The advantages and disadvantages of the disaster recovery technology of the host layer, network layer and array layer, the following statement is correct? (Multiple choice)
A.
For host layer disaster recovery, host layer replication will occupy certain host resources, which will affect the application system
B.
The initial construction cost of network layer disaster recovery is relatively low, and many manufacturers can provide solutions
C.
Array layer disaster recovery, the arrays at both ends must be products of the same manufacturer, unable to solve the heterogeneous problem
D.
Host layer disaster recovery is implemented on the host side, without considering the compatibility between the underlying devices
Chosen Answer:
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