Due to Business Needs, When a Reboot Operation Is Performed

Multiple Choice

Due to business needs, when a reboot operation is performed on a VTL6900 (including the VTL engine, SIR engine, storage unit, and optical switch) which description is correct? (Multiple choice)

A) Power off the VTL6900 as a whole without any special requirements
B) Restart the device according to the following restart sequence: VTL engine restarted SIR engine restart Fiber Channel switch and storage unit restart
C) restart the device as follows to restart the device:
D) If the VTL engine is configured for A and B two-node clusters, suspend the VTL failover and then restart the VTL engines A and B in turn After all the two nodes of A and B are normally started, restore the VTL failover