Which of the following combinations is recommended for the choice of networking and replication technologies in the two-site three-center disaster recovery solution provided by Huawei? (Multiple Choice)

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.

In the Fusionstorage system, the ( ) component processes IO messages sent by VBS, performs specific I/O data storage space operations, protects data redundancy, and persists it to storage media. (Please enter the English abbreviation)

During the database migration process, which ones are mainly responsible for customer assistance from Huawei? (Multiple Choice)

Mean Time Between Failures (MTBF), which describes the average continuous failure-free time of a product during operational use or testing.