HCIE-Storage V2.5 Certification H13-629_V2.5 Exam Questions Online

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1. In the OceanStor V3 storage system, about the Cache high and low water level, which is correct? (Multiple choice)

The time that IO stays in the Cache is closely related to the setting of the low water level value. When the low water level is set higher, the issued IO can get more integration opportunities, thus improving the performance of random writes.

When the business pressure is high, you can increase the high water level appropriately, avoid frequently triggering the high-speed brushing, and make the system stable in the middle and low speed brushing.

When the write strategy is write-back, the Cache controls the storage capacity and the brush rate of dirty data through the high and low water levels.

By default, the low watermark value set by the system is 20. In the Oracle OLTP service scenario, the low water level can be appropriately increased to optimize the write performance.

2. In the HyperMetro Active-Active Data Center solution, which of the following statements about the preferred array is correct?

Specify a preferred access array on the OceanStor Ultra Path

Specify a preferred access array on the storage array

Selecting the preferred access array based on the business characteristics by the upper application

Specify a preferred access array when use the HyperMetro feature.

3. Which of the following description on the dual-live pair running status and host access status in HyperMetro is wrong?

double-live Pair running status: suspended Host Access Status: The primary LUN is readable and writable, and the secondary LUN is not readable or writable

double-live Pair running status: synchronization Host Access Status: The primary LUN is readable and writable, and the secondary LUN is not readable or writable

double-live Pair running status: normal Host Access Status: The primary LUN is readable and writable and the secondary LUN is readable and writable.

double-live Pair running status: mandatory start Host Access Status: The primary LUN is readable and writable and the secondary LUN is readable and writable.

4. For huawei OceanStor V3 storage system prefetch strategy, which is true?

smart prefetching is suit for single data flow reading application, or unable to determine whether the reading application is sequentially scene.

variable prefetching is suit for fixed-size size sequentially reading application. Such as multi-user streaming media on demand, users use the same stream.

fixed prefetching is suitable for the database application.

prefetch not suitable for multi-user multimedia on demand.

5. Customers need to create a new Oracle database server Huawei RH5885 V2 32-core CPU, the host using Redhat 6.4 operating system, file system EXT4; storage devices OceanStor V3, using SAS disks and configure 8D + 1P RAID5.

Zero to one million a day to bulk import data in the new database, which of the following ways to improve import performance? (Multiple choice)

Modify the value DB_WRITER_PROCESSES

Redhat system default CFQ reading algorithm for database efficiency is not high, it should be adjusted to noop algorithm

Oracle database FILESYSTEMIO_OPTIONS parameters can be set as Asynch and log off the system log file

Modify the Oracle DB_BLOCK_SIZE parameter

6. Which of the following steps are not part of the homogeneous online migration scheme are?

Source storage creates a spoofed eDevLUN and maps it to the target storage

Create a SmartMigration migration task on the target storage

Use the multipath command on the host to scan the disk and check the disk link information.

Consistent split migration task after migration is complete

7. When a node of the OceanStor 9000 fails, which of the following statements are correct?

automatically start data reconstruction

Need to manually start data reconstruction

Can't start data reconstruction

You should start the configuration import and then start the refactoring.

8. A company purchased two Huawei OceanStor 9000 devices, in order to protect the security of data, one set provides storage space for the production site, and the other set provides data redundancy on the disaster site.

Establish a remote replication between two sets of Huawei QceanStor 9000 storage systems, about the related configuration of creating remote replication Pair synchronisation strategy, the incorrect description is:

Recovery strategy supports manual and automatic the two modes.

Sync rate has high, medium and low, the three grades.

Synchronization Type has manual, time wait after the synchronization start, time wait after the synchronization complete, the three kinds of.

When the "Synchronization Type" set as "manual", no need to set the timing length. When the "Synchronization Type" set as "time wait after the synchronization start" or "time wait after the synchronization complete", it need to set the timing length.

9. In Oracle RAC deployment, after completing installing Grid software, what is the common used command description? (Multiple choice)

Check the cluster nodes: olsnodes -n

Check the status of the cluster: crsctl check cluster-all crsctl check crs

Check clusterware resource status: crsctl stat ser -t

Check the Oracle ASM operating states: ocrcheck

10. The MTTR indicator is used to describe the average continuous failure-free time during operational use or testing.

True

False

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11. Which configuration principle of Simpana backup media pool is wrong?

according to the different retention time to divide the media pool.

the number of media pool as much as possible to improve the performance and utilization.

according to the use of tape to divide the media pool.

according to the number or use of a storage policy to divide.

12. 1. The SmartPatition for OceaStor V3 storage can allocate independent cache space for different LUN. The capacity of the cache space is shared by both read and write operations.

TRUE

FALSE

13. In the OceanStor 9000 system, the partition of InfoEqualizer can’t be subnetted.

True

False

14. Which of the following is not a feature that Huawei uses in migration?

Migration Director

Smart Migration

Smart Virtulization

SVC

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