Which of the following are correct regarding a Storage Array RAID 2.0 Typical Application Performance Tuning? (multiple choice)

Scenario: Sequencing large IO services, especially 1M IO scenarios, with the phenomenon that the back-end read bandwidth is much larger than the front-end read bandwidthTuning: Turn off the corresponding LUN prefetch policy

scene: the order of pressure reading and writing business conditions, high utilization of hard drivesTuning means: increase the unplug-thresh device hard disk device

Scenario: Oracle database in the operation of data backup, the data on the LUN bandwidth does not meet the requirements and accompanied by high utilization of hard diskTuning means: the formal creation of POOL to increase the depth of the points

Scenario: Sequencing large IO services, especially 1M IO scenarios, with the phenomenon that the back-end read bandwidth is much larger than the front-end read bandwidthTuning: Turn off the corresponding LUN prefetch policy

scene: the order of pressure reading and writing business conditions, high utilization of hard drivesTuning means: increase the unplug-thresh device hard disk device

Scenario: Oracle database in the operation of data backup, the data on the LUN bandwidth does not meet the requirements and accompanied by high utilization of hard diskTuning means: the formal creation of POOL to increase the depth of the points

Scenario: In the case of single concurrent or low concurrent read service, the delay is found to be largeTuning means: change disk unplug 8 Modify unplug - thresh increased from 4 to 8

Customers using 5 ESXI 5.5 hosts and configured DRS / HA, are seeing the error "HA insufficient resources" when the administrator starts the DB virtual machine. Using the HA configuration shown in the figure select the correct solution. (multiple choice)

Stop one or more virtual machines

Suspend one or more virtual machines

Set the virtual machine restart priority

Which of the following descriptions about the InfoEqualizer features of the OceanStor 9000 storage system are incorrect. (Multiple Selections)

Dynamic domain name, which returns the dynamic IP address of the node for the client, supports the failover function and is recommended for CIFS protocol sharing

Static domain name, which returns the domain name of the node's static external IP address to clients, is recommended for NFS protocol sharing

Dynamic domain name, which returns the dynamic IP address of the node for the client, supports the failover function and is recommended for CIFS protocol sharing

Static domain name, which returns the domain name of the node's static external IP address to clients, is recommended for NFS protocol sharing

dynamic external IP address, node failure, the dynamic IP address can be automatically assigned to other working nodes, the client can pass againThis IP address is connected to the OceanStor 9000

static external IP address, the node fails, the client can not access the oceanstor 9000 through the IP address

A RedHat Linux 6 system includes a specific file folder read and write errors, the file system needs to be modified after the diagnosis. Which of the following is the correct repair operations?

Using the root user, perform a fsck fix on the device while the file system is unmounted

Direct use of the root user, in the case of the file system is mounted fsck repair

Using the owner of the user data file, perform an fsck fix if the file system is mounted

Use the owner of the user data file to perform a fsck fix on the device if the file system is unmounted

Using the root user, perform a fsck fix on the device while the file system is unmounted

When using lvm to create a mirrored logical volume, you should choose what kind of log file to save in order not to impact performance and quickly recover from a single drive failure?

Store the log in the third PV of the current VG

Store the log in any one of the two PVs

Store the log in the third PV of the current VG

In two OceanStor unified storage arrays configured with remote replication, the optimal path for remote replication data transmission is:

Host - "Link-connected Primary Array Controller -" Link-connected slave array

Host - "Linking Primary Array Controller -" Linking From Array Controller -> (Forwarding) Controller operating from a LUN

Host - "Primary LUN Controller -" (Forwarding) Primary Device Controller for Linking - "Link from the array controller

Host - Primary LUN Controller -> (Forwarding) Link Primary Fabric Controller - "Linking From Array Controller -"Hair) from LUn work controller

Host - "Link-connected Primary Array Controller -" Link-connected slave array

VTL 6900 engines A and B nodes form a cluster, on the A, B node between the business bearer and the fault automatically switch, which of the following description is correct? (Multiple choice)

When the node a is found through the sms -v command, the status of the IPStor Authentication Module is FAIL. The service of the node A will be from Move to Node B.

A, B nodes can work in Active-Active mode, but can only manually achieve the backup service load balancing between A and B nodes

When the node a is found through the sms -v command, the status of the IPStor Authentication Module is FAIL. The service of the node A will be from Move to Node B.

unplug the A node power supply, A node's business will automatically switch to the B node

unplug the A node and the backup server network connection, the A node's business will automatically switch to the B node

A, B nodes can work in Active-Active mode, but can only manually achieve the backup service load balancing between A and B nodes

A customer project deploys an 8-node OceanStor 9000 C Node with full front-end and back-end IB networking. The device is powered on and completes all front-end network ports. During customer front-end business switch interoperability testing, engineers will perform Oceanstor 9000 software installation and deployment. What is considered a best practice for this?

