1. When all BBUs of the storage controller are damaged, the controller will automatically set the IO write strategy to write through and lock to ensure reliability, and cannot be forced to write back before the failure is restored. (judgment)

2. Which of the following statements about Huawei OceanStorV3 SmartCache feature principle is correct?

3. A customer has a set of OceanStorV3 storage array. After the engineer collected the log information, he found that the time of power-on and start-up failed by printing "0&1OV2%3 disk -not exist". It can be determined that the reason for the system start-up failure is the insertion of the safe disk.

4. When using OceanStorV3, users need to access the snapshot data through mount or file system snapshot

5. Which of the descriptions are correct about database OLAP load characteristics? (Multiple choice)

6. SE sparse virtual disk is a virtual disk format that can reclaim the expired data of the virtual machine operation, or delete the space after the data

7. The data volume at site A is 600GB, and the data replication bandwidth between sites AB occupies 40% of the resources of the GE gateway. The synchronization type of asynchronous remote replication is the synchronization start timed waiting for 180 minutes, and the initial data synchronization starts at 9 am. What is the next synchronization start Time?

8. Windows supports MBR and GPT disk partitions. For GPT disks, which of the following statement are correct?

9. When configuring the catalog protection level of Huawei OceanStor 9000, if the protection level of the data is set to 4+2, it will be divided into 3 pieces of redundant data.

10. Which statement is incorrect about Quota Tree in the file system quota feature of OceanStor V3? (Multiple choice)

11. What factors are related to the bandwidth evaluation of Huawei storage heterogeneous migration? (Multiple choice)

12. The database application is one of the important applications supporting the storage array. Any storage array, operating system, file system, and database application system that may affect business operations are required for storage arrays (such as OceanStor V3 series storage) to cooperate with SQL Server applications to reach the goal of new energy. Which of the following statement is wrong?

13. In the planning of active-active, which cluster application supports the AA working mode when using the cluster application to find out?

14. The peak write bandwidth of an application is 16MB/s, the average write bandwidth is 500KB/s, the average IO size is 8KB, the private information overhead is 11%, the bandwidth utilization rate is 80%, and the disaster recovery network bandwidth is required to be no less than _____.

15. V2 stores 96 hard disks in a hard disk domain. It is recommended that the total number of LUNs in the hard disk domain is not less than ______.

16. In a project, OceanStor 18500 is used to enable SmartTier to achieve the performance of 5WIOPS and configure the three-tier Tier. According to the hierarchical configuration of the disk, the maximum high-performance calculation is 30,000 IOPS, the performance tier is 20,000 IOPS, and the capacity is 10,000 IOPS.

17. In the high and low water level, write IO is sequential small IO, the default low water level is 20%, and the high-water level is 80%, _______ is to optimize performance.

18. What operations are needed when OceanStorv3 divides storage space, and which configuration is not needed? (Multiple choice)

19. OceanstorV3 lun1 allocates 80% of the capacity at the capacity layer, and the probability of automatically assigning lun2 to the performance layer is 0%

20. Multipath can identify the original storage SN number in V1R008C20 and use basic camouflage when adding storage.