H13-629 HCIE-Storage (Written) Questions and Answers

Source LUN: 1 and 3Destination LUN: 2 and 4

Source LUN: 1 and 4Destination LUN: 3 and 2

Source LUN: 3 and 1Destination LUN: 4 and 2

Source LUN: 2 and 4Destination LUN: 1 and 3

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 theInfoEqualizer 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.

TRUE

FALSE

Before establishing a shared connection, establish a session andthen negotiate the agreement

establish a shared connection before the file operation

in the agreement negotiation stage for safety certification

file operation is completed, does not require client requests, the server will automatically disconnect the shared connection

True

False

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 offthe 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 ofdata 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

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 bothdeduplication and compression are turned on, the data will be deduplicated and then compressed

Use smart cache can accelerate the search performance of fingerprints deleted

LDAP authentication

WSSE certification

NIS certification

AD domain certification

Log in to the management software or the CLI to check whether the controller is online. If it is not online, restart the controller B on the CLI, and observe the startup status and recordStart the abnormal interface and crude without

landing management If you press or CLI to check whether the controller is online, if not online, unplug the controller, through the CLI to observe the start-up status, record KaiAbnormal interface and error

Serial connection to the controller, COM1 port without printing, can be judged as controller failure, need to be replaced

Log in to the management software or CLI to check whether the controller is online, if it is not online, execute restsys, restart the current controller, and observe through the CLIDynamic state, recording abnormal interface and error

Increase log cache.

Migrate the log file to the high performance layer.

Increase the number of log groups.

Increase the concurrency and throughput for archiving the log file.

Backup slice size is unlimited, but its size can be set by maxpiecesize

The backup piece is abinary file used to store the backup set information

One or more backup pieces form a backup set

A backup piece corresponds to a separate input output file

The host operating system version is AIX

Fiber switch manufacturer model brocade 300, version v6.3.1a

Storage vendor HITACHI, model number and version ASM 2500,0897 / H-Z

The host HBA card manufacturer and model: Emulex LPe11002

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 dueto 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

For the "configuration operating system failed" error, check the node / var / log partition and clean up the partition, initialize the system, and then re-run the software deploy

If it is not a failure, restart the deployment after reinstalling the deploy deployment package

After the deployment fails, run the sh /opt/huawei/deploy/script/clean.sh command on each node to initialize the system and restart the software department

After deployment abnormalities, reboot all nodes, reinstall oceanstor tookit, and start the software deployment

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 Bare 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

controlfile, datafile, pfile

pfile, datafile, controlfile

datafile, pfile, controlfile

pfile, controlfile, datafile

Data backup

Data restoration

Data copy

Data deletion

GE LAN-free

10GE LAN-free

FC LAN-free

server-free

City Ethernet, asynchronous data replication

City FC network, synchronous data replication

Off-site Ethernet, asynchronous data replication

remote FC network, synchronous data replication

When a file is in the locked state, the file protection duration can be manually prolonged or shortened.

A locked file will shift to the expired state if the file system WORM clock value is greater than the file atime value.

After the WORM file system compliance clock has exceeded the file expiration time, an appending file will shift from the appending state to the expired state.

Only files of 0 byte can shift from the locked state to the appending state.

True

False

FC InfiniBand SAS PCI-edouble can be a carrier of the SCSI protocol

InfiniBand Transmission Speed "FC Transmission Speed" iSCSI transmission speed

FCoE technology for GE and 10GE Ethernet

FCoE SAS InfiniBand has its ownswitch product

VM NIC adapter error

The media server backup service is abnormal

The backup client service is abnormal

Virtual machine disk class behavior IDE

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 connectedto the OM management network switch to complete the software deployment

The backup server and the ring server can not communicate properly

The link between the backup server and the media server is faulty

Backup server SQL database failure

DDB is abnormal

True

False

Direct use of the root user, in the case ofthe 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 rootuser, perform a fsck fix on the device while the file system is unmounted

Both VSA and MA are installed on the virtual machine.

VSA MA ISE are installed on the physical machine.

VSA is installed on the virtual machine, and the MA is installed on the physical machine.

Both VSA and MA are installed on the physical machine.

The production system equipment network card occupancy rate is high.

The production system equipment network card occupancy rate is low.

The production system equipment CPU occupancy rate.

The production system equipment CPU occupancy rate is low.

To prevent changes in the directory or file protection time because of thechanges in cluster time, a directory or file is configured with WORM attributes. After the directory or file will use the WORM clock to time, set the WORM clock. When the system will be based on the clock, user’s file will not be modified over the protection period.

If the cluster time is earlier than the WORM clock, the WORM clock will be chased every hour for up to 138 seconds to adjust. If the cluster is after the WORM clock, the WORM clock adjusts to the cluster time.

