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If a company uses an OLTP database, which migration strategy is suitable for SmartTier?

A.

No migration

B, automatic migration

B.

Migration to high-performance layer

C.

Migration to the low-performance layer

What conditions should be considered for device backup bandwidth? (Multiple choice)

A, the size of the initial data

B. The daily quantity increment

C. Backup cycle

D. Backup staff

OceanStor V3 series storage can only support iSCSI or FC host links separately, not both

Connect to the network.

A.

TRUE

B.

FALSE

The following are the advantages of SSD hard drives compared with mechanical hard drives. The description is correct: (multiple choices)

A.

No high-speed rotating parts, high performance

B.

Support TCQ/NCQ, corresponding to multiple IO requests

C.

SSD disk at a time is more suitable for use in scenarios that require large storage capacity

D.

SSD can be used in some harsh environments, such as high temperature and humidity, strong earthquakes and other harsh environments.

The following are the key characteristics of cloud computing:

A.

users can self-service on demand

B.

The resource pool used by the user has nothing to do with the exact geographic location of the resource pool

C.

It can quickly and flexibly provide users with capabilities, such as computing power and storage capacity.

D.

Charge based on the actual usage of the user

The following description of common storage protocols is correct?

A.

The ATA protocol uses a parallel interface, which can only be built-in and requires cable length

B.

The SCSI protocol does not support hot swap

C.

A SAS domain can connect 15 devices

D.

FC protocol has good compatibility and long transmission distance

Description 1: A RAID consisting of several hard disks is called a physical volume.

Description 2: RAID 5 can improve the read and write rate and provide a certain degree of data security, but when there is a single hard disk failure

At this time, read and write performance will be greatly reduced.

A.

Description 1 is correct, description 2 is correct

B.

Description 1 is correct, description 2 is incorrect

C.

Description 1 is wrong, description 2 is correct

D.

Description 1 error, description 2 error

A company has sufficient client server resources, but network resources are tight. Which deduplication strategy is suitable?

A, file-level deduplication

B. Byte-level deduplication

C, source deduplication

D. Deduplication on the target side

The data center is an infrastructure built for accessing and carrying server services. According to the business, the data center can be

Divided into: (multiple choices)

A.

Cloud data center

B.

Enterprise data center

C.

Carrier data center

D.

Internet Data Center

Which of the following is not a backup type?

A.

Full backup

B.

Cumulative incremental backup

C.

Differential incremental backup

D.

real-time backup

Regarding the characteristics of the four disaster recovery modes of active-active, hot standby, warm standby, and cold standby, what is wrong in the following statement?

A.

The data center using cold standby mode has a long RTO and is unpredictable

B.

The data center adopting the HyperMetro mode has the shortest RTO time

C.

When a data center failure causes the service to become unavailable, the hot standby and active-active modes can be automatically switched by software

Services, while the warm standby mode requires manual intervention, and the cold standby mode requires manual intervention

D.

Hot standby mode requires the highest software cost

Regarding the steps of SAN synchronous replication, what is the correct order?

(1) The production storage receives the host write request. HyperReplication logs the request. Only the place is recorded in the log

Address information, without recording data content.

(2) HyperReplication waits for both the primary LUN and secondary LUN write processing results to be returned. If both are written successfully, clear

Log; otherwise keep the log, enter the abnormal disconnection state, and then copy the corresponding number of the log address again when starting synchronization

According to the block.

(3) Write the request to the master LUN and slave LUN. Normally, the LUN is in the write-back state, and the data will be written

Cache.

(4) Return the processing result of the host write request, which is subject to the processing result of the write master LUN.

A.

(1) (3) (2) (4)

B.

(1) (2) (3) (4)

C.

(2) (1) (3) (4)

D.

(4) (2) (3) (1)

Xiao Wang, an employee of a company, did the following in the company's storage system: 9:00 Take a snapshot of LUN A and activate it

Alive, all the data of the snapshot LUN and the source LUN were modified at 10:00, and the snapshot was rolled back at 11:00.

The following instructions are correct? (Multiple choice)

A.

The data in the copy space before COW is 9:00 LUN A

B.

The data in the copy space before COW is 10:00 LUN A data

C.

The data of the source LUN is the modified data at 10:00

D.

After the snapshot is rolled back, the data of the source LUN becomes the data of the modified snapshot LUN at 10:00

A host connected to a switch port cannot belong to multiple zones, but can only be divided into a zone

in.

A.

TRUE

B.

FALSE

FCoE is a transmission protocol standard that encapsulates frames in FC in lossless Ethernet and is used to form storage networks

Network.

A.

TRUE

B.

FALSE