Which of the following statements about multi-plane system design of the Huawei Oceanstor unified storage system is correct?

Which of the following statements about multi-plane system design of the Huawei Oceanstor unified storage system is correct?
A . The service plane uses GE channels for data transmission.
B . The service plane connects the host IO channel, disk IO channel and GE switching channel.
C . Plane redundancy between each other, when the business plane fails, allowing the use of control plane transmission services.
D . When the GE switch channel fails, you can use the PCIe switch channel as a backup data transmission channel.

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Answer: D