In the process of isomorphic online migration, if the host sends read I/O, it must go to the source storage to read the data and return it to the host.

There are two services, A and B, in the storage system of an Internet company that are constantly competing for cache and network resources, resulting in longer waiting times for other services. Among them, A business is a transaction processing application program, and B business is an analysis and query application program, which needs to ensure the immediate response of A business. To solve this problem, engineers configure the QoS priority of A service to be higher than that of B service.

A bank deploys two sets of Huawei all-flash storage. Storage A is deployed in the production center, and storage B is deployed in the disaster recovery center. The planning information is as follows:
(1) The business data, logs and modification information of the transaction system database are stored in LUNO1, LUNO2 and LUNO3 of storage A respectively;
(2) When storage A and storage B establish a remote replication relationship, add the remote replication pair of LUNO1, LUNO2, and LUNO3 to the consistency group.
During the process OF data synchronization, the remote replication task of LUNO2 fails.
The consistency group will immediately stop the remote replication tasks for LUNO1 and LUNO3.

Which of the following is not a function used by Huawei in the migration?

Huawei distributed storage, with 50 nodes, needs to use aggregation switches when planning the network