Which of the following descriptions about the high reliability of Huawei OceanStor Dorado all-flash storage series is wrong?

Which of the following descriptions about the high reliability of Huawei OceanStor Dorado all-flash storage series is wrong?
A . RAID2.0+ underlying virtualization
B . All SSD hard drives, with high IOPS and low latency
C . Advanced data protection technologies, such as HyperSnap, HyperReplication, etc.
D . Component failure protection, dual redundancy design and A/A working mode

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Answer: B