Disaster recovery system, method and network device

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 ...

AI Technical Summary

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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