Data transmission method of network disaster-tolerant system
A data transmission method and network technology, which is applied in the field of data disaster recovery, can solve the problems of increasing the data transmission volume of the active and standby nodes, increasing the service duration of the main node, and the unavailability of standby data disaster recovery data, so as to reduce the cost of full-disk replication Probability, data integrity performance guarantee, effect of reducing data transmission volume
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[0048] In order to have a clearer understanding of the technical features, objectives and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0049] The disaster recovery system includes at least two nodes. Generally, the source node that can be replicated is called the primary node (also called the primary node), and the destination node (one or more) is called the backup node (also called the secondary node). . Generally, the disk device on the primary node is readable and writable, but the disk device on the standby node is not accessible until the standby node becomes the primary node. The switch between the active and standby roles of a node is usually realized automatically by the corresponding cluster software, which is not repeated here.
[0050] In the present invention, each node stores metadata information related to data transmission with other nodes, and the ...
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