A company purchased a set of Huawei hybrid flash storage. The current business information is as follows:
(1) Online transaction business: random write IO accounts for 80%;
(2) Online query business: sequential read IO ratio is 90%;
(3) Storage configuration SSD, SAS and NL-SAS three kinds of hard disks.
When storage engineers plan storage services, which of the following are reasonable? (Multiple Choice)

The Huawei Oceanstor Dorado high-end system is expanded through a 2-port 100G RDMA shared module. Which of the following is the maximum number of controllers that can be expanded?

The virtualization platform migration solution is easy to operate and has no interruption in migration, and is suitable for scenarios such as VDI, virtual machine, and database cross- platform migration.

Which of the following statements is wrong about the N+M:B data protection mode supported by OceanStor 9000?

Divide a LUN by 9000, map it to the operating system and mount a dedicated file system, and use the test tool to write a large number of 13K files. In order to improve the IO performance, it is recommended to set the read size to 16K.