Which of the following descriptions of high-performance technology in HyperMetro is correct? (Multiple choice)

Which of the following descriptions of high-performance technology in HyperMetro is correct? (Multiple choice)
A . In the preferred array mode, when the host service accesses the space, I/O will only be load-balanced and delivered on the preferred array path set by the user. If this mode is configured, the arbitration server mode cannot be configured.
B . HyperMetro uses the host I/O granularity to add distributed range locks to the LBA intervals between host I/O accesses for concurrent mutual exclusion, thereby achieving the purpose of two-way real-time synchronization. This solution can save unnecessary data transmission bandwidth between arrays and effectively reduce the number of data transmissions.
C . HyperMetro optimizes the data transmission between arrays at the protocol level through the FastWrite function and applies the First Burst Enabled function of the SCSI protocol, reducing the number of link transmission intersections for write data by half.
D . Simplified copy uses hardware chips to quickly identify the data copy source. Find the zero data, and during the copy process, specially mark the all-zero data, and only transmit a small special page to the other end instead of the full data.

Answer: CD