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Storage array is a network device used to switching network signals or data. It can provide a dedicated communication channel between any 2 nodes in the network that is connected.
The only cable type that can be used to connect disk enclosures is the mini SAS cable.
Which of the following system model is a direct representation of the SCSI connection between the SCSI Initiator and Target?
The mount command is used in Linux-based clients to connect the client to the NFS share.
When the hard disk has bad sectors or blocks, which reconstruction method is used?
Which of the following are the 3 layers of components that storage systems are made up of?
(Multiple Choice)
Which of the following operations does a small employee A of a bank need to do in the first maintenance project of data center storage?
After employee A of a company logs into the storage device of the company system, he finds that he has certain control rights. But not repairable
If the system time is changed, user management cannot be performed. May I ask which of the following roles does Employee A have?
Which of the following descriptions of RAID technology are correct? (Multiple choice)
The following are the characteristics of the clustered NAS storage architecture: (multiple choice)
An engineer maps the storage system to the file server to store various enterprise files. One day, the file system is attacked by viruses and files cannot be opened. To access the files, the engineer performs a snapshot rollback. Which statement is FALSE?
What are the three data centers in the disaster recovery plan that 3DC refers to? (Multiple choices)
Distributed object storage has a unified namespace, and supports online expansion.
The cloud data center virtualizes storage, computing and network resources, and provides a virtualization platform for users to use.
SmartThin is a storage space management provided by HUAWEI OceanStor storage system to allocate storage resources on demand
Technology, based on virtualization technology, SmartThin reduces the deployment of physical storage resources and maximizes storage space
Utilization rate.
A, yes
B, wrong
HUAWEI OceanStor SmartTier can be used to position files to be on specific disk drive types.
This device acts a multiport repeater, blindly regenerating and repeating any incoming electrical signal out all other ports, even ignoring CSMA/CD rules. Which of the following device fits the description?
The following two descriptions are correct:
Description 1: Synchronous remote replication, when the primary storage fails, the amount of data lost can be 0.
Description 2: When the host is a Linux-based file system, asynchronous remote replication must be used.
If a company’s business is to write large-scale data randomly into the LUN, which capacity initial allocation strategy and which
Kind of data migration strategy?
The following description of DAS is incorrect:
A, DAS is directly connected to the designated storage device on the server using them
B, DAS is divided into internal DAS and external DAS
C. The hard disk inside the server is not DAS
D. External DAS can be connected to the server accessing them through FC protocol or SCSI protocol
When the RPO time requirement is at the minute level, the traditional tape backup method can be used.
Backup is concerned with data recoverability, and disaster recovery is concerned with business continuity.
Snapshots used for backup purposes should be set to read-only to prevent modification by other applications and affect the backup data
consistency.
What are the main functions of the business continuity solution? (Select All that Apply)
Many companies gather so much data that they cannot extract the right information from the data,
Remote replication requires master and slave storage from the same manufacturer.
Description 1: The file system of the NAS is managed by a storage or server that provides resources.
Description 2: The file system of the SAN is managed by the host itself.
In Huawei OceanStor storage devices, coffer disks are an optional configuration because the write cache has mirrors, and
There is a backup power supply for the controller.
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Regarding the traditional model and cloud computing model, high reliability in the data center and cross-data center disaster recovery methods, the following says
What is wrong?
Which of the following technology segregates the nodes in the SAN fabric into multiple networks and allows access control of the members?
A customer needs zoning configured in a Fibre Channel switch. The customer frequently changes the patch points in the infrastructure. What zoning method is preferred then?
In Huawei storage systems, which feature can be used to periodically detect and migrate hot data from the capacity tier to the high-performance tier?
A snapshot is a point-in-time copy of the source data that serves as a data backup accessible to hosts.
An Internet company plans to purchase a storage device to store archived service data and online transaction data. SSDs are expensive and HDDs cannot meet the performance requirements of online services. Which features CANNOT solve this problem? (Select All that Apply)
Which of the following best describes the relationship between the storage and host in DAS?
Which of the following are the data transmission rates that can be configured on the FC ports on the FC switch in FC SAN given that your cable and SFP supports it? (Select All that Apply)
In the following backup media, the order of unit capacity price from low to high is:
The cloudification of IT architecture is from "separation" to "convergence". What does convergence mean?
An intelligent backup strategy involves multiple backup policies on the same production data i.e, with different retention periods and different schedules.
The following description about CIFS and NFS sharing is incorrect: (multiple choices)
The difference between DAS and SAN, which of the following descriptions is wrong?
The SCSI protocol is the basic protocol for host and disk communication. It is operated by the SCSI controller, the controller is equivalent
For a small CPU, it has its own command set and cache.
What three stages do storage systems need to go through to realize SmartTier? (Multiple choice)
The dual-controller storage system generally contains a mirror channel, and data written to the storage system cache will be written through the mirror channel
Into the peer controller.
