Which of the following concepts are used in object storage service (compatible with Amazon S3 APIs)? (Multiple Choice)

During data backup, in order to save space, single-selected data may be deduplicated, such as repeated data block A and block B.
Only one copy of data will be physically saved, and the corresponding index of block A or B will be deleted.

A colleague suggests using SmartMigration to improve write performance on certain LUNs.
This is:

What are the key technologies for OceanStor 9000 to improve the performance of object storage applications? (Multiple choice)

If the user has logged in to the SimpanaAdministrative Console before installation, the nodes installed after logging in cannot be displayed in the client list (not even after refreshing). At this time, you need to log out of the Simpana Administrative Console and log in again to see the newly installed nodes.