In the Huawei Oceanstor 9000 storage system, when a certain InfoReplicator is in a split state, the following statement Which one is incorrect?

After the Pair is resynchronized, the difference data and the synchronized amount that have not been copied to the secondary directory due to the split operation in the last synchronization need to be Seek synchronization

Pair split occurs, the possible cause is temporary link abnormality or network bandwidth expansion

At this time, the master-slave relationship of the two directories specified by Pair remains unchanged

After the Pair is resynchronized, the difference data and the synchronized amount that have not been copied to the secondary directory due to the split operation in the last synchronization need to be Seek synchronization

If there is a third-party cabinet in the equipment room, the inspection contents of the third-party cabinet include: (multiple choice)

Ground bearing capacity of the machine room

When accessing the Linux client of the Huawei Oceanstor9000 cluster, the client parameters can be adjusted to improve access Performance, which one of the following is wrong?

Oceanstor9000 supports jumbo frames, it is necessary to set the MTU of all front-end and backend business network ports

N FS uses TCP protocol to send and receive data, appropriately increasing the buffer size can speed up TCP transmission

Enabling Jumbo Frames can reduce TCP loss and improve performance. The prerequisite is to confirm that the customer All network devices between end interfaces must support jumbo frames

In order to support jumbo frames, all nodes of the corresponding Oceanstor 9000 need to be set accordingly

Oceanstor9000 supports jumbo frames, it is necessary to set the MTU of all front-end and backend business network ports

In the software module of Huawei Oceanstor 9000, it belongs to the distributed object storage layer, not the distributed file system layer It is: (multiple choice)

PVS(Protocol and Value-added Service)

Regarding the networking of the Huawei Oceanstor 9000 system, which of the following option descriptions is correct?

Whether it is a front-end business network or a back-end storage network, it is recommended to use two switches to connect all nodes to achieve redundancy

Only the storage node needs to be connected to the management network, and other devices do not need to be connected to the management network

The front-end business network switches can be stacked, but the back-end storage network switches are not recommended for stacking

To meet the management requirements, only the first three nodes of the cluster need to be connected to the management network

In the feature of Huawei Oceanstor 9000InfoReplicator. Pair is a data replication relationship, which describes data replication The source and destination of the, the following statement about the state transition of the Pair is incorrect (multiple choice)

In the case of Pair failure, its status includes recovery, invalidation, synchronization, split

When the abnormal link recovers and the recovery strategy is manual, the status of the Pair will be migrated to "synchronizing"

When the InfoReplicator configuration is destroyed, the status of the Pair becomes "Invalid"

In the case of Pair failure, its status includes recovery, invalidation, synchronization, split

When the abnormal link recovers and the recovery strategy is manual, the status of the Pair will be migrated to "synchronizing"

When the InfoReplicator configuration is destroyed, the status of the Pair becomes "Invalid"

Regarding the switches used in the Huawei Oceanstor 9000 system, which of the following options are correct?

The CE6810 switch provides 10GE/GE access.

The switches used in the configuration of the Oceanstor 9000 storage system include CE6810, S5752/S5352 and IS5023.

IS5023 switch provides IB access

S5700/S5352C switches provide GE access

The CE6810 switch provides 10GE/GE access.

In order to ensure performance and improve disk utilization in Huawei Oceanstor 9000, it is recommended that you The stripe value is set for the piece size. Which one of the following describes the wrong stripe setting?

Only non-empty directories can modify the redundancy ratio

The relationship between redundancy ratio and read/write performance from high to low is:N+l>N+2=N+2:1> N+3:1>N+4

Only non-empty directories can modify the redundancy ratio

The relationship between stripe size and read and write performance is: 512KB>256KB>128KB> 16KB

The modified strip size is only effective for the file that was written, and the existing file before modification still keeps the strip size before modification

The following description of the cache in Huawei 0 Ceanstor 9000Which one is wrong?

The second level cache is used to cache the hot data of this node. At the same time cache the hot data of the same node and other nodes

The first level cache is the read cache of the storage node, and the location of the global cache is in the first level cache

The second level cache is used to cache the hot data of this node. At the same time cache the hot data of the same node and other nodes

The second-level cache is composed of SSD disks, if there is no SSD disk in the node, there is no second-level cache

The telegram cache (NVDIMM) is mainly used as a write cache.

What is the incorrect description of the features of Huawei 0 ceanstor 9000lnfoTier and related concepts?

The number of nodes in the node pool is limited, including at least 3 nodes and at most 20 nodes

The node types in the node pool do not have to be the same

The number of nodes in the node pool is limited, including at least 3 nodes and at most 20 nodes

The hard disks of all nodes in the node pool are of the same type

InfoTier features correspond to different file pool strategies through different levels

Which automatic load balancing method does Huawei Oceanstor 9000lnfoEqualrser support by default?

Answer by node comprehensive load

In the 10GB network of Huawei 0ceanstor 9000, the switch CE6850-48S4Q-EI can be used. About the switch description.The correct one is: (multiple choice)

Support 4 40GE QSFP+ Ethernet ports

40G E interface is used for stacking between switches

Support up to 32 10GE SFP+ Ethernet optical ports

Support 4 40GE QSFP+ Ethernet ports

The 10GE interface on the switch is used for the interconnection between downstream storage nodes and also for the connection between storage nodes and upstream services

40G E interface is used for stacking between switches

Huawei Oceanstor 9000 storage system adopts hierarchical security maintenance. What is not the security content of the application layer?

Use SSH/SFTP methods to avoid insecure network communication

Authorization and authentication mechanism

Use SSH/SFTP methods to avoid insecure network communication

Regarding the Huawei Oceanstor 9000 software version upgrade, the correct statement is: (multiple choice)

In order to ensure uninterrupted business, the online upgrade needs to be upgraded node by node, so the cluster upgrade time is related to the number of nodes in the cluster.

When upgrading a node, if other nodes fail, some business data may be inaccessible

In order to ensure uninterrupted business, the online upgrade needs to be upgraded node by node, so the cluster upgrade time is related to the number of nodes in the cluster.

There are multiple nodes in a cluster. After a node is successfully upgraded, Users can use the functions of this new upgraded version.

When upgrading a node, if other nodes fail, some business data may be inaccessible

Online upgrade can perform upgrade operations on all nodes in the cluster at the same time

Erasure Code N+M implemented in Oceanstor 9000The principle of redundancy technology, which one is wrong in the following description?

For every N chunks, calculate the check blocks of M chunks according to the ErasureCode algorithm

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

The data written into the Oceanstor 9000 system will be divided into chunks according to the size.

For every N chunks, calculate the check blocks of M chunks according to the ErasureCode algorithm

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

The correct statement about the Huawei Oceanstor 9000lnfoTier node pool is: (multiple choice)

The node types in the node pool must be the same

If it is an OPS intensive application scenario, it is better to configure P nodes in the node pool

When the node pool is composed of P nodes, a node pool contains at least 3 nodes

The node types in the node pool must be the same

If it is an OPS intensive application scenario, it is better to configure P nodes in the node pool

When the node pool is composed of P nodes, a node pool contains at least 3 nodes

Huawei H13-624 Practice Test 8 - Free Online Exam Prep & Questions

Question 1 / 40

Which of the following statements about Oceanstor 9000 maintenance is incorrect?

The system provides an admin (super administrator) account by default, and the administrator account is not allowed to be deleted

Only super administrator users can execute the create system user command to create users

To view the information of all accounts, the command cat/etc/passwd can be used.

ps-ef command to check TCP service/port

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