H13-629_V2.5 Questions and Answers

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

For a file system can create multiple snapshots, support snapshots of 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.

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.

Pvmove command does not support Linux cluster.

Redhat Linux enterprise 6 version of lvm does not support the pvmove command.

You need to install the cmirror package and run it on the cluster server.

Need to lvm version down to 1.0 before using pvmove migration data.

Create a site discovery store, find the host registration store, register the host to create a protection policy.

Discovery Store, Discovery Host Registration Store, Register Host Create Site Registration Store Create Protection Group Create Protection Policy.

Found storage, found that the host to create a site registration store, register the host to create a protection group to create a protection strategy.

Create a site registration store, register the host to create a protection group to create a protection policy.

Client corresponding partition insufficient space

Client One or more simpana services are not started

The storage policy checked enable managed disk space for disk library option, leading to the disk's thresholds from the effectively managed disk space.

The client is abnormal with cs or MA communication.

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.

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 compression function

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.

4940G

4280G

5940G

5280G

When configuring the backup client on the VTL side, you need to know that the WWPN of the FC port that connects the VTL to the VTL is available on the server in the sys /class / fc_host directory and subdirectory to the corresponding WWPN port.

Server-side identification has been detected with the library device command is cat / proc / scsi / scsi.

As shown in the figure, among the devices identified on the server side, the device labeled 1 is the scanned library.

As shown in the figure, of the devices identified on the server side, the device labeled 2 is the information for the scanned tape.

Backup tasks will consume a lot of LAN resources.

Backup tasks will consume few LAN resources.

Backup tasks will consume a lot of CPU resources of the production system.

Backup tasks will consume few CPU resources of the production system.

True

False

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

206 Mbit/s

23 MB/s

16 MB/s

800 KB/s

The data that has changed since the last backup is backed up.

Changed data backup since last full backup.

Full backup of all data.

After the initial backup data backup of all data.

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.

Restart the NFS server of the N8500

Restart the client's NFS service

Reseat the NFS client network cable

Forcibly unmount the NFS client mount point and mount it again

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.

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 overlapped with the monitoring period

windows operating system can create up to 4 partitions

Single partition capacity size limit of 1TB

The total number of primary partitions and main expansion partitions does not exceed 4 and the maximum number of primary partitions 4

The maximum number of logical partitions on the main extended partition does not exceed 4

True

False

smart Erase

smart Dedupe

smart Compression

Volume mirror

True

False

SAN

NAS

hot_add

NBD

When the used space of the node pool reaches a high water level, the system reports an insufficient capacity alarm. By default, the alarm recovery threshold is 5% lower than the water level. That is, when the used space recovers below 80%, the alarm of insufficient capacity alarm recovery, the alarm threshold and the alarm recovery threshold can be manually modified

When the node pool's used space reaches high water level and spill over is selected, the pool of nodes forbids writing data to any other node pool or specified node pool to write data

When the node pool's used space reaches high water level and no spill over is selected, the pool of nodes forbids writing data, and does not write data like other node pools

When the used space of the node pool reaches the read-only watermark, the system reports an alarm. The alarm recovery threshold defaults to 0% lower than the low watermark, read-only reportPolice recovery.

Source LUNs: 1 and 3Target LUNs: 2 and 4

Source LUNs: 1 and 4Target LUNs: 3 and 3

Source LUNs: 3 and 1Target LUNs: 4 and 2

Source LUNs: 2 and 4Target LUNs: 1 and 3

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

A client business IO load random read that accounts for more than 60% using SATA, SAS for staging storage, use SSD to do cache, so it will effectively reduce costs and improve random performance indicators

If hot spot data is scattered and changing rapidly, it is recommended to use tiered storage

If there are many SSDs and hotspots, Smart Cache is the best choice

If you have a small amount of SSD data, use a tiered storage disk for more utilization

1KM

10KM

25KM

50KM

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

When the node a is found through the sms -v command, the status of the IPStor Authentication Module is FAIL. The service of the node A will be from Move to Node B.

unplug the A node power supply, A node's business will automatically switch to the B node

unplug the A node and the backup server network connection, the A node's business will automatically switch to the B node

A, B nodes can work in Active-Active mode, but can only manually achieve the backup service load balancing between A and B nodes

True

False

In Device Manager, right-click of the HBA card to see its properties

View in Storage Explorer Manager

View using the FC Info tool

CMD command line, enter the diskpart

CIFS does not allow multiple clients to access

The CIFS client writes the shared file and does not write to the storage system immediately. Instead, the file is saved in the local cache and can be read againImprove read rate, improve performance

CIFS does not support anonymous transmission and shared authentication access

CIFS supports a variety of character sets to ensure CIFS can be used in all language systems

vip

ocr

dlm

asm

True

False

According to the importance of data measurement data backup frequency

Measure the backup window based on changes

According to the size of the data to measure the data retention period

According to measure the backup bandwidth

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 tape deduplication 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

True

False

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

store the log in memory

Store the log in any one of the two PVs

Store the log in the third PV of the current VG

Save the log in another VG pv

Data files

archive log

Control Documents

operating environment (listener tns pfile or spfil, etc.)

1,7,8,9

1,7,15,24

1,4,8,9

1,5,7,9

A storage pool can create two types of LUNs, Thick LUN and Thin LUN

When creating a storage pool, the minimum number of SAS disks in the hard disk domain where the storage pool is located is 9 disks when the performance layer RAID policy is selected as 8D + 1P

In the RAID 2.0 virtualization architecture, the hot spare space in the storage pool is distributed on each member disk in the storage pool

RAID 2.0 virtualization architecture, the storage pool can contain three storage tiers, and each tier can be configured with a number of different RAID strategies

3.2Mbps

128Mbps

114 Mbps

18 Mbps