SmartVirtualization is an important value-added feature of Huawei OceanStor V3 storage system. Which of the following is correct about its principle and related concepts? (multiple choice)
A. The local storage system does not occupy the local storage system when using LUNs in heterogeneous storage systems
B. For external LUNs, the local storage system can set value-added functions such as remote replication, snapshots, etc.
C. smartVirtualization uses multipathing software to connect heterogeneous storage in a multipathredundant manner
D. smartVirtualization Dictate write data write efficiency is higher than the write-back efficiency
For Oracle database to do online RMAN physical backups, you need oracle to run in _____ mode; To restore data files, you need to start the Oracle____(Fill in the blanks multiple choice)
A. Non-archiving
B. Archiving
C. nomount
D. mount
Which of the following describes Youtube, Facebook and other content warehouse sites data storage? (multiple choice)
A. unstructured data high proportion
B. large amount of data, rapid growth
C. A variety of data types
D. data unit GB value of high density
The Huawei OceanStor storage system uses asynchronous multi-time cache for asynchronous remote replication to make the remote asynchronous RPO index of the LUN reach the second level.
A. True
B. False
With Redhat linux enterprise 6 system the df and du commands allow you to see the mnt capacity, as shown below. What causes the capacity shown to not be the same?
redhat: ~ # df -h / mnt Filesystem Size Used Avail Use% Mounted on / dev / sdb 1008M 514M 443M 54% / mnt redhat: ~ # du -hs / mnt 40k / mnt
A. The mnt directory mounted block device is abnormal
B. The mnt directory is also mounted another block device and some files that are currently open.
C. The mnt directory have been deleted
D. This is a bug of the known du and df commands that need to be upgraded to the latest version
When one of the nodes in the Huawei N8000 cluster fails, the service IP address of the node cannot be accessed. Which of the following methods can recover the affected services?
A. Restart the failed node
B. Use the other node's business IP access
C. Only manually switch the node's service IP to the remaining nodes
D. restart service
Which of the following statements regarding the Quota Tree file system quota feature of OceanStor V3 is NOT correct? (Multiple Choice)
A. Quota Tree can share through the agreement, and when it is being shared, it is not allowed to rename and delete.
B. Can operate across Quota Tree's move files (NFS protocol) or cut files (CIFS protocol).
C. A hard link between two different Quota Trees is allowed.
D. No hard link between two different Quota Trees is allowed.
Two Standard Edition N8500 nodes created two file systems, namely fs01 and fs02 and the file systems are online. If the two file systems are set, then which of the following will appear?
A. The file system is automatically offline and can not be pulled manually
B. The file system is automatically offline, but it is also manually pulled
C. file system will not automatically offline, but if you manually offline it and then try it offline
D. The file system does not automatically offline, but it will succeed if you manually try to bring it offline again
Which of the following is NOT correct regarding the backup RMAN?
A. Backup slice size is unlimited, but its size can be set by maxpiecesize
B. The backup piece is a binary file used to store the backup set information
C. One or more backup pieces form a backup set
D. A backup piece corresponds to a separate input output file
In a disaster recovery plan design, RTO and RPO are the most basic standards. For example, you need to start recovery within half a day after a disaster and the RTO value is twelve hours.
A. True
B. False
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