H13-622 Huawei Certified ICT Professional-Constructing Cloud Storage Solution Questions and Answers

VxVM

VCS

VxFS

SFS

Fibre Channel disks

SAS disks

SATA disks

SSDs

True

False

Eachservice network port, management network port on an engine node, and management network port on a storage unit must have a physical IP address.

Each service network port and management network port on an engine node must have a virtual IP address.

Ensure that the physical IP address and virtual IP address of each port reside on the same network segment.

It is recommended that the console IP address reside on the same network segment as the service network.

Afile system has at most 10 million files.

A directory has at most 10,000 files.

A file system has at most 10 levels of directories.

A file system has at most 10,000 directories.

FAT32

NTFS

NFS

CIFS

Evenly distribute service loads among all cluster nodes, Employ port bonding to increase network bandwidths and enhance protection capability.

Plan the types of file systems for the storage system based on the performance and data integrity requirements of customers' environments.

Plan various RAID groups for the storage system to address the data integrity and read/write performance requirements of different application scenarios.

Select operating systems based on application requirements.

File system layer

Application layer

User management

Operating system layer

NIC

Hashadow

Disk

IP

RAID1

6+3

6+4

6+5

Huawei big data storage products support InfiniBand/lOGE/GE networking modes.

Huawei big data storage products employ scale-out architecture.

Huawei big data storage products are based on the MPP DB.

Huawei big data storage products support dynamic storage tiering (DST).

AD domain

LADP domain

Local certification

Global authentication

NIS certification

Local user authentication

AD domain user authentication

NIS domain authentication

LDAP authentication

When the used space occupies 85% of the total storage space of the node pool, the data can still be written to the node pool.

When the used space accounts for 90% of the total storage capacity of the node pool, the data can still be written to the node pool.

When the used space accounts for 85% of the total storage capacity of the node pool, the system reports a read-only alarm.

When the used space accounts for 90% of the total storage capacity of the node pool, the system reports insufficient capacity alarm.

NIC

Hashadow

Disk

IP

WORM files can be modified and deleted

The WORM clock can only be set once. After the setting is successful, the change is no longer allowed.

When a directory is configured as a WORM root directory, all subdirectories, new directories, and new files of the directory are automatically obtained from the parent directory.

WORM attribute

WORM protection submission method only supports automatic submission

OBS (Object-Based Store) provides reliable object storage for file system metadata and file data

CA (Chent Agent) is responsible for semantic analysis of application protocols such as NFS/CIFS/FTP and sends it to the underlying module for processing.

Snapshots, tiered storage, remote replication and many other value-added features are provided by the PVS module.

MDS (MetaData Service) manages the metadata of the file system, and each node of the system stores the metadata.

Global Cache in WushanFS logically forms an overall memory resource pool on the memory space of all storage servers.

The data in the cache of a node cannot be hit by the read and write operations of other nodes.

Global caching technology helps to improve node memory resource sharing

WushanFS uses distributed locks to implement global cache data management. The same service data is only cached in one node, when other nodes need

To access the data, obtain the cached data by applying a lock.

2U

Up to 12 service disk slots

Applicable to scenarios requiring large capacity

Standardconfiguration:2 x 6-core CPUs

True

False

True

False

Accessible storage array

File system

Interface provided for other devices to access the file system

Fibre Channel switch

Front-end service network

Back-end storage network

Internal communication network

IPMI management network

Equivalent to RAID 01, Mirrored-stripe is to perform file system mirroring based on striping, A mirror provides data redundancy, and data is distributed across multiple disks.

Mirror is equivalent to RAID 1, Data that needs to be written to a file system is simultaneously written to two mirrors and data is read from the two mirrors based on a round- robin policy (I/Os are evenly distributed to paths in a round-robin manner).

Regarding the use of Mirror, it is recommended that the space of the source file system be provided by one storage array and that of the mirrored file system be provided by another. Mirror is recommended for scenarios that require high reliability.

Mirrored-stripe is suitable for scenarios that require high reliability. The performance of Mirrored-stripe is the same as that of Mirror.

The agent monitors the resources of each system and provides the status information for the HAD of each machine.

If a cluster node is abnormal or faulty, the HAD takes correct actions, for example, performing a failover.

The GAB implements a point-to-point communication mechanism. The master node sends the other cluster nodes the information that needs to be synchronized.

