SVP needs to be connected to multiple engines through twoPCIe 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.

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

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.

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.

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.

Changethe type of virtual disk created.

P25 Node SSD Hard Drive> P25 Node SAS Hard Drive> P36 Node SATA Hard Drive> P12 SATA Hard Drive> C36 SATA Hard Drive

P25 Node SAS Hard Drive> P25 Node SSD Hard Drive> P36 Node SATA Hard Drive> P12 SATA Hard Drive> C36 SATA Hard Drive

P25 Node SSD Hard Drive> P25 Node SAS Hard Drive> P36 Node> C36 SATA Hard Drive> P12 SATA Hard Drive

P25 Node SSD Hard Drive> P25 NodeSAS Hard Drive> C36 SATA Hard Drive> P36 Node SATA Hard Drive> P12 SATA Hard Drive

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.

True

False

GSLB

VIP

SLB

GLB

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

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

The CA is responsible for initiating the metadata query

If the global cache read hit, read from the global cache without having to go to the OBS to read the stripe data

Reading data, the MDS is responsible for assembling the slitting data

When writing data, calculate the redundant data by MDS

The SIR cluster of the VTL6900 supports global deduplication

The deduplication start time of the VTL6900 can be controlled automatically according to the policy

VTL6900 on the specified tapededuplication and remote replication is recommended at the same time

VTL6900 deduplicated tape to do data archiving, the physical tape library in the NC is still non-deduplicated data

1,7,8,9

1,7,15,24

1,4,8,9

1,5,7,9

True

False

According to the different retention time to divide the media pool

As many media pools as possible to improve performance and utilization

According to the purpose of the disk to partition the media pool

According to the number of storage strategies or use to divide

True

False

Data backup

Data restoration

Data copy

Data deletion

If you use the HyperReplication function to migrate data on multiple LUNs used by the database, you must add multiple remote replication tasks to one consistency group.

The HyperReplication function can implement online data migration.

After data is migrated using HyperCopy or HyperReplication, services can be started without the need to make any configuration on the host.

If data is migrated using HyperCopy, the migration speed can be dynamically changed during the copy process.

hard drive failure

The system detected that CK could not be repaired

Insert the drive within two minutes after being unplugged

IO access returns SECTOR FAULT error

NFS design ideas include stability, security, support for large-capacity storage devices

NTFS will all the data is a file, thefile system metadata is also stored as ordinary files

Each directory and file attribute information is included in the MFT, MFT records the name of the file and directory, size, data storage location information

NTFS file space allocation unit is the sector, the default is 512 bytes

180Mb / s

5.5Mb / s

22.5 Mb / s

5.5 Mb / s

True

False

try to deploy the backup network in the LAN

On theswitch, divide the backup network into separate VLANs

try to avoid the backup network via the routing transmission

GE bandwidth has often been the performance bottleneck backup performance, consider the use of network card binding to increase the backup network bandwidth

Check the compatibility list of the VIS 6000T to determine if all the storage devices are compatible with the VIS6000T

Check the number of fiber switch ports to ensure that each node and switch VIS6000T redundant links

Check if there is enough room for DCO configuration

Confirm that heterogeneous common storage multipathing software and Ultrapath multipathing must be compatible

To improve the reliability of the video data storage device, the user turns on the securevideo feature of the data disk using a 4 + 1 protection level

The user turns on the securevideo feature, with two data corruptions if the data disk uses a 4 + 1 protection level and only 3 for a write operation

Users open the securevideo feature data consistencyscanning, the system does not complete the data files, will be cleaned up

After the user turns on the securevideo feature, the file corruption event has been reported while reading and writing files, and the data recovery failure alarm is no longer reported

True

False

Fabric Server

Fabric Controller server

Name Server

Management Server

Use 3-tier Tier, 1TB high performance layer, 4TB performance layer, 10TB capacity layer, and configure LUN1 to allocate high-performance layer capacity first, LUN2 preferentially allocates performance layer capacity and LUN3 preferentially allocates capacity layer capacity

Use 3-tier Tier, 1TB high-performance layer, 4TB performance layer, 10TB capacity layer, configure LUN1 and LUN2 to migrate automatically, and LUN3 priority allocation of low-performance layer capacity

The use of 3-tier Tier, high-performance layer 1TB, performance layer is 4TB, capacity layer is 10TB,while configuring LUN1, LUN2, LUN automatic relocation. The LUN3 is migrated preferentially to the low-performance layer

Set the monitoring period of the Smart tier to 8:00 to 18:00 every day from Monday to Friday. The migration period is not overlappedwith the monitoring period

controlfile, datafile, pfile

pfile, datafile, controlfile

datafile, pfile, controlfile

pfile, controlfile, datafile

Monitor GAB and check for changes in cluster members

Guarantee a single view of the members of the cluster

In the absence of a single cluster control, to prevent multiple nodes with Volume Manager to access shared storage

cluster abnormal recovery automatically master node

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

oplocks

noguest

fs_mode

hide_unreadable

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

Sys status view system status

Through the dev status view system status

Through the dev status view device management started

Through dev status view device management started

pubs

master

msdb

tempdb

oplock

noguest

fs-mode

hide-unreadable

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 Aand 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

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

Basic rules of retention

Advanced retention rules

Extended retention rules

Special retention rules

VDI application

Database

Mail Service

Seismic geological data

True

False

OLTP

OLAP

VDI

SPC-1

fs create striped fs01 10g 3 RG1-LUN1, RG2-LUN1, RG3-LUN1 stripeunit = 2048 blksize = 8192

fs create mirrored fs02 10g 2 RG1-LUN2, RG2-LUN2 stripeunit =2048 blksize = 8192

fs create mirrored-stripe fs03 10g 2 2 RG1-LUn1, RG2-LUN1 protection = disk stripeunit = 2048 blksize = 8192

fs create striped-miiro fs04 20g 2 3 RG1-LUn1, RG1-LUN2, RG2-LUN1, RG2-LUN2, RG3-LUN1, RG3-LUN2 protection = diskstripeunit = 512 blksize = 1024

True

False

Snapshot file system can be dedicated as a separate space to the client.

For a file system can create multiple snapshots, support snapshotsof the snapshot

Snapshot file system provides only read-only access to external, it cannot provide write operations

File System Snapshot Instantly copy the source file system completely available copy, when due to viruses or man-made misuse and other causes of the original file system is not available, the rollback of the snapshot can restore the original file system.

The mode of operation of the array can be in-controller load balancing or inter-controller load balancing.

Load Balancing Mode Including wheel training algorithm, the maximum queue depth algorithm, the maximum workload algorithm.

After the connection is interrupted between the LUN home controller and the host, the host accesses the LUN through the peer controller. In this case, the over-trail software defaults the switched home controller of the LUN to the remote controller.

When multipath detects a preferred controller failure recovery, the I / O is resumed immediately at the preferred controller by default.

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

10:25

12:00

15:00

15:20

Standalone SAN engine and stand-alone file engine

Parallel dual-stack by way of parallel support (SAN) and file system (NAS)

Use unified storage pool technology

file system can achieve deduplication data compressionfunction