To Prevent Data Loss Caused by Misoperations, System Faults, or Other

Multiple Choice

To prevent data loss caused by misoperations, system faults, or other man-made factors, data of the entire system or a part of critical data is copied from a storage device of the primary computer system to another storage device by using a certain method, which of the following is not keypoint of a backup system?

A) RTO
B) HA
C) BW
D) RPO