The installation of PC directly through the network cable connected to the OM management network switch to complete the software deployment

The engineer thinks the installation PC is connected to NIC1 to complete the software deployment, so connect the installation PC to NIC1

Direct Deployment of Software Without Disconnecting Front End Network and All Network Nodes

Software Deployment Before starting, the engineer configures a temporary back-end IP address on the back end network port B3-0 of the 9000 node (connected to the installation PC)Department DHCP server

The installation of PC directly through the network cable connected to the OM management network switch to complete the software deployment

Which of the following is correct about the OLAP business load characteristics? (multiple choice)

Read operation for sequential read

A single IO is large, the typical value of 64KB ~ 1MB

Read operation for sequential read

A single IO is large, the typical value of 64KB ~ 1MB

Usually data is not overwritten by the cycle or days to measure

When the oracle database is in an open state, which of the following is the correct oracle database recovery action?

roll back to the Council before crying to a certain point in time

open state can not be restored action

A customer production center is in Chengdu with a disaster recovery center in Shenzhen, using VIS 6600T remote replication capabilities to meet the remote disaster recovery. Which of the following about the VIS6600T copy function is correct?

virtual IP and physical IP must be in the same network segment

DCM (data change map) is mainly used to ensure that the data in the production center is copied to the disaster recovery center according to the order sent by the host to ensure the data consistency

Production, disaster recovery data volume and disaster recovery must be consistent, the name can be inconsistent

Each business configuration a copy volume group, multiple copy volume group can use the same virtual IP

virtual IP and physical IP must be in the same network segment

EXT3 is the third-generation extended file system commonly used in the Linux operating system. Which of the following statements is correct regarding the EXT3 file system?

block is composed of a number of consecutive areas, block number starting from 1, the overall number, grouping

Each i node corresponds to a 1GE file or folder, which stores the description file size, file storage location and other information

The block group consists of a number of consecutive blocks, the number within the block group is determined by the block size

The superblock stores the basic information about the EXT3 file system

Which of the following is true regarding IP drift in the Huawei Oceanstor V3 storage system?

When the IP drift mode is set to "Manual", when the port is restored, and the active port link is in a normal state for more than one minute, the system can cut back the service to the main port.

One Ethernet port can create multiple logical ports

If Ethernet ports A and B are added to VLAN 2, by default the ports A and B data are in the same drift group

If binding port A and physical port B join a unified VLAN, as long as there is a physical port in bonded port A, the service will switch to Physical Port B

When the IP drift mode is set to "Manual", when the port is restored, and the active port link is in a normal state for more than one minute, the system can cut back the service to the main port.

What is the correct description of the Huawei Oceanstor 9000 read and write process?

The CA is responsible for initiating the metadata query

If the global cache read hit, read from the global cache without having to go to the OBS to read the stripe data

The CA is responsible for initiating the metadata query

If the global cache read hit, read from the global cache without having to go to the OBS to read the stripe data

Reading data, the MDS is responsible for assembling the slitting data

When writing data, calculate the redundant data by MDS

Backup strategy development principles are based on which of the following (multiple choice)

According to the importance of data measurement data backup frequency

According to the size of the data to measure the data retention period

According to measure the backup bandwidth

According to the importance of data measurement data backup frequency

Measure the backup window based on changes

According to the size of the data to measure the data retention period

According to measure the backup bandwidth

Customer business is very important and has a large amount of data, requiring the best possible business continuity after natural disasters. Which kind of network design is best for this?

In the same city set up two data centers to do double live in another remote data center to do asynchronous remote replication

In the same city set up two data centers to do synchronous replication, located in another remote data center to do asynchronous remote replication

Set up two data centers in the same city to form a dual disaster recovery network

Set up a data center in the local and remote sites to form a dual-active disaster recovery network

In the same city set up two data centers to do double live in another remote data center to do asynchronous remote replication

A company IT system administrator is responsible for the configuration management of OceanStor V3 storage system in Huawei. In the scenario described, which of the following is the correct configuration of Smart Migration:

On Huawei OceanStor V3, configure that thick LUN A and thin LUN B belong to the same controller, and LUN A is the source LUN LUN B is the target LUN

Configure LUN A and LUN B on Huawei OceanStor V3, create a snapshot for LUN A, and then use LUN A as the source LUN and LUN B as the Target LUN

Configure the controllers that belong to LUN A and LUN B to be different on OceanStor V3, with LUN A as the source LUN and LUN B as the target LUN

Huawei OceanStor V3 configures LUN A and LUN B, maps LUN B to a host, and then uses LUN A as the source LUN and LUN B as the target LUN

On Huawei OceanStor V3, configure that thick LUN A and thin LUN B belong to the same controller, and LUN A is the source LUN LUN B is the target LUN

When a Simpana backup client failed to perform the backup task, the status reported the following error "failed to connect to indexing process from client [client] to [MediaAgent * MediaAgent * 8400 * 8402] .Error [Inability to connect to remote machine[MediaAgent] .Please check Network Connectivity or the machine may be down]." You check the client and the media service devices are normal. The possible reasons for this problem are:

The client can not resolve the media server host name

The client JobResults directory is full

The media server IndexCache directory is full

The media server can not resolve the client host name

The client can not resolve the media server host name

Which of the following are false about OceanStor V3 LUN copy and clone: (multiple choice)

LUN copies and clones need to stop the host business during execution

Both LUN copies and clones can be incrementally synchronized

LUN copies and clones have the data of the original volume at the moment when the original data is initiated (or started) for the backup of the original data