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The file sharing excuse provided by the Huawei 0 ceanstor 9000 system does not include which of the following options?

A.

Object

B.

NFS

C.

CIFS

D.

FTP

Which of the following options are the shortcomings of HDFS components? A. Remote replication feature is not supported

B. Low hardware fault tolerance

C. File system performance bottlenecks are likely to occur under large-scale deployment

D. Low capacity utilization and high cost

Single-select a Huawei Oceanstor 9000 cluster site, configure 4 P36 nodes, and use the back-end IB networking, regardless of temporary conditions.

In this case, how many back-end storage network IP addresses should be planned?

A.

4

B.

8

C.

16

D.

24

In Oceanstor 9000, if the data protection level is set to 4+2, the corresponding metadata will generate 3 copies of the same Of the mirror.

A.

True

B.

False

Single-choice through Huawei Oceanstor 9000 DeviceManager, we can view the real-time OPS performance indicators of the system.

A.

True

B.

wrong

The following description of the cache in Huawei 0 Ceanstor 9000

Which one is wrong?

A.

The first level cache is the read cache of the storage node, and the location of the global cache is in the first level cache

B.

The second level cache is used to cache the hot data of this node. At the same time cache the hot data of the same node and other nodes

C.

The second-level cache is composed of SSD disks, if there is no SSD disk in the node, there is no second-level cache

D.

The telegram cache (NVDIMM) is mainly used as a write cache.

During the offline upgrade of Huawei Oceanstor 9000 software version, there will be a single selection of interrupt service operation, and the service interruption time depends on the upgrade.

execution time

A.

True

B.

False

Single-choice NAS storage system realizes file system sharing, and the underlying protocol uses iSCSI for data transmission

A.

True

B.

False A InfiniBand technology has high bandwidth, low latency, and system scalability

Which of the following options does not belong to the single-selection structure of Huawei's distributed storage network architecture

A.

Management network

B.

Back-end storage network

C.

Tenant Network

D.

Cluster storage network

There are two businesses A and B in the storage system of an Internet company.

resource. This leads to longer time for other businesses. Among them, business is a transaction processing application, B business is an analytical query application,

Need to ensure the immediate response of A business. In order to solve this problem, the engineer assigned that the QOS of the A service is higher than the service.

A.

True

B.

False

Multi-selection After launching Oceanstor 9000 deployment, the deployment tool interface prompts "Unsuccessful connection". The possible reasons are: (multiple-selection)

A The deployment tool and deploy version do not match

B. The network connection between nodes is unstable

C. deploy process does not exist

Adjust the TCP parameters of LINUX clients accessing Huawei Oceanstor 9000 cluster to improve access performance.

Under the network, it is recommended to increase the size of the TCP sending and receiving buffer area to the following value, net.ipv4.tcp_rmem='4000000 8000000

16000000'net.ipv4+tcp_wmem='4000000 8000000 16000000'

A.

True

B.

False

Regarding the HyperMetro static priority arbitration mode, the correct one is:

A.

The static priority mode has higher reliability than the quorum server mode.

B.

When an inter-array link failure occurs, or a non-priority site fails, the LUN on the priority site continues

Services will continue to be provided, and LUNs at non-priority sites will cease to provide services.

C.

When the priority site array is powered off for maintenance, the non-priority site array immediately takes over all active-active businesses

The business will not be interrupted.

D.

When the priority site array fails, the non-priority site will automatically take over the active-active service.

The fully balanced (Active-Active) multi-choice architecture of Huawei's all-flash storage guarantees a securities company

Transaction business at high concurrency. Regarding the architecture, which of the following statements are correct

A.

Distribute IO evenly to all front-end ports to achieve load balancing of access

B.

All controllers participate in business processing, LUNs have no ownership, and controller load balancing is realized

C.

IO is evenly distributed to all controllers, realizing front-end load balancing

D.

Data balance is distributed to all SSDs, realizing disk load balance

During the maintenance of the Huawei Oceanstor 9000 system, a dedicated person is required to keep the system root password. Pay attention to the password when passing the password.

Try to avoid sending passwords via email.

A.

True

B.

False