The supplied HCIE-Storage question set identifies A, B, and C as correct.

Link compression is an inter-array transmission optimization associated with HyperReplication. Because it operates on the replication path rather than in the host/application data path, it is transparent to the application server. The host continues to perform ordinary reads and writes against the primary storage system while HyperReplication handles the remote synchronization process.

Huawei describes HyperReplication as the core technology used to synchronize copies of local data to a remote storage system and distinguishes synchronous and asynchronous replication modes. For asynchronous replication, changed data is collected and transferred to the secondary system according to the replication period. Compression can therefore be applied inline to the transmission stream to reduce required WAN bandwidth.

Option D is not part of the keyed link-compression sequence. The retrieved Training Materials establish the HyperReplication transport and consistency mechanisms, but the parsed course text available here does not provide a detailed link-compression processing sequence that independently substantiates the specific ''decompress first, then verify'' assertion. Therefore, that additional sequence should not be inferred.

Study Guide Topics: Data Protection Solution HyperReplication Remote Replication Link Link Compression Bandwidth Optimization.