LLT is a MAC-layer protocol unrelated to IP layer.

A snapshot and the file system each use independent storage space to ensure data reliability.

A file system snapshot is a view identical with the file system.

File system snapshots are readable, writable, and independent of the file system.

You can create multiple snapshots for a file system. However, you cannot create a snapshot for an existing snapshot.

17

18

19

20

CIFS transmits data based on TCP.

CIFS transmits data based on UDP.

CIFS is a file sharing protocol used on Linux.

CIFS is a file sharing protocol used on Windows.

Alarm information

Operations performed after the fault occurred

Clustered NAS configuration information

Number of storage unit disk enclosures

Evaluate the feasibility of the performance target based on your experience.

Use a fixed testing environment for performance optimization.

Determine the testing mode based on services to ensure the comparability of the test results.

Performance optimization has no impact on ongoing services. You do not need to worry about the pressure on services.

True

False

True

False

Go to the welcome page. > Confirm the networking. > Select a configuration file. > Configure storage units. > Configure the NA5 engine. > Configure the device location. > Complete the deployment.

Confirm the networking. > Go to the welcome page. > Select a configuration file. > Configure storage units. > Configure the NAS engine. > Configure the device location. > Complete the deployment.

Confirm the networking. > Go to the welcome page. > Configure storage units. > Select a configuration file. > Configure the NAS engine. > Configure the device location. > Complete the deployment.

Confirm the networking. > Go to the welcome page. > Select a configuration file. > Configure the NAS engine. >Configure storage units. > Configure the device location. > Complete the deployment.

The mini-capacity node applies to small-capacity scenarios.

The performance node applies to large-capacity and high-bandwidth scenarios.

The capacity node applies to OPS-intensive scenarios.

None of the above is correct.

The node types in the node pool must be the same

If it is an OPS-intensive application scenario, it is better to configure P nodes in the node pool.

When a node pool is composed of P nodes, there is a minimum of 3 nodes in a node pool.

TRUE

FALSE

Power module

Online replacement of the hard disk

Cable (or optical module)

IO module

Oceanstor 9000 metadata is mirrored for redundancy and COW technology for metadata

InfoStamper feature provides file-level-based snapshots

Oceanstor 9000 InfoStamper uses ROW technology

The advantage of using ROW is that it has less impact on system performance.

Regularly check and audit the login and operation logs of various accounts.

Routinely check whether the permissions of various accounts are reasonable

Routinely check if the temporary account has been deleted

Cabinet-->Switch-->KVM--->Node

Cabinet --> KVM --> Switch ---> Node

Cabinet --> Switch --> Node ---> KVM

Cabinet --> Node --> KVM ---> Switch

TRUE

FALSE

An application that writes multiple times at a time

Institutionalized data form processing

Massive small file storage and retrieval

Massive document management that changes content frequently

TRUE

FALSE

Component innovation capability

Engineering service support capabilities

Solution configuration capabilities

a switch

b switch

c switch

The heartbeat network of the clustered NAS engine is correctly connected to the heartbeat network.

The clustered NAS engine service network port is not connected to the client service network before the configuration is completed.

The clustered NAS engine is powered on correctly and the indicator status is normal.

The clustered NAS engine node has completed hardware installation and cabling

T

F

Volume- huge amount

Variety-diversity

Value-value density

Velocity-speed

Cabinet -> Switch -> KVM -> Node

Cabinet -> KVM->Switch->Node

Cabinet -> Switch -> Node -> KVM

Cabinet -> Node -> KVM -> Switch

The Oceanstor 9000 system can configure different data protection levels for different directories/files.

When writing data to the Oceanstor 9000 system, it will first divide the Chunk by size.

For every N chunks, the check block of M chunks is calculated according to the ErasureCode algorithm.

The utilization of the protected data space is about N/(N+M), and the reliability of the data is determined by the M value. The larger the M, the higher the reliability.

Volume- huge amount

Variety-diversity

Value-value density

Velocity-speed

Transfer data based on TCP protocol

Transfer data based on UDP protocol

Linux platform file sharing protocol

Windows platform file sharing protocol

Business disaster tolerance

Data distribution

Slave data access

Protection of file data

Snapshot

worm settings

Protection of metadata

Data recovery

Physical domain

6+1

4+2

6+4

12+2:1

FAT32

NTFS

NFS

CIFS

TRUE

FALSE