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.
- A . TRUE
- B . FALSE
Which configuration principle of Simpana backup media pool is wrong?
- A . according to the different retention time to divide the media pool.
- B . the number of media pool as much as possible to improve the performance and utilization.
- C . according to the use of tape to divide the media pool.
- D . according to the number or use of a storage policy to divide.
Which description of OceanStor V3 remote file system copy is correct? (Multiple choice)
- A . using the object-based layer way to get the data replication.
- B . using the ROW-based snapshot periodic ratio way to get the data replication.
- C . can trigger or trigger system timing synchronization manually by the user.
- D . support the terminal file system Quota information copy to the slave side and slave side is no need to set allocation Quota.
Which of the following is not a feature that Huawei uses in migration?
- A . Migration Director
- B . Smart Migration
- C . Smart Virtulization
- D . SVC
About Huawei OceanStor18000 Smart Matrix architecture, which is not correct?
- A . Scale-out: storage resources to expand as needed to increase the engine performance can be realized, capacity increases linearly.
- B . All exchange: use PCIE 1.0 Total exchange network, to provide sufficient switching bandwidth to meet the stringent performance requirements.
- C . inherent load balancing: Full live controller, balanced load sharing, improve storage resource utilization.
- D . fully redundant: all component redundancy, intelligent switching component failure to meet the stringent business continuity requirements.
Currently, there are more and more demand for centralized storage of different types of services, and different types of services have different storage requirements.
A company plans to purchase a set of OceanStor V3 storage, configure 10 600GB SSD disks, 20 1.2T SAS disks, 40 4TB SATA disks, and plan to deploy oracle database, Exchange mail application and video application on this storage device. Which of the following configurations can improve overall business performance? (Multiple choice)
- A . Set 4 SSD to SmartTien and configure all remaining disks into one disk domain and one storage pool and enable SmartTier.
- B . For the LUN that provides the Oracle datastore, the write cache is set to WriteBack.
- C . Create separate disk domains and storage pools for video applications.
- D . Enable SmartTier for LUN that provide mail data storage, and set the migration policy to automatic migration.
For huawei OceanStor V3 storage system prefetch strategy, which is true?
- A . smart prefetching is suit for single data flow reading application, or unable to determine whether the reading application is sequentially scene.
- B . variable prefetching is suit for fixed-size size sequentially reading application. Such as multi-user streaming media on demand, users use the same stream.
- C . fixed prefetching is suitable for the database application.
- D . prefetch not suitable for multi-user multimedia on demand.
Which of the following description on the dual-live pair running status and host access status in HyperMetro is wrong?
- A . 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 - B . 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 - C . double-live Pair running status: normal
Host Access Status: The primary LUN is readable and writable and the secondary LUN is readable and writable. - D . 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.
The customer environment is RedHat 6, and the HBA is Emulex LPe12002. The operating system is powered by Huawei OceanStor V3. When the storage system and the host environment are directly connected to each other, the storage host port can select the P2P topology mode.
- A . TRUE
- B . FALSE
For common SOL Server 2005 and 2008, users can connect to database engine of a specified server through SQL Server Management Studio tool. There are two connection authentication ways in the "Connection" group, wherein in ( ) mode, need to provide a user ID and password required when client application connects.
- A . SQL Server Authentication
- B . Windows Authentication
- C . When the superuser login
- D . when landing in other ways
In the OceanStor V3 storage system, about the Cache high and low water level, which is correct? (Multiple choice)
- A . 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.
- B . 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.
- C . 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.
- D . 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.
Which steps required on the target side in the Exchange 2013 DAG migration solution? (Multiple choice)
- A . new create CAS server
- B . new create Mailbox server
- C . Add the target Mailbox server to DAGS
- D . Add a database copy to the source Mailbox server
The three levels of Simpana backup architecture system are: (Multiple choice)
- A . backup server
- B . Media Server
- C . backup media
- D . backup client
Under HPUX system has two user volume group: vg01 and vg02, run the following command: vgexport -v -s -p -m/tmp/vg01.map /dev/vg01 and vgexport -v -s -m /tmp/vg01.map /dev/vg02, execute vgdisplay can check which volume group?
- A . vg01
- B . vg02
- C . vg01, vg02
- D . empty
In the process of SAN storage migration of AIX LVM, the design of data migration is a very important stage. Before access to the new equipment, you need to consider some issues help for the design of data migration, including ( ) (Multiple choice)
- A . could/should this device be connected to the existing SAN?
