Taking Huawei OceanStors all-flash storage devices as an example, which of the following descriptions about logical ports are correct? (Multiple Choice)

An enterprise uses Huawei's all-flash storage system to support its main business. In order to reduce the storage pressure caused by duplicate data, if the data type is not suitable for online deduplication, the ( ) of the data is calculated and the result is inserted into the opportunity table.

smartqos is based on the I/O ( ) scheduling technology and flow control technology of Lun.fs snapshots to ensure core business

Before the cloned file system of Huawei OceanStor hybrid flash storage is split, when the data of the parent file system is physically damaged, the data of the parent file system can be recovered.

A company plans to upgrade the disaster recovery system, which requires the overall disaster recovery capability to meet the international standard SHARE7 8 Tier 7. The IT department takes the input-output ratio into consideration when planning and designing. The active and standby disaster recovery plan is selected.