Disaster recovery system, method and network device

A technology of network equipment and disaster recovery, applied in the field of network communication, can solve the problems of network complexity, high investment cost, waste of resources, etc., and achieve the effect of improving flexibility, reducing the degree of damage, and reducing the cost of disaster recovery

Active Publication Date: 2007-08-29
HUAWEI TECH CO LTD
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Problems solved by technology

[0010] From the description of method 2, it can be seen that the hardware of the production center and the disaster recovery center are completely mirrored, and a transmission link needs to be established between the disk arrays; and the data replication process is disk-level data replication, therefore, the transmission link needs Guaranteed high transmission bandwidth to ensure the need to replicate data; resulting in high investment costs
Since one production center corresponds to one disaster recovery center, when the production centers in multiple regions need disaster recovery, it is necessary to build a set of 1+1 disaster recovery centers for the production centers in each region, resulting in huge resources waste
From the perspective of network deployment, node expansion of the production center that requires disaster recovery will inevitably lead to network complexity

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Embodiment Construction

[0026] In terms of the implementation process of disaster recovery, disaster recovery can be divided into two parts: data replication and business disaster recovery takeover. The main problems that need to be solved during the data replication process are: how to ensure data consistency, how to minimize data delay and data loss rate. Data replication is the basis of disaster recovery, and data replication can also be called data disaster recovery takeover. The main problem that needs to be solved in the process of business disaster recovery takeover is: how to ensure the smooth switching of the business on the basis of the integrity of the replicated data. Business disaster recovery takeover is the core of disaster recovery.

[0027] In the existing technology, disaster recovery does not distinguish between business and data. That is to say, the existing disaster recovery solution uses the entire disaster recovery system as the basic unit of disaster recovery, that is, when ...

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Abstract

Disaster tolerance system includes multiple applications and disaster tolerance nodes (ADTN), at least a data node, and at least a data disaster tolerance node. An ADTN is corresponding to at least one local operation enable part node (LOEPN) in an outer system, and at least one not LOEPN in an outer system. ADTN provides operation service for corresponding LOEPN, and provides operation disaster tolerance taking over service for corresponding not LOEPN. One data node is corresponding to multiple ADTNs, and one data node is corresponding to at least one data disaster tolerance nodes (DATN). Data node provides data service for corresponding ADTN. When data node current utilized cannot provide data service, DATN provides data disaster tolerance taking over service for ADTN. The invention raises flexibility for configuring disaster tolerance network, reduces redundant constructions of disaster tolerance system so as to reduce cost and raise security of service.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a disaster recovery system, method and network equipment. Background technique [0002] Disaster recovery is an act of improving system availability that is not limited to storage, fault tolerance, and remote data backup. Currently, there are mainly two methods for implementing disaster recovery: [0003] Method 1, local host backup. [0004] When a host in the production center fails and cannot work normally, the backup host in the disaster recovery center can replace the host and continue to work normally. In actual networking, dual-machine and cluster methods are usually used to implement local host backup. [0005] Strictly speaking, Method 1 is not a disaster recovery solution, and the disaster recovery center and the production center are located in the same physical location, which cannot meet the needs of remote disaster recovery. [0006] Method 2, 1+1 ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L1/22H04L12/16
Inventor 杨加龙严雪松吴文魁赵林华李强马晓东
Owner HUAWEI TECH CO LTD
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