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Synchronization method of information of double controllers in disk array and disk array system

A dual-controller, information synchronization technology, applied to the synchronization of dual-controller information in disk arrays and the field of disk array systems, can solve the problems of large system load and high controller CPU usage, improve performance and reduce CPU usage efficiency, saving system resources

Active Publication Date: 2010-07-14
如东文园投资开发有限公司
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Problems solved by technology

[0016] In consideration of the problems in the dual-controller information synchronization process in the related art, which lead to high CPU usage of the controllers and heavy system load due to the complexity of the information interaction process between the controllers, the present invention is made. For this reason, the main purpose of the present invention is to provide A method for synchronizing information of dual controllers in a disk array, and a disk array system

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  • Synchronization method of information of double controllers in disk array and disk array system

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[0039] Functional Overview

[0040] In the process of information synchronization between dual controllers in the related art, due to the complexity of the information interaction process between the controllers, the CPU usage of the controllers is high and the system load is heavy. However, in the current storage project development process, most of the dual-controller For the disk array products of the structure, the synchronization of dual controllers has always been a very critical issue. How to realize the synchronization of dual controllers on the basis of reducing the CPU usage of the controllers, lightening the system burden, and improving the performance of the entire disk array product is very important. The present invention just proposes to increase a system cache area (can be referred to as SYS_MEM) area model on the backplane of the dual controller in the dual-controller disk array system structure, this area model is arranged between the SAS channels, is used to ...

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Abstract

The invention discloses a synchronization method of the information of double controllers in a disk array and a disk array system, wherein the method comprises the following steps of: transmitting respective information to a system cache region by a first controller and a second controller; and comparing the information from the first controller with the information from the second controller by the system cache region and carrying out the information synchronization of the first controller and the second controller. The system cache region is arranged on a back panel of the double controllers, and the information comparison and the updating of the double controllers are realized through the system cache region, thereby solving the problems of high CPU (central processing unit) occupancy rate and poor system property caused by complicated message interaction processes of inquiring, replying, and the like required by the synchronization of two controllers in a double-controller structure in a correlation technique. The invention only needs to directly upload the information and carry out the information updating of the controllers if necessary, can save system resources, reduces the CPU occupancy rate of the controllers and improves the property of the whole system.

Description

technical field [0001] The present invention relates to, and particularly relates to, a method for synchronizing information of dual controllers in a disk array, and a disk array system. Background technique [0002] Disk arrays are usually used in currently used storage products. A disk array can combine several disk drives into a whole according to certain requirements, and the entire disk array can usually be managed by a controller. [0003] The controller is the core module of the disk array and also the control unit between the host and the disk. Usually, the controller is configured with a processor specially optimized for input / output (Input / Output, referred to as I / O) and a certain amount of high-speed cache memory (which may be called cache). The central processing unit (Central Processing Unit, referred to as CPU) and the cache on the controller can jointly realize the operation of the I / O request from the host system, and realize the redundant array of independ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F11/10G06F12/08G06F12/0868
Inventor 刘婷
Owner 如东文园投资开发有限公司
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