In the scenario of protecting the database, the slave uses the virtual snapshot method to verify the services of the production end and the DR-sideand discover the data of the DR on the disaster recovery end.
What are the possible reasons that the library can not start normally? (Multiple choice.)
A . After a snapshot of the LUN of the redundancy site is created, the snapshot is not activated at the same time.
B . Disaster recovery side of the data stored in the cache, not yet written to the hard disk.
C . When creating a snapshot on the disaster recovery end LUN, the production end is copying data to the disaster recovery end.
D . The production end and disaster recovery end adopt the disaster recovery solution of incremental LUN copy, and the incremental data link is abnormal during the synchronization.
Answer: A,C,D