Which of the following scenarios will cause interruption of host access to storage services?

A customer’s business application uses a Huawei OceanStor hybrid flash storage system with three pools, all of which are 8D+1P RAID5. One day, a business interruption occurred, and engineers found some scenarios that caused the failure by analyzing the logs.

Which of the following scenarios will cause interruption of host access to storage services? (Multiple choice)
A . In a fully redundant network environment, the master controller is reset.
B . The POOL where the service is located contains only ThinLUNs and no snapshots, LIN copies, clones, or services are configured. The log contains information indicating that the POOL space is full.
C . When the BST (bad track mark) function is disabled, BST bad tracks appear on the LUN.
D . The log contains the following printouts:
[2014-01-19 08:04:40] [Receive a disk-fault event of the disk (328) of pool (2) from Ctrl.]
[2014-01-19 08:40:35] [Receive a disk-fault event of the disk (613) of pool (3) from Ctrl.]

Answer: AD