In the scenario of protecting the database, the slave uses the virtual snapshot method to verify the services of the production end and the DR-side and discover the data of the DR on the disaster recovery end. What are the possible reasons that the library can not start normally? (Multiple choice.)
A. After a snapshot of the LUN of the redundancy site is created, the snapshot is not activated at the same time.
B. Disaster recovery side of the data stored in the cache, not yet written to the hard disk.
C. When creating a snapshot on the disaster recovery end LUN, the production end is copying data to the disaster recovery end.
D. The production end and disaster recovery end adopt the disaster recovery solution of incremental LUN copy, and the incremental data link is abnormal during the synchronization.
The OceanStor V3 storage system has 96 hard disks in one hard disk domain. To maximize the performance of the hard disk, it is recommended to use the LUNs in the hard disk domain. The total number of hard disks is not less than:
A. 96
B. 4
C. 32
D. 12
What are the recovery mode drills of the Huawei Replication Director disaster recovery? (Multiple choice.)
A. Planned Migration
B. Failover
C. Business Recovery
D. fault recovery
Which of the following feature is correct about the OceanStor V3 volume mirroring? (Multiple choice.)
A. After creating a mirrored volume for a normal LUN, the server read-write IO results in a change as a result of internal information exchange.
B. The amount of data actually stored on a LUN is 2G, the total copy of the data is 4G. A volume image is created for the LUN, the LUN is mirrored when the copy is generated during system creation.
C. You can configure a volume mirror for external LUNs or configure external LUNs as mirror copies.
D. When configuring volume mirroring, mirror copies are required from different disk domains.
Huawei Oceanstor 9000 provides a single file system to the outside through the unified file system namespace management. Which of the following description is correct? (Multiple choice.)
A. The namespace is automatically created when HUAWEI OceanStor 9000 is started with the same name as the system namespace.
B. Namespaces as the root directory of the entire system can not be shared and visited, only if ask the subdirectories below it can be shared and visited.
C. A unified namespace provide users with a unified storage resource pool to achieve the centralized management of storage space and distribution.
D. Each file share directory is a subdirectory of the namespace.
When planning an active-active disaster recovery solution, the business end adopts the cluster application. Which of the following clusters is the application cluster?
A. mSCS
B. Oracle RAC
C. HACMP
D. SQL server
Which of the following is correct about Huawei OceanStor v3 unified storage system? (Multiple choice.)
A. Standalone SAN engine and stand-alone file engine
B. Parallel dual-stack by way of parallel support (SAN) and file system (NAS)
C. Use unified storage pool technology
D. file system can achieve deduplication data compression function
Disaster recovery project information research mainly includes information about who, what, and why. What is the following information background? (multiple choice)
A. A bank has more than XX customers and XX corporate customers.
B. Data loss will be huge and business disruption may result in significant financial loss.
C. Business interruption has a huge impact, and the interruption time in business deployment is less than 2 hours.
D. Clients want to build two live-action data centers in the same city to realize the key business activities such as RTO 2.
An enterprise buys a set of Huawei OceanStor 9000 storage systems. Some of the enterprise's basic software is stored in a directory, and users can access enjoy/it. In order to facilitate the operation, users should not enter the account password, and the basic software directory is set to NFS enjoy, you should check the share of the "guest enabled" option.
A. True
B. False
In preparation for disaster recovery design, which of the following is correct?
A. Use the same type of disk as the master
B. Raid should be set the same as the master
C. The capacity of Lun and primary LUN is the same
D. Use the same number of disks as the master
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