Method and device for managing double active storage arrays

A technology of storage array and memory, which is applied in the field of storage, and can solve problems such as host interruption of business, dual-active array split-brain, and failure of two active-active arrays to provide access, etc.

Active Publication Date: 2017-06-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] However, in the existing technology, the arbitration scheme has very high requirements on the reliability of the arbitration server. Once the arbitration server fails or the link between the arbitration server and the two storages fails, a split-brain of the active-active array will cause two Even if the active-active array fails to submit the arbitration, it cannot provide access, causing the host to interrupt the service

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  • Method and device for managing double active storage arrays
  • Method and device for managing double active storage arrays
  • Method and device for managing double active storage arrays

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Embodiment Construction

[0028] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0029] When the embodiment of the present invention is applied to a storage system, the storage system includes two storage arrays and a host, and both storage arrays can accept data sent by the host. The two storage arrays are also connected to each other, so that when one storage array receives host data, the other storage array backs up the host data received by the storage array receiving host data. When the link between the storage array receiving host data and the host fails, the backup storage array can replace the storage array currently receiving host data and continue to receive data sent by the host. A split brain occurs when the link between two storage arrays is broken.

[0030] It should be noted that, in the embodiment of the present invention, the host may be a cluster, and the cluster includes multipl...

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Abstract

The invention relates to a method and device for managing double active storage arrays. The method comprises the steps of counting the data amount received by a first storage array from a host; receiving the data amount sent by a second storage array of the data amount received by a second storage array from a host; making sure the data amount received by the first storage array from the host is less than the data amount received by the second storage array from the host; when making sure the link between the first storage array and the second storage array fails, sending an arbitrary request to an arbitrary server after delaying for a while, connecting the arbitrary server with the first storage array and the second storage array respectively, and receiving the arbitrary result sent by the arbitrary server; when making sure the link between the second storage array and the arbitrary server is disconnected, making sure the storage array which receives data through storage arrays; when in split-brain condition, storage arrays assigning the storage array which receives larger amount of data from the host to receive data from the host.

Description

technical field [0001] The present invention relates to the field of memory technology, in particular to a method and device for managing a dual-active storage array. Background technique [0002] With the advancement of digitalization in various industries, data has gradually become the core of the operations of enterprises and institutions. Users have higher and higher requirements for the stability of storage systems that carry data, including storage data reliability and business continuity. More and more enterprises centralize applications, data, and systems. at risk. Although many storage manufacturers can provide users with highly stable storage devices, they still cannot prevent natural disasters and other emergencies. [0003] When a catastrophic emergency occurs, how to ensure the onlineness of the core business of the enterprise, that is, the uninterrupted operation of the core business 7*24 hours, has become the primary concern of the enterprise. Unplanned dow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0614G06F3/0683
Inventor 王秀武刘辉花金磊
Owner HUAWEI TECH CO LTD
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