Huawei H13-629_V2.5 HCIE-Storage (Written) v2.5 Exam Practice Test

In File System Snapshot when you create a snapshot, you simply copy the root of the file system and save it to form a snapshot of the file system.

Deletion Snapshots use a mechanism for reclaiming space, so snapshot data space is immediately freed after snapshots have been deleted.

After creating a snapshot in the File System, as the main file system is continuously updated, the original data block will gradually become the space occupied by this quick debt. However, a newly written data will not be included in the snapshot space.

File system snapshot data can not be deleted directly, and only after the snapshot has been deleted, this part of the space can be released.

can only be opened when creating a file object, business can not be opened or closed during data deduplication and compression function

Using online processing to deduplicate data before it is written to disk

When both deduplication and compression are turned on, the data will be deduplicated and then compressed

Use smart cache can accelerate the search performance of fingerprints deleted

True

False

True

False

True

False

1KM

10KM

25KM

50KM

1,7,8,9

1,7,15,24

1,4,8,9

1,5,7,9

Correct

mistakes

Does not support the system disk backup and recovery operations

When enabling the snapshot-based backup mode, the NDMP backup feature requires the file system to support snapshots. Otherwise, the backup task can not be successfully performed.

Based on the snapshot backup, snapshots are created for the current directory. Because the extended attributes of the current directory receive the snapshot protection, the current directory extended attributes will be backed up.

Does not support the system time zone or other time-related adjustments, does not support daylight saving time.

True

False

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

127.0.0.1 localhost129.22.221.200 cluster-scan129.22.221.201 node1129.22.221.211 node1-vip192.168.222.211 node1-priv129.22.221.202 node2129.22.221.212 node2-vip192.168.222.212 node2-priv

127.0.0.1 localhost129.22.221.200 cluster-scan129.22.221.201 node1129.22.221.211 node1-vip192.168.222.211 node1-priv129.22.221.202 node2129.22.221.212 node2-vip192.168.221.212 node2-priv

127.0.0.1 localhost129.22.222.200 cluster-scan129.22.221.201 node1129.22.221.211 node1-vip192.168.222.211 node1-priv129.22.221.202 node2129.22.221.212 node2-vip192.168.222.212 node2-priv

127.0.0.1 localhost129.22.221.200 cluster-scan129.22.222.201 node1129.22.221.211 node1-vip192.168.222.211 node1-priv129.22.221.202 node2129.22.221.212 node2-vip192.168.222.212 node2-priv

oplock

noguest

fs-mode

hide-unreadable

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

Basic rules of retention

Advanced retention rules

Extended retention rules

Special retention rules

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

Read operation for sequential read

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

No IO write operation

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

The engineer has set the WORM root directory according to the hospital's requirements, and all the subdirectories under this directory have the WORM attribute.

During the file protection period, no one can delete the protected file.

Protected Documents are Protected for a Period of 70 Years on Huawei OceanStor 9000 Storage Device.

WORM log save root, quota and WORM protection period cannot be set.

When using the InfoEqualizer function, you need to configure DNS. If you use an external DNS server, when configuring the DNS server, there is a setting of "reverse lookup zone name", network ID setting in this tab, you need to input network ID in reverse order.

When there is a DNS server in the user network, the DNS server in the user network does not need to configure the forwarding record. When the user network without DNS service server, configure the InfoEqualizer DNS IP address as the DNS server's address on the client.

The root domain name is the domain name InfoEqualizer configured for the cluster. This domain name must be configured as the fully qualified domain name, that is, the domain name that includes the root node.

The domain name of the partition is configured as the relative domain name, and the root domain name of the InfoEqualizer is automatically taken as the suffix of the domain name, and the full name of the domain name is formed with maximum support of 32 partitions.

When smart LUNs act as backup media, smart tier's performance improvement on this LUN is not obvious.

During the running of the business, the extent size can be adjusted by the size of the hotspot area to obtain better performance.

Literacy ratio in the 1:9 scenario, enabling the smart tier has greatly improved the performance of the business.

Smart tier has no effect on host performance during hot data migration.

True

False

The storage is connected directly to the virtual machine, including RDMs, directly to iSCSI or NFS.

Virtual machines contain large databases.

The virtual machine is deployed in the AIX operating system.

Virtual machines contain non-Microsoft family applications.

TCP Header

IP Header

ISCSI Header

ISCSI data

Support for SMB3 multichannel features that take full advantage of client-side multi-core CPUs and bandwidth resources to dramatically improve performance.

When a hard drive has multiple objects at the same time to write requests, support merged into a large continuous IO, significantly improve system performance.

Internal file system replication, without having to go through the client directly in the system to complete high-speed

Supports 10GE and PCIE networking, providing high performance through high-speed inter-node interconnection and reducing system internal delay.

Hard drive capacity

Metadata space size

Hard drive type

RAID type

Stop the current production business

Add the remote device to the original production array

With the disaster recovery array as the master LUN and the original production array as the slave LUN, create the remote replication relationship between the DR and the production end and wait for the initial synchronization to be completed.

Make an incremental synchronization.

Delete the original production array consistency group.

The hard disk is divided into chunks.

Lun consists of extend or grain

A CKG chunk may come from the same hard disk.

Chunk in a CKG may come from a different storage pool.

The namespace is automatically created when HUAWEI OceanStor 9000 is started with the same name as the system namespace.

Namespaces as the root directory of the entire system can not be shared and visited, only if ask the subdirectories below it can be shared and visited.

A unified namespace provide users with a unified storage resource pool to achieve the centralized management of storage space and distribution.

Each file share directory is a subdirectory of the namespace.

