The ________ system refers to the establishment of multiple sets of IT systems with the same functions in distant places, which can monitor the health status and switch functions between them.

A company plans to perform performance tuning on a set of Huawei hybrid flash storage that uses a decision support system. The storage engineer obtained some information after testing:
1) The size of a single IO is 64 KB-1MB;
2) The proportion of sequential read IO is 90%;
3) The average utilization rate of front-end bandwidth is 90%;
4) The host application is a database.
Based on the above information, which of the following performance tuning measures does not meet the requirements of this scenario?

Which of the following statement about the storage system tuning process is incorrect?

During the homogeneous migration process, after the host multipath completes the link aggregation of the original LUN and eDevlun, the migration task can be created and the migration can be started.

The peak write bandwidth of an application is 10MB/s, the average of write bandwidth is 200KB/s, and the average write T0 size is 4KB (the bandwidth utilization rate is 70%). If the OceanStor V3 storage array needs to be used for data disaster recovery and the asynchronous replication mode is set, the minimum network bandwidth required is ?