Which Statements Are True About Huawei OceanStor V3 HyperMirror Feature

Multiple Choice

Which statements are true about Huawei OceanStor V3 HyperMirror feature? (Multiple Choice)

A) Create a mirror LUN for a common LUN. Due to internal information exchange, the LUN ID for hosts' read and write I/Os changes based on the information exchange result.
B) A LUN stores 2 GB of data. Create a mirror LUN for this LUN. During the creation, the system automatically generates a copy. The total data amount of the copy and mirror LUN is 4 GB.
C) HyperMirror can be configured for external LUNs, and external LUNs can be configured as HyperMirror copies.
D) When configuring HyperMirror, its copies must come from different disk domains.