.

Method used

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Embodiment Construction

[0038] A tiered storage system can include multiple storage pools. The storage media constituting the same storage pool are the same, and the storage media corresponding to different storage pools are different. Due to different storage media, the rate of reading and writing data from the storage pool is also different. At present, a storage pool formed by storage media with a faster read / write rate may be called a high-level storage pool, and a storage pool formed by a storage medium with a slower read / write rate may be called a low-level storage pool. In this way, cold data can be stored in low-level storage pools and hot data can be stored in high-level storage pools.

[0039]Changes between cold and hot data can occur as computers or servers process the data. Some cold data may become hot data as the computer or server is called, and data may become cold data over time. For this reason, the hierarchical storage system can monitor the reading and writing of data. For ex...

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Abstract

The embodiment of the invention provides a data migration method and device. In the process of migrating a first data unit, the performance statistical parameters of the first data unit in a plurality of migration periods can be firstly obtained. Then, the migration index of the first data unit may be calculated according to the performance statistical parameters of the first data unit in the plurality of migration periods. Specifically, when the migration index is calculated, the closer a migration period is to the current moment, the greater the influence of the performance statistical parameters of the migration period on the migration index is. Therefore, the influence of the performance statistical parameters in different time periods on the migration index is different, and the timeliness of the data is fully considered, so that the migration strategy is more reasonable, and the overall read-write performance of a storage system is improved.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a data migration method and device. Background technique [0002] In the era of big data, hierarchical storage systems have been widely used. In a hierarchical storage system, data with a higher utilization rate can be stored in a storage device with a faster read / write speed, and data with a lower utilization rate can be stored in a storage device with a slower read / write speed. For example, on a three-tier storage system including flash memory (Flash), solid state drive (Solid State Drive, SSD) and hard disk drive (Hard Disk Drive, HDD), the read and write speed of FLASH is higher than that of SSD, while SSD The read and write speed of HDD is higher than that of HDD. Based on this, data blocks with high utilization can be stored in Flash, data blocks with medium utilization can be stored in SSD, and data blocks with low utilization can be stored in HDD. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0647G06F3/061G06F3/0683Y02D10/00
Inventor 张孙旻
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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