For the NDMP feature of Oceanstor9000 product, which of the following option descriptions is wrong?

• A.NDMP backup feature can be used by purchasing a license
• B.The NDMP protocol supported by Oceanstor 9000 is version V4
• C.The NDMP feature of Oceanstor 9000 uses snapshot-based backup by default
• D.In data protection scenarios and archiving scenarios, NDMP features can be used

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Which of the following descriptions of Huawei's OceanStor backup solution is wrong?

• A.The backup software can back up data to tape for offline archiving.
• B.Compared with disaster recovery, the recovery granularity of backup is finer, files can be used as the recovery level, and multiple recovery versions can be made.
• C.If the format of the source data and the backup data are the same, the backup data can be directly read and written by the host.

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The data capacity of site A is 2000GB, the data capacity of site B is 3000GB, and the data of site B is remotely copied to site A for storage, then the back-end storage capacity required by site A is (re-deletion ratio is 3):

• A.2000GB.
• B.900GB.
• C.5000GB.
• D.3000GB.

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In Huawei OceanStor Backup Solution, the backup data retention period is set to 15 days and the number of retention cycles is set to 2. Full backup is implemented once every 10 days.
Then, after how many days of retention will backup data become invalid?

• A.30
• B.15
• C.25
• D.20

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In the active and standby disaster recovery solution, what applications can be protected by RD at present? (Multiple choice)

• A.FusionSphere
• B.VMware
• C.Oracle
• D.SQL Server

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