The advantages and disadvantages of the disaster recovery technology of the host layer, network layer...

For host layer disaster recovery, host layer replication will occupy certain host resources, which will affect the application system

The initial construction cost of network layer disaster recovery is relatively low, and many manufacturers can provide solutions

Array layer disaster recovery, the arrays at both ends must be products of the same manufacturer, unable to solve the heterogeneous problem

Host layer disaster recovery is implemented on the host side, without considering the compatibility between the underlying devices