H13-629_V2.0 HCIE-Storage (Written) v2.0 Questions and Answers

The data that has changed since the last backup.

The data that hasbeen changed since the last full backup.

The completion of all data backup.

After the initial backup, all data has back up.

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.

Metadata is achieved by mirroring node redundancy

Oceanstor 9000 uses a dynamic subtree to organize metadata

The metadata is stored object-wise in the Oceanstor 9000 system

The metadata is actually stored on the SSD of the storage node

TRUE

FALSE

data Reader: The flow of raw data read from the client, set in each client

Data streams: client to MediaAgent data transfer stream, set in the storage strategy

Device Streams: MediaAgent to storage Media data transfer stream, set in each sub-client

The value of Data Reader must be less than the value of Device Streams

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'sthresholds from the effectively managed disk space.

The client is abnormal with cs or MA communication.

Restart the failed node

Use the other node's business IP access

Only manually switch the node's service IP to the remaining nodes

restart service

After creating a mirrored volume for a normal LUN, the server read-write IO results in a change as a result of internal information exchange.

The amount of data actually stored on a LUN is 2G, thetotal copy of the data is 4G. A volume image is created for the LUN, the LUN is mirrored when the copy is generated during system creation.

You can configure a volume mirror for external LUNs or configure external LUNs as mirror copies.

Whenconfiguring volume mirroring, mirror copies are required from different disk domains.

Hard drive capacity

Metadata space size

Hard drive type

RAID type

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 volumeof 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.

Service system:1. Initial capacity allocation: Allocate from the performance layerfirst2. 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

Huawei Oceanstor 9000 can configure different data protection levels for different directories / files.

Data written to Huawei OceanStor 9000 system will be divided according to the size of 4G chunk.

Every N chunk, according to Erasure code algorithm to calculate M chunk calibration fast.

The utilization of protected data space is about N / (N + M), the reliability of the data is determined by the value of M, the greater the M is, the higher the reliability.

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

Before plugging and unplugging the controller, make sure that the service is stopped or has switched to the peer controller

Before switching services to the peer controller, check that the multipathing software in the system is installed and effective on the host.

Confirm Cache dirty data has been saved

Master-slave controller must be switched to be replaced controller for backup

Multiple LUNs for Customer Business. When implementing data migrationusing 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

TCP Header

IP Header

ISCSI Header

ISCSI data

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 andwrite data, and read-only scenes.

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 LUNto the remote controller.

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

The SVP needs to connect multiple engines through two PCI-e switches, and each engine's controller needs to be connected to a PCIe switch to ensure that the link redundancy provides reliability.

When the control plane is connected to the network, when the engine and the PCIe switch are interconnected, the port P0 of the A3 slot and the PCI switch PCI port can be used pick up.

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

Single VIS device failure

Single oracle failure

A single data center full failure

Third-party arbitration array failure

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.

VMFS5 allows concurrent access to shared storage and can be dynamically expanded.

Using data blocks of 1 MB, VMFS5 is suitable for storing large virtual disk files.

Using sub-blocks for addressing, VMFS5 is suitable for storing small files. The sub-block size is 8 KB.

VMFS5 is able to lock disk data blocks.

offline mining

database

mailbox

public folder

True

False

Parameter file

Control Documents

archive log file

Data files

TRUE

FALSE

True

False

Locate the exterior first, then the interior

First perform an alarm analysis, then use the replacement method

First find the high-level alarm, then the low-level alarm

Find the common first alarm, after the individual alarm

If multiple LUNs are used by a service, the LUNs must undergo a consistency splitting after the migration.

If multiple LUNs are used by a service,consistency splitting cannot be performed before stopping services.

For higher migration speed and storage performance, a migration task can be deleted as soon as it is completed.

It is recommended to perform consistency splitting in off-peak hours.

True

False

Non-archiving

Archiving

nomount

mount

True

False

Replacing the optical module of port 0 in slot A0 of node 0.

Replacing the light of the P0 port in the A0 slot of 0 node.

Replacing the optical module of the port connected to port 0 of the corresponding 0-node A0 slot on the switch.

Reseat the FC interface card corresponding to slot 0 of node A0.

It is an object-based approach to data replication

ROW snapshots are based on the cyclical manner ofdata 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.

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 improvereliability.

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.

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

Loss of data will result in substantial loss of business interruption and may also result in significant financial loss.

Business interruption has a huge impact, and the interruption time of business deployment <2h.

Customers want to build two live-action data centers in the same city and realize double-live of the key business systems. The disaster recovery plan RPO = 0, RTO =0

VM NIC adapter error

The media server backup service is abnormal

The backup client service is abnormal

Virtual machine disk class behavior IDE

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 islocated 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

The types of quotas include capacity quota and file quota.

Quota methods include calculating quotas, soft quotas and mandatory quotas.

The system pre-allocates quotas for files before writing the file. When the user cancels the writing of the file being written, the system does not release a pre-allocated quota.

When the user continues to write data, the quota information has been used in the InfoAllocator interface real-time updates.

True

False

Info replication as an optional feature of Huawei OceanStor 9000de, the production sites and disaster recovery sites need onlythe production site to purchase info replicator feature of the license

Plan a separate directory for each type of service using the Huawei OceanStor 9000 system at the D and Y sites in the system's root directory as a remote copy of the master directory, and shared to the corresponding business server i

Because the client's business traffic is mainly concentrated in the daytime working hours, you can not set the replication zone bandwidth limit, the synchronization task on the non-workers make time, take full advantage of node bandwidth

For each type of business to create a pair for the type of business data replication synchronization

True

False

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-Activemode, but can only manually achieve the backup service load balancing between A and B nodes

Correct

mistakes

Scenario: Sequencing large IO services, especially 1M IO scenarios, with the phenomenon thatthe back-end read bandwidth is much larger than the front-end read bandwidthTuning: Turn off the 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 of data 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 POOLto 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

Host to the optical switch connection is abnormal.

When configuring the zone on the switch, configure the FC port and the host port that works in the working mode of the VIS6600T as a target in one zone.

The working mode of the VIS6600T is abnormal because the initiator's FC port is connected to the optical switch.

In the working mode of VIS 6600T, the connection between the FC port of the target device and the optical switch is abnormal.

To prevent changes in the directory or file protection time because of the changes 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.

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 provide49 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.

There is a problem with the storage initiator configuration.

There is a problem with the storage LUN configuration.

There is a problem with the RD software configuration.

There is a problem with the remote replication configuration.

ASM directly manages the hard disk, not the files, the files are evenly distributed across all the disks.

ASM instance SGA includes buffer pool share pool larger pool and so on.

ASM instances can be synchronized and data instances started and synchronized, and must be closed later than the database instance.

ASM is an oracle-based storage solution similar to RDMS, consisting of instances and files, maintained by the sql plus tool.