The requirements of a banking business operation background storage system are as follows:
(1) The size of the business image file generated by the business operation system is basically about 100KB.
(2) The business operation system is all GE networking, the server and operating terminal are all GE interfaces, and subsequent upgrades to 10GE are considered according to business needs.
(3) Only 72TB of raw space is required, and the later expansion will give priority to the expansion of the disk.
(4) There is only 20U of cabinet space in the computer room for storing the storage equipment in this phase. It is preferred to configure 3 nodes + supporting switches to meet the planning of the computer room cabinet.
Based on the above requirements, the following more suitable networking solutions are:

• A. Option 1:
  1*Huawei OceanStor 9000 C Node
  36+2TBSATA configuration
  2*front-end GE+2*back-end 10GE
• B. Option 4:
  3*Huawei OceanStor 9000 P12E Node
  36*2T8 SATA hard disk
  2*front-end GE+2*back-end 10GE
• C. Option 3:
  3*Huawei OceanStor 9000 P Node
  36*2TB SAS hard disk;
  2*front-end GE+2*back-end 10GE
• D. Option 2:
  3*Huawei OceanStor 9000 C Node
  36*2TB SATA hard disk
  2*front-end GE+back-end 2*10GE

Enterprise F uses ERP systems, OA systems, Windows and Linux operating systems in the production environment. Among them, the total amount of ERP system data is not large, but the daily data update volume is relatively large and the data update volume is not large. But the total amount of data is not very large. The total amount of OA system data is large, but the data operating system and application software are updated from time to time every day.
For this enterprise backup strategy choice, which of the following is true? (Multiple Choice)

• A. The ERP system is suitable for a full backup every day
• B. For the operating system and application software, only one incremental backup needs to be done after each system update or installation of new software
• C. The OA system is suitable for incremental backup, and a full backup is done monthly or weekly
• D. While choosing the backup strategy, the enterprise needs to plan and design the backup window and recovery window at the same time

Which of the following is wrong in the description of the file system snapshot feature of Huawei OceanStor hybrid flash storage?

• A. After the file system creates a snapshot, as the file system is continuously updated, the original data blocks will gradually become the space occupied by the snapshot, but the newly written data will not be counted in the space occupied by the snapshot.
• B. Deleting a snapshot adopts the mechanism of reclaiming space, so the snapshot data space is released immediately after the snapshot is removed.
• C. The file system snapshot data cannot be deleted directly. This part of the space can be released only after the snapshot is deleted.
• D. When creating a snapshot of the file system, only the root node of the file system needs to be copied and saved, and a snapshot of the file system is formed.

An engineer needs to perform a snapshot rollback operation to obtain the source data at a certain point in the past. Which of the following statements is correct about this operation process?
(Multiple Choice)

• A. The snapshot rollback speed can reach the second level
• B. If the data is rolled back to the snapshot at time A, the snapshot created after time A will be deleted
• C. Snapshot rollback is a full-copy recovery of the source data at the base point in time
• D. If the data is rolled back to the snapshot at time A, the snapshot created after time A will not be deleted.

The virtualization platform migration solution is easy to operate and has no interruption in migration, and is suitable for scenarios such as VDI, virtual machine, and database cross- platform migration.

• A. TRUE
• B. FALSE