The customer replaced the old storage based on volume migration. Which parts need to be checked and verified before officially launching the business? (Multiple choice)

The customer replaced the old storage based on volume migration. Which parts need to be checked and verified before officially launching the business? (Multiple choice)
A . File group, file system mount path
B . Hard disk load and other situations
C . Storage multipath redundancy
D . Complete information about volume groups and volume information

Answer: ABCD