Data migration method, apparatus and system

A technology of data and data blocks, applied in the field of data migration

Active Publication Date: 2016-07-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a data migration method, device and system to reduce the problem of data block error migration and repeated migration caused by load balancing in the prior art

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  • Data migration method, apparatus and system
  • Data migration method, apparatus and system
  • Data migration method, apparatus and system

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Embodiment Construction

[0100] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0101] The embodiment of the present invention provides a method for data migration, such as figure 2 As shown, the method is applied to a migration control device in a storage area network (StorageAreaNetwork, referred to as SAN) system, the SAN system includes a host, a migration control device and at least two controllers, and each controller includes a storage space, The migration control device is respectively connected to the host and the at le...

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Abstract

Embodiments of the invention provide a data migration method, apparatus and system, which relate to the technical field of computer applications and are used for reducing the problems of error migration and repeated migration of data blocks caused during load balancing in the prior art. The method comprises the steps of in a sampling period, obtaining the frequency of accessing data blocks in a storage space of each controller; according to the frequency of accessing the data blocks in the storage space of each controller, calculating the popularity of each controller in the current sampling period, wherein the popularity of each controller is equal to a weighted operation value obtained by performing weighted operation on the frequency of accessing the data blocks in the storage space of the controller in the sampling period; determining whether the popularity of each controller is greater than a first threshold or not; and sending a first migration instruction to a first controller, and sending a second migration instruction to a second controller. The method, apparatus and system can be used for data migration.

Description

technical field [0001] The present invention relates to the technical field of computer applications, and in particular, to a method, device and system for data migration. Background technique [0002] A storage area network (SAN for short) is a network that uses a high-speed network or sub-network to connect storage devices and servers. SAN separates storage devices from the network and becomes the peer of the computer network. [0003] Generally speaking, a SAN consists of a communication structure responsible for network connections, a management layer responsible for organizing connections, storage components, and computer systems. The typical architecture of SAN equipment can refer to figure 1 . Among them, the host, the controller and the centralized cache (referred to as centralized CAHCE) are in one-to-one correspondence, and the centralized CACHE is divided into more than one area, each area is called a logical unit number (LogicUnitNumber, referred to as Lun), W...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/02
Inventor 徐晓忻张羽雷舒莹
Owner HUAWEI TECH CO LTD
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