When a directory is configured as a WORM root directory, all subdirectories, new directories and new files in the directory automatically get the parent directory of WORM attributes. These attribute parameters can only be configured when the WORM root directory is set. Only then the user’s view can not be modified.

WORM logs are used to record the logs related to WORM operations and record them according to the time. The monthly log is a file that can be modified and can delete the file.

True

False

True

False

The customer needs to provide 16 IP addresses for Oceanstor 9000 system back-end IP and need to provide a gateway.

Customers need to provide nine management network IP addresses, of which eight for IPMI management, one for OM management.

The customer management network must be interoperable with the OceanStor 9000 InfoEqualize DNS IP to access the OceanStor 9000 storage.

The client needs to provide 49 IP addresses that can interoperate with client applications, 16 for the static front end, 32 for the dynamic front end, 1 for InfoWqualizer DNS IP.

True

False

2TB NL-SAS hard drive, 8D + 2P RAID6 configuration

With 2TB NL-SAS hard disk, configure 8D + 1P RAID5

600GB 15Krpm SAS hard drive, 8D + 1P RAID 5 configuration

Configure raid 10 with 600GB 15rpm SAS hard disk

Check if the size of the migrated file is the same as the original data.

Check if the number of documents corresponds to the original data

Check if each file with read and write permissions corresponds to the original data

Whether the time for reviewing the case file corresponds to the original data.

Hard drive capacity

Metadata space size

Hard drive type

RAID type

can not sit down

vgchange

vgexport mkdir mknod vgimport

vgremove mkdir mknod vgcreate

Recommended threshold 10GBSoftware threshold 15GBGrace time 10 daysHard threshold 20GB

Recommended threshold 10GBSoftware threshold 18GBGrace time 10 daysHard threshold 20GB

Recommended threshold10GBSoftware threshold 15GBGrace time 15 daysHard threshold 20GB

Recommended threshold 8GBSoftware threshold 15GBGrace time 10 daysHard threshold 20GB

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.

In addition to path failover, multipathing also provides load balancing. Load balancing is the process of distributing I / O load across multiple physical paths.

In the event of a path failover, the virtual machine I / O delays Nintendo pump by 60s.

If the failover takes a long time to complete, the windows virtual machine may interruptthe I / O and eventually fail. To avoid this, set the windows virtual machine timeout to at least 30 seconds.

When coordinating vmware NMP and any installed third-party MPP, the PSA (Pluggable Storage Architecture) performs load and unload multipathingplug-ins and handles physical path discovery and removal.

You can plan back-end storage network for 9000 internal communications, without planning gateway address, and front-end network with the same network segment IP address.

Oceanstor 9000 front-end network and management network can be considered together, planning for the same network segment.

Back-end CE6850 switches need to use four stacked cables for stacking connection to ensure bandwidth requirements

The external NTPserver address and the Oceanstro 9000 front-end network need to communicate to ensure that the oacenstor 9000 system and client applications maintain time synchronization.

rm delete file operation

mkfs. ext3 format file system operation

dd command

Continue to write new data to the file system after the file system is damaged

True

False

When smart LUNs act as backup media, smart tier'sperformance 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.

If the system has monitored the file X hasbeen cached on Node B, the client client1 can read the file directly from Node B.

If the system monitors that node B has cached file X, then node A can read the file from node

After HUAWEI OceanStor 9000 processes the request for reading the file X from client1, the system reserves the message on both node A and node B.

If the system monitors that node A has cached file X, then node A only caches the data of file X and does not cache its verification data

vg01

vg02

vg01 vg02

empty

VxFS is a non-log file system that can support morethan 2T files.

File system snapshot using copy-on-write (copy-on-write technology) and other files together, share partition or volume storage space.

Provide file system-level snapshots, copy.

File System Snapshots, Scenarios, Replication, etc. Features are based on Storage Checkpoint.

Program One:1 * OceanStor 9000 C Node36 * 2TB SATA configuration2 * Front-end GE + 2 * Rear-end 10GE

Scenario 2: 3 * Oceanstor 9000 C Node36 * 2TB SATA hard drive;2 * Front-end GE + back-end 2 * 10GE

program three:3 * OceanStor 9000 P Node36 * 2TB SAS configuration2 * Front-end GE + 2 * Rear-end 10GE

Program Four:3 * OceanStor 9000 M Node36 * 2TB SAS configuration2 * Front-end GE + 2 *Rear-end 10GE

Read and write strategies include permanent, default, recycling.

Recycling strategy is suitable for business scenarios that require high performance and small amount of data.

Select out the recycling strategy when the data or write data is the lowest priority.

Resident strategy is suitable for large read and writedata, and read-only scenes.

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.