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.

When using advanced backup, the base volume periodically generates a snapshot copy of any historical time according to the backup policy, and if the copy expires, the corresponding snapshot is deleted.

After the WORM function is enabled on an object in the Huawei distributed storage system, the administrator finds that the object can be read and deleted, but cannot be modified. Object may be in unprotected worm state.

In Huawei's active-standby disaster recovery solution, Oracle RAC clusters are deployed at the production site to ensure that the disaster recovery database application can still provide services normally when the production end fails. Which of the following statement is correct?

Which of the following description about the SmartMigration feature is correct ? (Multiple Choice)