Data migration method and device based on mixing memory

A hybrid memory, storage location technology, applied in electrical digital data processing, instruments, input/output to record carriers, etc., can solve the problems of high cost, limited writing life, low capacity, etc. , the effect of reducing loss

Inactive Publication Date: 2012-12-19
国家超级计算深圳中心(深圳云计算中心)
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Problems solved by technology

Solid-state drives have many advantages, but they also have the c

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  • Data migration method and device based on mixing memory
  • Data migration method and device based on mixing memory
  • Data migration method and device based on mixing memory

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Embodiment Construction

[0050] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0051] The hybrid memory of the present invention includes a storage device and a cache device. Storage devices include SSD (solid state disk, solid state drive) and HDD (Hard Disk Drive, hard disk drive). Due to the characteristics of fast reading, low latency, and write loss, SSDs are used to store frequent reads and few writes. data; cache devices include DRAM (Dynamic Random Access Memory, dynamic random access memory) and PCM (phase change memory, phase change memory), PCM capacity is larger, DRAM capacity is smaller, because the read speed of PCM and DRAM However, PCM has the problem of write loss and its life is limited, so PCM is more suitable for storing frequently read data, while frequently write data is mainly stored in DRAM. The present invention combines the advantages of each memory chip in the hybrid ...

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Abstract

The invention discloses a data migration method and a device based on a mixing memory. The data migration method comprises the following steps of: receiving a data write-back command; storing the data to be written back to an SSD (Solid State Disk) of storage equipment when access frequency of the data to be written back in cache equipment is larger than a preset frequency threshold value; storing the data to be written back to an HDD (Hard Disk Drive) of the storage equipment when an access sequence of the data to be written back in the cache equipment is larger than a preset sequence threshold value. The device performs a self-adaptive adjustment to the data stored in the mixing memory, and intelligently migrates a storage position of the data to be written back, so that an SSD loss is reduced to the maximum, an integral service life of the mixing memory is improved, and access delay is reduced, and moreover, resource storage is better utilized and access efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of computer data storage, in particular to a hybrid memory-based data migration method and device. Background technique [0002] In the cloud era, both computing resources and storage resources are concentrated in remote data centers. Except for direct storage services for end users, most of the other storage resources will directly face the servers in the data center. With the large-scale growth of massive data and the extensive and in-depth application of servers, many important applications such as transaction processing systems and weather forecasts are constrained by the performance of the underlying main memory and storage systems. Making full use of the existing storage technology and improving the existing main memory and storage system structure is crucial to improving the overall performance of the system. Solid-state drives have many advantages, but they also have the characteristics of high cost...

Claims

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Application Information

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IPC IPC(8): G06F13/16G06F3/06
Inventor 常艺伟葛雄资徐泽明
Owner 国家超级计算深圳中心(深圳云计算中心)
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