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WorksheetsHCIA Storage 4.5 v1
Total questions: 60
Worksheet time: 35mins
When a server has insufficient built-in disk slots or capacity, you can connect an external storage device to the server to expand the storage capacity.
True
False
A company has enabled the SmartTier policy in a storage system. After I/O monitoring and statistics collection, it is found that most I/Os written by a service are active data and frequently accessed. To improve the overall performance, the company changes the initial capacity allocation policy to allocation preferentially from the capacity tier.
True
False
Compression reduces occupied storage space by deleting duplicate data blocks without causing data loss. It improves the efficiency in data storage, transfer, and processing.
True
False
Enterprise A purchases a storage device (such as Huawei OceanStor all-flash storage) to store service data. Three snapshot copies of the service LUN need to be used for development of other applications at the request of operation. You can set the source LUN to generate three snapshots at a time and map them to three applications for development.
True
False
In a hybrid flash storage system (such as a Huawei OceanStor hybrid flash storage system), intelligent tiering of cold and hot data in file systems facilitates migration of files between SSDs and HDDs (SAS or NL-SAS disks).
True
False
NAS mainly uses FC protocols to provide file access and file storage.
True
False
In comparison to parallel cables, SAS cables are more prone to electronic interference due to their structure.
True
False
Storage pool provides the logical disk space and are created in the disk domains.
True
false
For a Huawei OceanStor all-flash storage device as an example, you can add Ethernet ports or bond ports of the storage device to multiple independent VLANs. You can configure different services in different VLANs to implement physical isolation of service clata and ensure the security and reliability of service data.
True
False
Hardware RAID uses a dedicated RAID adapter, disk controller, or storage processor to process RAID tasks.
True
False
NVMe can be used for PCIe SSDs and directly connects PCIe SSDs to the CPU through the native PCIe channel, for optimizing the latency in communications between external controllers (SATA and SAS ports) and the CPU.
True
False
Due to the data center bridging technology, iSCSI and Fibre Channel are both lossless protocols.
True
False
In RAID 2.0+, the storage system automatically sets the hot spare space after a user selects a hot spare policy.
True
False
An engineer runs the "change ntp server config" command on a storage device to automatically synchronize the storage system time with the NTP server time.
True
False
The recovery point objective (RPO) is used to identify how much time lies between two backups.
True
False
When upgrading its IT architecture, a company considers migrating some services from the old storage to the new Huawei distributed storage. Which statement is true?
The distributed storage can use the 10GE service network
The distributed storage can use the existing GE network as the back-and storage network
Existing disk enclosures can be used as distributed storage nodes.
Coffer disks must be configured for distributed storage.
Which of the following is not the benefits of converged storage systems?
Saving of rack space due to integration of equipment into one device.
Converged storage system has better data protection compared to other non converged systems.
The same device is able to provide both block storage and file storage.
Unified management of storage resources.
When does data become information?
When it has been stored in the right file format.
When it has been stored in a digital form
When the company understands the data and learns from it.
All of the above.
Which is NOT the working principle of SmartQo5?
LUN-based VO priority scheduling
LUN-based I/O traffic control
File system-based I/O priority scheduling
Burst I/O latency scheduling based on file systems
When a host reads data from a thin LUN, which technology is used to read data from the actual storage space of a storage pool?
Capacity-on-write
Direct-on-time
Direct-on-read
Capacity-on-read
Which statement is true about Smartlier?
The response time of SSDs is short, but the storage capacity cost is very high. SSDs belong to the high-performance tier.
The storage capacity cost and request processing cost of NL-SAS disks are low. NL-SAS disks belong to the capacity tier.
The performance tier consists of SAS disks and NL-SAS disks.
The performance tier consists of SAS disks and SSDs
When receiving a write request, which of the following will be triggered for a Thin LUN to allocate capacity?
Capacity-on-write.
Storage-on-write.
Redirect-on-write.
Copy-on-write.
A bank plans to create storage space for a bill transaction system. It is estimated that the service data volume will reach 50 TB in a short period of time. However, the engineers only create 30 TB thin LUNs. What is the reason for this?
Online capacity expansion is supported without service interruption.
30 TB space has been allocated to prevent storage resource preemption by other services.
Data is written in copy-on-write (COW) mode, improving write performance.
The space mapped to the disk can be continuous, ensuring better sequential read performance
Which statement is true about the extent in RAID 20+ technology?
An extent can be 128 MB, but a grain is always 64 kB
An extent can be as small as 512 kB and as large as 128 MB.
An extent can be as small as 512 kB and as large as 64 MB
An extent can be as small as 64 MB and as large as 512 MB.
A company purchased a NAS device to save files. Which statement is false?
Do not use the NAS device to support database applications
Configure quotas for fille shares to manage storage space.
Configure different file access permissions for different users to ensure data security.
Use the Fibre Channel network to provide the file sharing service.
Select which of the following which is not a properties of Distributed Object Storage Architecture.
Automatic load balancing
Online expansion
Global namespace
Centralized nodes.
What is the functions of parity in RAID?
Parity is used as the index for files in RAIL O
Parity is used for hashing of files in RAID
Parity is used to rebuild the lost data in RAID.
Parity is used for decuplication of files in RAID.
What is the main benefit of clustered NAS storage?
High availability through local clustering.
Simplified management.
Increased efficiency in providing file services.
Increased data security
What is the main purpose of hot swapping technology in disk enclosures?
To smap out the hard disks after proper shutdown of storage system
To swap out the hard disks without turning off the storage system.
To be able to swap out the disks when the temperature is too hot.
Maintain the temperature of the disks to prevent overheating.
