In the data backup application scenario, compared with physical tape libraries, which of the following descriptions belong to the characteristics of disk backup media?
(Multiple choice)
A.
High backup and recovery performance.
B.
Low management and maintenance costs.
C.
It can realize the separation of the data storage disk and the device for reading and writing the disk, and realize the offline storage of the data.
D.
The unit storage cost is lower than that of physical tape.
Chosen Answer:
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