H13-629 : HCIE-Storage : Part 18
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Which statements are true about Huawei OceanStor V3 WORM feature? (Multiple Choice)
- When a file is in the locked state, the file protection duration can be manually prolonged or shortened.
- A locked file will shift to the expired state if the file system WORM clock value is greater than the file atime value.
- After the WORM file system compliance clock has exceeded the file expiration time, an appending file will shift from the appending state to the expired state.
- Only files of 0 byte can shift from the locked state to the appending state.
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To use the storage space of OceanStor V3 more efficiently, a customer has specified file system quotas for different departments. If a soft quota alarm is generated for the file system used by department A, which methods can be used to clear the alarm and ensure that new data can be successfully written?
(Multiple Choice)
- Delete the files that department A does not need to use.
- Enable SmartDeduplication for the file system used by department A.
- Expand the file system quota for department A.
- Enable SmartCompression for the file system used by department A.
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In an OceanStor V3 storage system, a disk domain has multiple types of disks. If one SAS disk is added to the disk domain, all disks of the disk domain will participate in data balancing.
- TRUE
- FALSE
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In an application scenario, the I/O service model is random read, and the I/O size is about 100 KB. Then, which is the proper stripe depth for LUNs on the storage system?
- 8 KB
- 16 KB
- 64 KB
- 128 KB
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Which commands are used to view SCSI controller information in RHEL5.5 (with Qlogic QLE2562-CK inside)?
- lspci | grep SCSI
- cat / proc / scsi / scsi
- cat / proc / scsi / qla2xxx/* | grep port
- lspci | grep Ethernet
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In Huawei OceanStor 9000, the CA that processes write requests divides data into strips based on the protection level and writes data strips into non-volatile dual in-line memory modules (NVDIMMs) if the corresponding nodes. Then these nodes calculate and write parity strips into their NVDIMMs. After all these nodes have successfully written parity strips, the write operation is successful.
- TRUE
- FALSE
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As shown in the figure, the main features of this backup network mode are:
(Multiple Choice)
H13-629 HCIE-Storage Part 18 Q07 005 - Backup tasks will consume a lot of LAN resources.
- Backup tasks will consume few LAN resources.
- Backup tasks will consume a lot of CPU resources of the production system.
- Backup tasks will consume few CPU resources of the production system.
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A physical standby database is kept synchronized with the primary database, through Redo Apply, which recovers the redo data received from the primary database and applies the redo to the physical standby database. Which of the following disaster recovery technologies is working as the above statement?
- LogReplecation
- DataGuard
- GoldenGate
- VVR
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In a synchronous replication scenario, an application’s peak write throughput is 16 MB/s, average write throughput is 500 KB/s, average write 1/0 size is 8 KB, private information overhead is about 11%, and the FC network bandwidth utilization rate is 70%. The throughput of the disaster recovery network must be at least ( ).
- 206 Mbit/s
- 23 MB/s
- 16 MB/s
- 800 KB/s
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An application’s peak write throughput is 10 MB/s, average write throughput is 280 KB/s, average write I/O size is 4 KB, and the network bandwidth utilization rate is 70%. If OceanStor V3 storage systems are used to implement data disaster recovery based on asynchronous replication, Synchronization Method is set to Timed wait when synchronization begins, and the value of Interval is 4 hours, the expected duration to synchronize data is no more than 1 hour. So the minimum network throughput should be (_).
- 1600 KB/s
- 400 KB/s,
- 15 MB/s
- 10 MB/s
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Huawei HyperMetro active-active disaster recovery supports heterogeneous storage. Therefore, an OceanStor V3 storage system and a Huawei certified third-party storage system can work in active-active mode based on HyperMetro.
- TRUE
- FALSE
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When the data migration solution based on remote replication is used, services must be suspended at least once.
- TRUE
- FALSE
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Which statement about SmartMigration functions is false during a SmartMigration-based migration?
- If multiple LUNs are used by a service, the LUNs must undergo a consistency splitting after the migration.
