Data Center Hybrid Disk Array and Dynamic Data Migration Strategy thereof

A disk array and data center technology, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc., can solve the problems of centralization, centralization of write requests, access characteristic storage data, etc., to achieve low cost and high performance and cost effects

Inactive Publication Date: 2019-01-04
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the hybrid disk arrays (such as RAID5 and RAID6) in the data center do not store data according to the access characteristics of the load. On the one hand, it may cause a large number of random requests to be concentrated on the mechanical hard disk. On the other hand, i

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Data Center Hybrid Disk Array and Dynamic Data Migration Strategy thereof
  • Data Center Hybrid Disk Array and Dynamic Data Migration Strategy thereof
  • Data Center Hybrid Disk Array and Dynamic Data Migration Strategy thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Such as figure 1 As shown, a data center hybrid disk array, including:

[0029] A large number of mechanical hard disks are used to store data blocks whose sequential access is mainly written;

[0030] A small number of solid-state drives are used to store random access data blocks that are mainly read;

[0031] The array controller maintains the mapping between logical blocks and physical blocks, and maps logical blocks to physical blocks of solid-state hard disks or mechanical hard disks; maintains a transfer status value for each data block, and migrates storage blocks to solid-state storage blocks according to the status value The hard disk and the storage block is mainly read by random access, and the storage block is migrated to the mechanical hard disk and the storage block is sequentially accessed by writing; by maintaining the hash list of the accessed data block, record the location of the data block The device number, logical block address, access frequency...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a data center hybrid disk array, comprising: a mechanical hard disk used for storing sequential access to write-based data blocks; a solid-state disk for storing data blocks which are randomly accessed and mainly read; an array controller maintaining a mapping between a logical block and a physical block, and mapping the logical block to a physical block of a solid state hard disk or a mechanical hard disk; by maintaining a hash-linked list of accessed data blocks, the device number, logical block address, access frequency, read-write ratio, and average request size ofthe data block are recorded, and the transition status value being calculated. The invention also discloses a data dynamic migration strategy of a data center hybrid disk array. The hybrid disk arrayof the invention utilizes the mechanical hard disk with larger capacity to store most of the data, and utilizes the solid-state hard disk with smaller capacity to store the data accessed randomly bythe hot spots, so as to meet the requirements of large capacity, high performance and low cost of the data center storage system.

Description

technical field [0001] The invention relates to the technical field of computer storage, in particular to a data center hybrid disk array and a data dynamic migration strategy thereof. Background technique [0002] With the development of electronic information technology, solid-state hard drives based on NAND flash memory technology are gradually applied to storage systems. Solid-state drives eliminate the rotational characteristics of mechanical hard drives, which makes the access performance of solid-state drives tens or even hundreds of times higher than that of mechanical hard drives. Another important characteristic of solid-state drives is the asymmetry of reading and writing, and the performance of reading is higher than that of writing. In addition, frequent write operations will trigger expensive garbage collection operations, which will affect the service life of SSDs. [0003] Since solid-state drives cannot compete with traditional mechanical hard drives in te...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F3/06
CPCG06F3/0616G06F3/0647G06F3/0685
Inventor 陈金忠耿锐
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap