100

150

125

167

The first time you configure and use eth1, you can directly configure the network port IP on the VTL console

In the command line configuration management network port directory / etc / sysconfig / network-scripts

In the command line configuration, you need to log in to the VTL operating system, the user name is root

After the command line configuration is complete, you need to restart the network service by running the service network restart command

True

False

A bank has more than XX customers and XX corporate customers.

Data loss will be huge and business disruption may result in significant financial loss.

Business interruption has a huge impact, and the interruption time in business deployment is less than 2 hours.

Clients want to build two live-action data centers in the same city to realize the key business activities such as RTO 2.

4 + 3: 1

6 + 3

4 + 2

12 + 3: 1

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

Service system:1. Initial capacity allocation: Allocate from the performance layer first2. Data relocation policy: Lowest relocation

Mail system:1. Initial capacity allocation: Automatic allocation2. Data relocation policy: Automatic relocation

Video system:1. Initial capacity allocation: Allocate from the capacity layer first2. Data relocation policy: Automatic relocation

Video system:1. Initial capacity allocation: Allocate from the capacity layer first2. Data relocation policy: Lowest relocation

True

False

For striped type file systems, the number of columns does not exceed 8, preventing data from being too discrete

If the file system exceeds 1TB, select 8192 as the blockize

Create a striped file system, the number of columns consistent with the number of RAID groups

When the number of documents exceeds 1000W, it is recommended to open the quota

Not just the host with IP 100.43.13.210 can access this NFS share

To query the client for all the NFS shares on the service IP, use the command: showmount -e 100.43.13.11

Mount the NFS shared file system locally and execute: mount -t nfs 100.43.13.11:xs-cmfs / mnt

Verify that NFS shared file system has been mounted locally, executable: mount

TRUE

FALSE

unstructured data high proportion

large amount of data, rapid growth

A variety of data types

data unit GB value of high density

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.

It does not consume any host resources.

It is lower in migration cost than gateway-layer solutions such as those based IBM SVC, and EMC VPLEX.

It requires services to stop only once, and the service stopping occurs after the migration.

It delivers higher migration speed than host-layer solutions.

SAN

NAS

hot_add

NBD

True

False

Chunks in a CKG may come from different types of disks.

A LUN consists of extents or grains.

Chunks in a CKG may come from the same disk.

Chunks in a CKG may come from different storage pools.

True

False

The disk on the array on which the failed mirrored volume failed

Array where the failed mirrored volume is powered down

The RAID array is degraded on the array where the failed mirrored volume is residing, and the hot spare is being rebuilt

All optical links between the VIS 6600T and the array in which the failed mirror volume is located have failed

copy Mode: This mode to develop physical tape data copy to the corresponding virtual tape, at the same time the development of the physical tape recycling

Direct AccessMode: This mode only copies the beginning of the physical tape 10MB data, contains the data stored on the tape backup software, without having to copy the backup data

Recycle Mode: This mode is to block copy mode, the entire tape is copied to the virtual tape

Recycle Mode: This mode will automatically recycle the tapes that have passed the data retention period

vip

ocr

dlm

asm

True

False

True

False

Log analysis tools can run on any PC, do not need to interoperate with the storage system, the analysis process time according to the amount of the log may be, may it takes a long time

Log Analysis Tools After starting the analysis, the analysis tasks need to be stopped due to other reasons. Click on the analysis tool to abort this analysis

Engineer A deleted the original compression of the results of the collection, then the results will be collected to re-catalog the contents of all documents compressed into zip format for the dayChi analysis tools for analysis

After the analysis is completed, all the problems caused by the log analysis will be presented in the list of problems, and "View Details" contains the approximate cause of the problem and processing advice

GSLB

VIP

SLB

GLB

Agent-Agent monitors the resources of each system and provides the status to each machine's HAD

HAD Cluster service that monitors and manages the cluster's NAS

Under the management of the master node of the cluster, Gab sends the communication information between the cluster members to the point communication

LLT (Low-Latency Transport) sends information to all nodes in the cluster through a low-latency delivery protocol

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

MSCS

oracle RAC

HACMP

SQL server

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

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

Based on lvcb offset reconstruction nude equipment, and the database level 0 backup import

Use the dd command for data migration

Use the cplv command for data migration

Use migratepv for data migration

Thin LUN and thick LUN can be configured with the same capacity.

Both thin LUN and thick LUN can make initial capacity allocations.

The maximum capacity of thin LUNs and thick LUNs can be greater than or equal to the available capacity of the storage pool where they reside.

Both thin LUNs and thick LUNs can be created in bulk.

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

One Ethernet port can create multiple logical ports

If Ethernet ports A and B are added to VLAN 2, by default the ports A and B data are in the same drift group

If binding port A and physical port B join a unified VLAN, as long as there is a physical port in bonded port A, the service will switch to Physical Port B

When the IP drift mode is set to "Manual", when the port is restored, and the active port link is in a normal state for more than one minute, the system can cut back the service to the main port.

It is an object-based approach to data replication

ROW snapshots are based on the cyclical manner of data replication

It can be manually set off by the user or system timing synchronization starting

It supports the Quota quota information of the main file system to the slave, no need to configure the quota.

OLAP business query output is usually a statistical value (using group by with order by), so you can set a larger SGA-target value (relative to OLTP).

It is recommended to use UDEV UUID and drive letter binding, in Linux environment configuration Oracle database, to avoid subsequent maintenance letter changes caused by the database which can not start.

If the database OLTP business log write is very frequent, it is recommended that the appropriate online log file up, but it is recommended not to exceed 128MB.

In Windows2008 or windows2012 operating system environment, in order to improve I / O processing efficiency, MBR partition is created, and diskpart command is recommended to set the partition alignment.

VxFS is a non-log file system that can support more than 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.

10:25

12:00

15:00

15:20

Client offline

Media Server Offline

The client can not resolve the media server host name

backup media failure

Rsize / wsize, read and write the maximum size of each block, it is recommended to adjust to the maximum. General Linux operating system environment, the maximum value of 1M.

Async, allowing asynchronous data write, synchronous write requirements. NFS server must brush each data into the hard disk before it can return success delay higher.

Noatime, if you do not need to record the file access time, you can increase this parameter to avoid frequent access, modify the access time to open pin.

Nolock, if there is a shared file between NFS clients, you can use this parameter. Reduce service-side file lock overhead.

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.

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.

lspci | grep SCSI

cat / proc / scsi / scsi

cat / proc / scsi / qla2300 / 1 | grep port

lspci | grep Ethernet

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.

Create a 2TB NTFS volume, the default sector (cluster) size is 8KB.

Create a 30GB FAT32 volume, the default sector (cluster) size is 8KB.

NTFS volumes can be set to the largest sector (cluster) to 512KB.

The smallest sector (cluster) that an NTFS volume can set is 4KB.

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.

Create a virtual snapshot of the slave LUN and activate it, then map the snapshot LUN to the host for authentication.

After the snapshot LUN is mapped to the host, the host can read and write the snapshot LUN.

After the verification is completed, stop the upper-layer service application, release the LUN mapping, and finally delete the snapshot.

Stop the snapshot before the host can write snapshot LUN.

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

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

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

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