- B . how is AIX system connected to new storage devices
- C . how can AIX system and data migrate from the old disk to the new disk
- D . Whether the format of the file system, genus group of storage files are compatible with the new device volume
In the OceanStor 9000 storage system, when the InfoReplicator feature master-slave switchover, it supports automatic switching of quotas, share permissions, stripe size and directory redundancy ratio.
- A . TRUE
- B . FALSE
In the two places but with three-center disaster recovery solutions provided by Huawei, about the relevant network and replication technology’s selection, which of the following combinations are recommended? (Multiple choice)
- A . Same city Ethernet, asynchronous data replication
- B . Same city FC networking, synchronous data replication
- C . remote Ethernet, asynchronous data replication
- D . offsite FC networking, synchronous data replication
In Oracle RAC deployment, after completing installing Grid software, what is the common used command description? (Multiple choice)
- A . Check the cluster nodes:
olsnodes -n - B . Check the status of the cluster:
crsctl check cluster-all
crsctl check crs - C . Check clusterware resource status:
crsctl stat ser -t - D . Check the Oracle ASM operating states:
ocrcheck
When a node of the OceanStor 9000 fails, which of the following statements are correct?
- A . automatically start data reconstruction
- B . Need to manually start data reconstruction
- C . Can’t start data reconstruction
- D . You should start the configuration import and then start the refactoring.
Which of the following steps are not part of the homogeneous online migration scheme are?
- A . Source storage creates a spoofed eDevLUN and maps it to the target storage
- B . Create a SmartMigration migration task on the target storage
- C . Use the multipath command on the host to scan the disk and check the disk link information.
- D . Consistent split migration task after migration is complete
Which of the statement about OceanStor V3 storage system tuning process is wrong?
- A . need to understand the business (applications and data, etc.), specific tuning goals.
- B . after tuning all systems involved in performance bottlenecks configuration parameters, and then determine whether the tuning goals is completed.
- C . before tuning to be backed up business systems and data.
- D . process monitoring and analysis of the business performance data, confirm the performance bottlenecks and analyze the root cause.
In the HyperMetro dual-live scenario, the storage for Data Center A and the storage group for Data Center B are built as a cross-site cluster. The following description of the cluster which is correct? (Multiple choice)
- A . All storage in the cluster provides an application server with no difference in parallel access.
- B . FC or IP can be used as the communication link between site A and site B in the cluster: The FC link can provide higher transmission efficiency, the IP link is easy to deploy without distance restrictions.
- C . Dual-active LUN on two storage arrays in a cluster form a virtual dual-active LUN. Real-time mirroring keeps real-time data of dual-active member LUN in both data centers in real time.
- D . In the cluster, the controllers are equal. When one controller fails, the cluster switches the service to a lighter-loaded controller according to the load of each controller.
Which of the following LUN may the Huawei OceanStor v3 SmartErase feature be applied to?
- A . Thin LUN
- B . Snapshot LUN
- C . Thick LUN
Dual-control 5500V3 online migration S2600 storage, when the migration rate selects "medium speed", what is the maximum migration rate?
- A . 28OMB/S
- B . 15OMB/S
- C . 80OMB/S
- D . 40OMB/S
Some customer wants to deploy a OceanStor V3 to meet its capacity and performance requirements. Which of the following do we need to consider the specific hard disk configuration number? (Multiple choice)
- A . bare capacity of hard disk
- B . metadata space size
- C . Type of Hard disk
- D . RAID type
Hot Standby strategy in Oceanstor 1800 is set to high, all using 1TB hard disk, when in the hard disk domain respectively have 8 pieces of hard disk,80 pieces of hard disk,180 pieces of hard disk and 280 pieces of hard disk, how much hot spare space will the system assign respectively? (Unit: TB)
- A . 1, 7, 8, 9
- B . 1, 7, 15, 24
- C . 1, 4, 8, 8
- D . 1, 5, 7, 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:
- A . Recovery strategy supports manual and automatic the two modes.
- B . Sync rate has high, medium and low, the three grades.
- C . Synchronization Type has manual, time wait after the synchronization start, time wait after the synchronization complete, the three kinds of.
- D . 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.
In the HyperMetro Active-Active Data Center solution, which of the following statements about the preferred array is correct?
- A . Specify a preferred access array on the OceanStor Ultra Path
- B . Specify a preferred access array on the storage array
- C . Selecting the preferred access array based on the business characteristics by the upper application
- D . Specify a preferred access array when use the HyperMetro feature.
An enterprise purchased a set of Huawei OceanStor 9000 storage, the company’s part of the basic software is stored in a directory, that requires all staff can access the sharing, in order to facilitate the operation, do not require to enter the account password when accessing. Engineers can do this when configuring, the basic software directory is set for NFS sharing, and check "guest Enable" option under the sharing.