The FCoE protocol refers to encapsulating the FC protocol into a TCP/IP protocol package and transmitting it on Ethernet.
What is required to add additional controllers to an existing HUAWEI OceanStor system?
IP SAN uses underlying optical networks to connect servers and storage systems.
Which of the following is a valid iSCSI name that can be used to set up the iSCSI connection between the initiator and target? (Multiple Choice)
Statement 1: OceanStor Dorado systems are designed for high performance environments. Statement 2: OceanStor Dorado systems are so-called All Flash Arrays.
Select the features that are commonly available in High End storage systems.
(Multiple Choice)
Which of the following statements about the coffer disks of the HUAWEI V3 series storage systems are correct?
(Multiple Choice)
When UltraPath is installed on the application server, the operating system can automatically identify the LUN mapped to the host, and
There is no need to restart the host.
Description 1: The data recovery of the snapshot depends on the source data. If the source data is physically damaged, it cannot be recovered. and
In this case, the clone can still restore the source data.
Description 2: After the source data is damaged, the LUN copy must completely copy the backup data to restore the source data. And clone only
Damaged data needs to be recovered, which greatly reduces the recovery time.
A, description 1 is correct, description 2 is correct
B. Description 1 is right, description 2 is wrong
C, description 1 is wrong, description 2 is right
D. Description 1 is wrong, description 2 is wrong
The steps of asynchronous remote replication multi-point technology, is the following statement correct?
(1) A new time slice (T2, P2) is generated in the cache of the master LUN and the slave LUN at the start of each replication cycle
(2) The newly written data of the host is cached in the time slice T2 of the main LUN Cache, responding to the completion of the host
(3) The master and slave LUNs each release the received data
(4) Copy the data of time slice T1 directly to the slave LUN and write it to the time slice P2 of the slave LUN
SCSI communication is initiated by the initiator and received and processed by the target. When the host and the storage device communicate, the storage device
The side assumes the role of initiator.
For a system with high business continuity to find that, the characteristics of RPO and RTO values should be:
A, RPO is higher, RTO is lower
B. RPO is lower, RTO is higher
C, RPO and RTO are lower
D, RPO and RTO are higher
Description 1: The LUN is composed of multiple Extents in the storage pool.
Description 2: The LUN can contain one or more types of Extent.
Which of the following statements about Huawei RAID 2.0+ are correct? (Multiple choice)
If a disk is faulty, what is the process of recovering data on the faulty disk?
The following different types of SSD disks have the lowest unit capacity price:
A, SLC
B, eMLC
C, cMLC
D, TLC
In a traditional RAID group, when a certain number of hard drives fail, the entire RAID group can prevent data loss, and
The data recovery process has not been started. What is the status?
The NAS device performs functions such as file service, storage, retrieval, and file access on the basis of a general-purpose server
optimization.
From the perspective of the cloud computing business model, Huawei network disks belong to PaaS.
The server with Linux operating system installed accesses the disk array based on the RAID 5 strategy.
The order is:
When a company's customers need to complete data migration between devices, what features can be used to complete? (Multiple choices)
Regarding data-level, application-level and business-level disaster recovery, is the following statement correct?
When deploying random small IO-based database services on storage, which RAID type should be appropriate? for
what?
The dual switch network design is widely used in the FC SAN environment. The following description of the dual switch network redundancy design,
Which ones are correct? (Multiple choice)
Extent of RAID2.0+ technology is the basic unit of which technology in the storage pool? (Multiple choice)
If the disaster recovery center in the same city fails, the production center in cascading networking mode will lose all its backup sites.
Description 1: A RAID consisting of several hard disks is called a physical volume.
Description 2: RAID 5 can improve the read and write rate and provide a certain degree of data security, but when there is a single hard disk failure
At this time, read and write performance will be greatly reduced.
OceanStor V3 series storage can only support iSCSI or FC host links separately, not both
Connect to the network.
Xiao Wang, an employee of a small business, accessed the CIFS protocol on a Linux application server supported by his company's storage system
Ask about shared files.
According to the disaster tolerance effect, the disaster tolerance level can be divided into: (multiple choice)
What conditions should be considered for device backup bandwidth? (Multiple choice)
A, the size of the initial data
B. The daily quantity increment
C. Backup cycle
D. Backup staff
In the Huawei storage system using RAID2.0+ technology, regarding the difference between Thick LUN and Thin LUN, the following
Which description is correct? (Multiple choices)
In the HUAWEI OceanStor storage system, one LUN can create multiple snapshots, but only one snapshot
Can be activated.
Regarding the steps of SAN synchronous replication, what is the correct order?
(1) The production storage receives the host write request. HyperReplication logs the request. Only the place is recorded in the log
Address information, without recording data content.
