RAID2.0 has the natural advantage of supporting a smart tier, to accelerate the performance of hot data. Which of the following descriptions about the smart tier performance is correct?
A. When smart LUNs act as backup media, smart tier's performance improvement on this LUN is not obvious.
B. During the running of the business, the extent size can be adjusted by the size of the hotspot area to obtain better performance.
C. Literacy ratio in the 1:9 scenario, enabling the smart tier has greatly improved the performance of the business.
D. Smart tier has no effect on host performance during hot data migration.
In the OceanStor 18000 storage system, a 15K RPM SAS disk is used. Assuming that the average seek latency of this type of disk is 6 ms. which type of disk can provide a single disk IOPS?
A. 100
B. 150
C. 125
D. 167
Huawei OceanStor storage controller BBUs are both in a fault alarm. Which description is correct for the upper application?
A. System does not work.
B. If the device is powered off unexpectedly, some of the business data will be lost.
C. Business performance is not affected.
D. Upper business IO read and write will not have any impact.
For commonly used SQL server 2005 and 2008, users can connect to a specific service through the SQL server management studio tool database engine. T login there are two ways to authenticate. Which mode is needed for the client application connection?
A. sql server authentication
B. Windows authentication
C. Log in as super user
D. Other ways when landing
Huawei Oceanstor 900 adopts erasure code technology to protect the data. If an office has six nodes, and the customer wants to have one office, what redundancy model protection level can be used? (Multiple choice.)
A. 4 + 3: 1
B. 6 + 3
C. 4 + 2
D. 12 + 3: 1
Which command will modify vg01 into vg - app without affecting the HPUX 11.31 system volume group?
A. can not sit down
B. vgchange
C. vgexport mkdir mknod vgimport
D. vgremove mkdir mknod vgcreate
When the database is protected and the virtual snapshots are used from the end to verify LUN data consistency on the production end and the disaster recovery end. However, the disaster recovery end of the LUNd database can not be started normally. What is the possible reason? (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 storage side of the database resides in the cache has not been 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. The incremental data is abnormally interrupted during the synchronization process and has not been repaired.
Which description of the N8000 Clustered NAS file system snapshot features and their application is wrong?
A. Snapshot file system can be dedicated as a separate space to the client.
B. For a file system can create multiple snapshots, support snapshots of the snapshot
C. Snapshot file system provides only read-only access to external, it cannot provide write operations
D. File System Snapshot Instantly copy the source file system completely available copy, when due to viruses or man-made misuse and other causes of the original file system is not available, the rollback of the snapshot can restore the original file system.
What value can the HP UN order lvextend-m parameters be set? (Multiple choice.)
A. 0
B. 1
C. 2
D. Unlimited
Oracle database normally starts the opening state of the process. Which files must it read? (Multiple choice.)
A. Parameter file
B. Control Documents
C. Archive log file D. Data files
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