In the software architecture of Huawei OceanStor 9000, the distributed object storage layer is built based on the distributed file storage layer.

Which of the following statements about big data processing technology are true? (Multiple Choice)

Which of the following distance conditions meets the requirements of the Huawei Remote DR Solution?

The storage capacity required by site A is 2543GB, the storage capacity required by site B is 3000GB, and the backup data of site B is remotely copied to site A for storage. Consider the case of replication compression, the compression ratio is 3. What is the back-end storage capacity required for computing site A?

After Huawei Distributed Storage turns on the object deduplication function, the system will automatically find duplicate objects globally, and only keep one copy of the same object while deleting redundant duplicate data. The original duplicate data will be replaced with a reference to the reserved single copy.