If the customer has high requirements on the availability of the management system and requires that the normal use of the system is not affected by a single point of failure of the hardware, the NetEco management system can provide a high-availability solution of dual-system backup. In the dual-computer solution, what hardware resources are required by NetEco?

If the customer has high requirements on the availability of the management system and requires that the normal use of the system is not affected by a single point of failure of the hardware, the NetEco management system can provide a high-availability solution of dual-system backup. In the dual-computer solution, what hardware resources are required by NetEco?
A . 2 servers + 1 disk array + 1 switch
B . 2 servers + 2 disk arrays + 3 switches
C . 1 server + 1 t-disk array + 2 switches
D . None of the above is true

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Answer: B