- A . TRUE
- B . FALSE
Which of the following technologies can VMware VADP combined use for backup window double compression?
- A . vCloud Director
- B . IntelliSnap
- C . DASH COPY
- D . Virtualize Me
In the OceanStor 9000 system, the partition of InfoEqualizer can’t be subnetted.
- A . True
- B . False
The MTTR indicator is used to describe the average continuous failure-free time during operational use or testing.
- A . True
- B . False
If the hard disk or node of the OceanStor 9000 device fails or goes offline, some members of the system are in a degraded state (EC redundancy protection state), and the newly written data is also in a degraded state. When the faulty or offline hard disk or node is normal, the redundant data is saved according to the EC algorithm to ensure the reliability of the data.
- A . True
- B . False
The following description about Huawei OceanStor integrated backup solution, which is correct? (Multiple choice)
- A . Designed for Small to Medium-sized Business (SMB) local solutions that support LAN-Base and LAN-Free backup.
- B . The integrated backup node adopts the Huawei RH2288H V3 server and integrates with the industry’s leading backup software. The backup server, backup media, and backup software are integrated into one chassis to reduce the time and difficulty of service engineer’s delivery on the customer’s existing network.
- C . AThe integrated backup solution provides separate 2 * 10GE and 4 * GE NICs for backup data and reduces the impact of backup jobs on the business system.
- D . When the backup data capacity exceeds the storage capacity of the integrated backup node, multiple integrated backup nodes need to be deployed.
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)
- A . Modify the value DB_WRITER_PROCESSES
- B . Redhat system default CFQ reading algorithm for database efficiency is not high, it should be adjusted to noop algorithm
- C . Oracle database FILESYSTEMIO_OPTIONS parameters can be set as Asynch and log off the system log file
- D . Modify the Oracle DB_BLOCK_SIZE parameter
A OceanStor V3 System "Alarm" shows there is a message: "SFP [0] Low Rx power alarm because Low Rx Pow ALM of SFP0 is detected", cause of the fault is:
- A . equipment power distribution voltage is insufficient; the equipment is changed into DC power supply
- B . power supply module power is insufficient, replace the power supply module
- C . Board voltage is low or received optical power is low
- D . The optical module buckles loose connections
The SmartVirtualization feature of the storage is used in Huawei’s heterogeneous virtualization migration solution. The main advantages of this feature include: (Multiple choice)
- A . Good compatibility
- B . Take up less storage space
- C . Excellent function expansion
- D . Ability to configure heterogeneous storage systems
Engineer install OceanStro 9000 equipment to a customer unit (total 5 OceanStor 9000 C Node, front and rear ends are 10GE TOE networking, on-site install TOE card), the device has completed the putaway, the next will connect the signal lines, power lines, and software test due to the tight schedule, hardware installation process has the following phenomena, do you think which of the following description for these phenomena is correct? (Multiple choice)
- A . TOE network card inserted in the 5 equipment all have A0, B1 and A0, B3 two ways, because is inserted on the PCIe slots, will not affect the deployment of the system also not affect the network bandwidth, so can’t adjust.
- B . In order to be able to manage each Node separately, all Node must access the NIC0 port management network.
- C . the signal cable of tag "NODE01 A0-0" plugged in the Ethernet port position is A0-1, the signal cable of tag "NODE01 B3-1" plugged in the Ethernet port position is B3-0, due to the same network card two network port equivalent, can insert line dislocation, can’t be adjusted.
- D . CE6350 switch connect the two stacked copper, one of failure need late replacement, because they do not affect the network interworking, you can start with the basic software measurement
Which of the following description about the arbiter server model for HyperMetro is correct? (Multiple choice)
- A . The arbitration server is proposed to be deployed in a data center where the storage performance is better. When arbitration is needed, high-performance storage can win more easily and continue to provide services.
- B . In the mode of arbitration server, if a site has the priority to obtain the request of arbitration, it is also possible to configure the site priority. The priority array side has the priority of arbitration wins and the heart interrupt but otherwise normal, the priority array will get the arbitration victory.
- C . Double live domain contains array A and array B, arbitration server. If both Array A and the arbiter fail at the same time, Array B survives to provide service.
- D . Arbitration server failure, the business will continue to operate normally.
Which of the following scenarios do not support homogeneous online migration based on heterogeneous virtualization features?
- A . Huawei self-developed multipath with the source storage is S5500 and the host installed V1R8C20
- B . Huawei self-developed multipath with the source storage is S5500T and the host installed V1R8C20
- C . The source storage is S5500 and the host operating system type is Solaris.
- D . The source storage is S5500T and the host comes with multipath use SCSI reserved cluster scenario.