- If multiple LUNs are used by a service, consistency splitting cannot be performed before stopping services.
- For higher migration speed and storage performance, a migration task can be deleted as soon as it is completed.
- It is recommended to perform consistency splitting in off-peak hours.
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A customer’s database application is running on an OceanStor V3 storage system. The database uses six LUNs. The customer wants to migrate data from the OceanStor V3 storage system to an OceanStor 18000 series storage system based on the functions provided at the storage side. Which statements are true?
(Multiple Choice)
- If you use the HyperReplication function to migrate data on multiple LUNs used by the database, you must add multiple remote replication tasks to one consistency group.
- The HyperReplication function can implement online data migration.
- After data is migrated using HyperCopy or HyperReplication, services can be started without the need to make any configuration on the host.
- If data is migrated using HyperCopy, the migration speed can be dynamically changed during the copy process.
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While migrating data to HUAWEI Storage, SmartVirtualization- and SmartMigration-based migration includes the following steps: a. Changing mappings for the source storage; b. Stopping services; c. Taking over the source storage; d. Migrating data; e. Recovering services and applications. Which sequence correctly describes an online migration procedure?
- acbde
- baced
- abcde
- eacbd
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Which of the following are characteristics of the SmartVirtualization-based Data Migration Solution?
(Multiple Choice)
- It does not consume any host resources.
- It is lower in migration cost than gateway-layer solutions such as those based IBM SVC, and EMC VPLEX.
- It requires services to stop only once, and the service stopping occurs after the migration.
- It delivers higher migration speed than host-layer solutions.
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The design of Oracle database system should give attention to both performance and data reliability. Which reliability designs will reduce the performance of Oracle?
(Multiple Choice)
- Multi mirror log group
- Using Oracle RAC
- Archive Mode
- Frequent CheckPoint
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Many “log file switch” wait events are observed during Oracle performance diagnosis, which ways can be used to optimize the performance?
(Multiple Choice)
- Increase log cache.
- Migrate the log file to the high performance layer.
- Increase the number of log groups.
- Increase the concurrency and throughput for archiving the log file.
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In the same operating system environment, what is the order to restore the oracle database through RMAN?
- controlfile, datafile, pfile
- pfile, datafile, controlfile
- datafile, pfile, controlfile
- pfile, controlfile, datafile
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Mainstream virtualization technologies include hardware virtualization (Hypervisors) and operating system virtualization (Containers). Which are key characteristics of hardware virtualization?
(Multiple Choice)
- Multiple VMs simultaneously run on a single physical server.
- VMs on the same server are isolated from each other.
- A VM encapsulates the entire system into one or more files.
- A VM on one server can run on another server without any modification.
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Which of the following functions in VMware leverages content-based read cache (CBRC) of ESXi hosts as shown in the figure to ease the pressure of partial storms in VDI?
H13-629 HCIE-Storage Part 18 Q21 006 - Linked Clone
- VSA
- SE Sparse
- User Data Management
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VMFS provides automatic cluster file system functionality and intelligent cluster volume management. Which statements are true about VMFS5?
(Multiple Choice)
- VMFS5 allows concurrent access to shared storage and can be dynamically expanded.
- Using data blocks of 1 MB, VMFS5 is suitable for storing large virtual disk files.
- Using sub-blocks for addressing, VMFS5 is suitable for storing small files. The sub-block size is 8 KB.
- VMFS5 is able to lock disk data blocks.
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In VMware virtualization environment, if the user wants to migrate a VM from one ESXi host to another with no downtime, (_) can be used for this; if the user wants to migrate virtual machine storage disk files to another storage array with no downtime, (_) can be used.
- vMotion, Storage DRS
- Storage vMotion, Storage DRS
- vMotion, HA
- vMotion, Storage vMotion
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In Huawei FusionSphere, which are typical application scenarios of the snapshot function?
(Multiple Choice)
- Data backup
- Data restoration
- Data copy
- Data deletion
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