Which of the following statements is true?

The number of Dorado 5300 V6 dual-control expandable front-end interface cards is

FusionInsight does not need to interrupt services during upgrade and expansion

Is the following statement correct?

If a customer wants to obtain a complete copy of the data of a LUN at a certain time for data analysis on the basis of uninterrupted business, which software function can be recommended for the customer?