Which of the following descriptions about centralized storage and distributed storage is wrong?

Which of the following descriptions about centralized storage and distributed storage is wrong?
A . Distributed storage system is to disperse and store data on multiple independent devices. When reading data, it needs to read data on multiple devices at the same time, so it will affect the rate of data reading
B. Centralized storage can be divided into SANFINAS storage according to the technical architecture, and SAN storage can be divided into FC-SAN and IP-SAN
C. The biggest feature of centralized storage is that the deployment structure is simple, and RAID technology can also be used to ensure data security and reliability
D. The distributed network storage system adopts a scalable system structure and uses multiple storage servers to share the storage load. It not only improves the reliability, availability and access efficiency of the system, but is also easy to expand

Answer: A