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.

A company purchased 2 sets of Huawei all-flash storage devices to deploy database services, which were deployed in data center A and data center B in city M, and completed the active- active disaster recovery configuration.
Which of the following failures will not cause business interruption? (Multiple Choice)

In the process of SSD garbage collection, the SSD disk can directly erase the entire block without moving valid data, and can use less systematic writing methods.

Which of the following statements about the Huawei OceanStor 18000 Smart Matrix architecture is incorrect?

Since the first three nodes of Huawei OceanStor 9000 form an ISM cluster, when connecting the equipment, the first three storage nodes NICO need to be connected to the management switch.