(2) HyperReplication waits for both the primary LUN and secondary LUN write processing results to be returned. If both are written successfully, clear
Log; otherwise keep the log, enter the abnormal disconnection state, and then copy the corresponding number of the log address again when starting synchronization
According to the block.
(3) Write the request to the master LUN and slave LUN. Normally, the LUN is in the write-back state, and the data will be written
Cache.
(4) Return the processing result of the host write request, which is subject to the processing result of the write master LUN.
Description 1: The file system of the SAN storage is deployed on the storage side, and the file system of the NAS storage is on the host side.
Description 2: Dynamic tiered storage can achieve data migration between storage media with different performance
What is wrong with the following description of DAS?
A, DAS refers to the storage device is directly connected to the server through a SCSI cable or Fibre Channel
B. The data in DAS mode is still scattered, and each application has a set of storage devices. Management is decentralized and cannot be centralized
C. When the server and the storage device are directly connected, new application requirements arise, only for the newly added server
Separate storage device configuration, resulting in repeated investment
D, DAS storage space can be fully utilized, storage devices that can be shared by different application servers, fully
Leverage idle storage space
In a RAID5 composed of three disks, if 10110110 and 11010011 are written simultaneously,
Two data disks with the same stripe, then 01100101 will be written to the verification disk.
CKG is composed of multiple CKs on different hard disks of different types in the hard disk domain.
Among the following options, what is the correct sequence of the basic business configuration process for data center block storage?
1. Create a mapping view. 2. Create a storage pool. 3. Create a hard disk domain. 4. Create a LUN and create a LUN group. 5.
Create a host group. 6. Log in to DeviceManager
A, 6->2->3->4->5->1
B, 6->3->2->4->5->1
C, 3->2->4->5->1->6
D, 4->5->2->3->1->6
Regarding OceanStor V3 LUN deletion, what is wrong in the following description?
FCoE is a transmission protocol standard that encapsulates frames in FC in lossless Ethernet and is used to form storage networks
Network.
Use the CIFS protocol to access the share. When the share name and the user name are the same, the shared order of access is:
In the HUAWEI OceanStor storage system, which protocol is used for the mirror channel between the controllers?
In Huawei storage systems that use RAID 2.0+ technology, a hard disk domain can only contain one type of hard disk.
What kind of technology does the OceanStor 5300 V3 expansion controller belong to?
Deduplication is a data reduction technology that compresses large-size data blocks to reduce the physical storage capacity for storing data, thereby meeting increasing storage capacity requirements.
If a disk domain has multiple disk types, the storage pools in that disk domain MUST have multiple disk types in them.
Which statements are true about a dual-controller storage system? (Select All that Apply)
During data center construction, a media company purchased storage devices from multiple vendors. The CTO wants to centrally manage these devices through storage virtualization. Which function is NOT provided by storage virtualization?
Which of the following RAID levels has the lowest hard disk space utilization?
Which of the following statements correctly describe the improvements of SAS technology compared to SCSI? Select All that Apply.
A single-platter or multi-platter disk allows only one head to read and write data at a time.
As the new storage administrator, you are tasked with the procurement of a new batch of SSD drives to replace the older drives that has reached the end of life. You have the option of SLC, MLC and TLC SSD. Which of the following will be your choice with a limited budget and medium level of reliability concerns? (Select All that Apply)
Which statements are true about the ports of a Huawei OceanStor all-flash storage device? (Select All that Apply)
A company purchases storage devices for new services. The new services do not require high access speed of storage devices. In this scenario, the IP SAN can be used for networking deployment.
A company purchased DAS devices to store files and service data at the startup stage. With the increase of service volume and diversity, which problems may occur? (Select All that Apply)
Statement 1: MLC drives are optimal when used for high intensity writes to that disk.
Statement 2: The latency of SSD drives is about 0.1 s.
Statement 1: The higher the number used to indicate the RAID level, the higher the overhead
Statement 2: RAID 10 stripes the data, then mirrors the stripe set.
Based on the understanding of the Generation stage of the lifecycle management of information and data, identify the 3 types of sources in which data can be generated.
(Multiple Choice)
Select the correct statements that describes the properties of Distributed Storage Architecture.
(Multiple Choice)
In HUAWEI OceanStor,which of the following statements about mapping a snapshot is true?
Which of the following are attached to the storage system serially? (Multiple Choice)
Statement 1: A company should know what the Cost Of Downtime is to determine the backup strategy.
Statement 2: For the business continuity it is not important to determine the RTO.
Select which of the following which is not a properties of Distributed Object Storage Architecture.
In order to make full use of storage resources, on which tier are SSDs usually configured in a tiered storage system?
Select the correct statements that describes the properties of bus technology in ICT architecture. (Choose all that apply.)
It is an electronic device controlled by a motor that moves the hard drive head arm. Which of the following component fits the above description?
Cloud technology refers to the process of migrating all the local servers to an external online datacenter for data protection purposes.
TESTED 21 Nov 2024
