The source end is a third-party storage device and the target end is Huawei OceanStor hybrid flash storage. What are the current migration solutions? (Multiple choice)

The source end is a third-party storage device and the target end is Huawei OceanStor hybrid flash storage. What are the current migration solutions? (Multiple choice)
A . Snapshot Migration Solution
B . Local user/group migration solution
C . Cross-protocol migration solution
D . Cross-site migration solution

Answer: AD