A is false. Huawei documentation shows that OceanProtect Backup Storage supports deduplication and compression for both LUNs and file systems , not only for LUNs. The file system creation parameters explicitly include dedup_enabled and compression_enabled, and Huawei’s remote replication command reference also distinguishes both lun and file_system objects on supported models.

B is true, so it is not selected. Huawei’s product highlights state that OceanProtect uses backup data preprocessing and variable-length deduplication to improve logical capacity utilization and reduce TCO. That matches the statement.

C is false. Huawei states that OceanProtect uses a compression algorithm to compress data blocks into smaller data blocks, and then combines and writes them into disks . So the statement is wrong because compression is not simply followed by direct disk writing “without the need to perform any operations”; there is still a combining/write process after compression.

D is false. The statement mixes up fixed-length and content-defined chunking. For fixed-length deduplication, data is divided into blocks of a fixed size , whereas Huawei’s deduplication description emphasizes variable-length deduplication for data reduction. Saying that fixed-length deduplication divides data into fixed-size blocks based on content is incorrect.