96

4

32

12

True

False

Reduce the number of snapshots.

Reduce the number of virtual machines per LUN.

Increase the number of LUNs and limit the number of hosts accessing the same LUN.

Change the type of virtual disk created.

Pause the app before the snapshot, go to the hardware storage snapshot to trigger a common snapshot with application consistency.

Backup software snapshot function can automatically find the storage volume of the file system, database, mail system.

Background snapshots can be indexed to ensure application recovery and small particle recovery.

Snapshots backup can be offline, the backup server almost has no impact.

The disaster recovery side to create a snapshotMap the snapshot to the disaster recovery hostDisaster Recovery Host scans the diskStart disaster recovery applicationTest disaster recovery applications

Forcibly switch the replication relationshipMap lunStart disaster recovery applicationTest application started successfullyResume production business

Stop production application and dismiss the host mappingSwitch the replication relationshipMap lunStart disaster recovery applicationTest application started successfully

Release the host mappingSwitch the replication relationshipMap lunStart disaster recovery applicationTest application started successfully

SVP needs to be connected to multiple engines through two PCIe switches, and each engine controller needs to be connected to a PCIe switch to ensure that link redundancy and to improve reliability.

When the control plane is connected to a network, when the engine and the PCI-e switch are interconnected, the port 0, port A3 and PCIe port can be interconnected.

Huawei slot 0 and slot 5 of the OceanStor 18000 engine enclosure can be used to install SAS interface modules and interconnect disk enclosures.

Because computing tasks are designed for large file services, it is more appropriate to deploy with an 8-node OceanStor 9000 C node. The capacity on the use of 4TB SATA, to meet customer needs

Using Oceanstor 9000 C Node combined with the total bandwidth and total capacity requirements, consider the 8-node configuration 4TB SATA full disk, backend 10GETOE + front-end IB networking

From the reliability point of view, it is recommended to use the InfoEqualizer function to access the OceanStor 9000 storage through a domain name. The InfoEqualizer DNS segment needs to be considered and OceanStor 9000 back-end to interoperability

OceanStor 9000 supports front-end 10GE TOE + back-end IB networking, the front-end is easy to log in and manage with the management PC interworking, considering this networking solution can reduce the cost of front-end IB switches.

Quota Tree can share through the agreement, and when it is being shared, it is not allowed to rename and delete.

Can operate across Quota Tree's move files (NFS protocol) or cut files (CIFS protocol).

A hard link between two different Quota Trees is allowed.

No hard link between two different Quota Trees is allowed.

TRUE

FALSE

One Ethernet port can be used to create multiple logical ports

If you type Ethernet ports A and B into VLAN 2, by default the port A and B data are in the same drift group

If binding port A and physical port B are added to the same VLAN, as long as one physical port in bonded port A fails, the service switches to Physical Port B

When IP Fallback mode is set to Manual, when the port fails to recover, the active port link is in normal status and lasts longer than 1 minute, the system can switch the service to the primary port

Multiple LUNs for Customer Business. When implementing data migration using remote replication, you need to add multiple remote replication tasks to a consistency group

Use remote replication to complete online data migration

LUN copy or remote replication. After the migration is complete, you do not need to do any configuration on the host to start the service

LUN copy data migration. During the copy process, you can dynamically change the migration rate

Use the Client properties in the job configuration

By configuring the ValutTracker strategy

In the control panel data Interface pair configuration

Use data IFPaires.exe to configure multi-stream concurrent DIP

Parameter file

Control Documents

archive log file

Data files

When an IO arrives at the storage system, in order to avoid affecting the write performance, the data in the smart cache will not be any changes due to the IO

When reading the data in the missing smart cache, the smart cache pool directly forwards the read IO request to the HDD

If OceanStor V3 is shared between services A and B, the same custom smart cache partition can be used

The system generates a default smart cache partition for each controller by default

acbde

baced

abcde

eacbd

True

False

TRUE

FALSE

scale-out: storage resources on-demand expansion, increase the engine to achieve performance, linear increase in capacity

Full Exchange: The use of PCIE1.0 full switching interconnect, providing sufficient switching bandwidth to meet the stringent performance requirements

Inherent Load Balancing: The controller is alive and well-balanced load sharing to improve storage resource utilization

Full redundancy: Redundancy of all components, intelligent switchover of component failures to meet stringent business continuity requirements

Run / usr / bin / readvgcla-V dhbvg -F status on node A and run / usr / bin / putvgda_V dhbvg -a on node B.status = 1

Run / usr / sbin / rsct / bin / dhb_transmit hdisk8 on Node A and run / usr / sbin / rsct / bin / dhb_receive on Node Bhdisk8

Run / usr / sbin / rsct / bin / dhb_read-p hdisk8 -r on node A, / usr / sbin / rsct / bin / dhb_read-p hdisk8 -t

Run echo 1 | / usr / bin / dd of = / dev / rhdisk10 bs = 4k skip = 2 count = 1 on Node A and run on Node Bcommand / usr / bin / dd if = / dev / rhdisk10 bs = 4k skip = 2 count = 1

Data is written into N data blocks of the same size

Yu calculate M check blocks (N=+M) by Erasure code algorithm for every N consecutive data blocks

The system stores N + M data blocks in parallel on different hard disks

In re-Erasure Code storage mode, the system supports up to N hard disk failure

City Ethernet, asynchronous data replication

City FC network, synchronous data replication

Off-site Ethernet, asynchronous data replication

remote FC network, synchronous data replication

vMotion, Storage DRS

Storage vMotion, Storage DRS

vMotion, HA

vMotion, Storage vMotion

True

False