An enterprise plans to build a new storage system. The main business of the enterprise features high I/O. Therefore, engineers plan only the high-performance tier and performance tier when designing disk domains for the main business. Which disk types are involved in the disk domain of the enterprise's main business?
SSD and SAS disk
SAS disk and NL-SAS disk
SSD and NL-SAS disk
NL-SAS disk and SATA disk
Which of the following is not involved in the SCSI Protocol Addressing?
HostID.
BUSID.
Device ID.
LUNID.
Which of the following statements is incorrect?
A RAID group is like a physical volume that consists of multiple disks.
One logical volume can be created on a physical volume.
Multiple logical volumes can be created on a physical volume.
A LUN can reside on multiple RAID groups.
Which statement about SCSI is false?
SCSI stands for "Small Computer System Interface". It is a protocol system.
The latest protocol is SCSI-3, which provides a transmission speed of up to 1 GB/s
The evolution is SCSI-1 SCSI-2 > SCSI-3.
SCSI supports communication between different devices.
What is a storage array?
A system that handles the communication of data from end users to its storage location and provide confirmation on successful storage.
A system that manages the network functions and carries the data traffic from host to storage.
A system that has the management software that can provide access to its sets of hard drives or tape libraries for the purpose of data access and storage
A system that handles the interconnection of hosts to disks drives and allows hosts to directly access the disks and use it as local drives.
What is the main difference between desktop grade hard drives with enterprise grade hard drives which is the deciding factor in hard drive usage?
The presence of mechanical parts
The performance of the hard drive
The capacity of hard drive.
The lifespan of hard drive
Which one of the following is a type of mechanical drive?
SSD.
SAS Drive
NVME Drive.
Flash Drive
Which RAID technology cannot improve data reliability?
RAIDO
RAID 1
RAID 10
RAIDS
An engineer plans to configure a RAID policy for a set of hard disks with the requirement of having horizontal and diagonal parity information. Which of the following RAID type can be applied?
RAID 30
RAID 50.
RAID 6 (P+Q
RAID 6 (Double Parity)
Which of the following is the correct procedure for configuring a HUAWEI OceanStor storage system?
Creating a Storage pool - Creating a LUN Adding a mapping
Creating a Storage pool -> Adding a mapping -> Creating a LUN.
Creating a LUN-Creating a Storage pool - Adding a mapping
Creating a LUN-> Adding a mapping -> Creating a Storage pool
Which of the following technologies is able to minimize the RIO to the maximum extent, and provide continuous access to data and services in the event of disaster?
High Accessibility.
Multipathing.
High Availability.
High Synchronization.
Which of the data storage types are classified based on data access frequency?
Online storage
Nearline storage
offline storage
Unified storage
Which of the following is an example of unstructured data?
Images
SQL Databases
NoSQL Databases
Video
The I/O traffic control of Huawei storage systems SmartQoS feature uses the token bucket algorithm. Which statements are true?
If the traffic type of IOPS is to be limited, one UO corresponds to one token.
If the traffic type of bandwidth is to be limited, one sector corresponds to one token.
If a performance upper limit is set for a traffic control group, the upper limit is converted into a token.
A token can belong to multiple token buckets.
Which statements are true about SmartThin?
Storage devices can be managed in the on-demand allocation mode
The storage space displayed to users is much larger than the actual storage space allocated by the system.
Expanding the capacity of a single thin LUN is to increase the nominal storage space of the LUN. Actually, storage space is provided for users in the on-demand allocation mode
Multiple thin LUNs can be created in a storage pool to meet the requirements of scenarios where multiple services with different requirements coexist
Which of the following statement is correct?
Only when a snapshot is activated will the system record all changes to the original LUN
A snapshot needs to be removed from the LUN group to be fully unmapped
SmartTier supports the high performance tier, performance tier, large capacity tier, and capacity tier.
To write data to the secondary LUN of a clone pair, the pair must be split
Huawei storage (such as Huawei OceanStor all flash storage) supports the quorum server mode for active-active DR services. Which statements about quorum servers are true?
Deploying the quorum server on a VM at any active-active site helps reduce costs.
The quorum server can be deployed in multiple operating systems, such as Windows and Linux
The failure of the quorum server does not affect service provisioning.
The quorum server can communicate with the storage management network or storage service network
On the IP SAN of an enterprise, the host resource usage is always high. It is found that the initiator software on the host occupies a large number of resources to convert iSCSI packets into TCP/IP packets. What are the solutions that can solve the preceding problem?
Change the 10GE network to a 25GE network.
Replace the NIC with a TOE NIC
Replace the NIC with an ISCSI HBA.
Expand the capacity of the storage device.
Which of the following are the 3 layers of SCSI Target Model?
Network Layer
Port Layer.
Middle Layer.
Device Layer.
Based on how HDDs work, which statements are false?
The faster the rotational speed of disks, the shorter the seek time.
In the case of continuous I/Os, the rotational speed is the primary factor affecting IOPS.
The seek speed is the primary factor affecting the random I/O performance of a disk
The capacity of a single platter directly affects disk performance.
As the project administrator of the new storage system, you are required to choose between the SAS and SCSI protocol and explain on the advantages of your choice. Please select the statements that fits your choice.
SCSI protocol is preferred as it supports higher number of devices connected to the storage system.
SAS protocol is preferred as it has full duplex transmission compared to half duplex parallel SCSI connection.
SAS protocol is preferred as it offers higher transmission rate than SCSI protocol.
SCSI protocol is a better choice due to its higher throughput compared to SAS.
Which statements are true about the SCSI protocol?
The SCSI protocol can be used for data transmission between different devices.
Through the SCSI protocol, data can be transmitted over multiple media, including virtual media.
The SATA protocol is the serial standard of the SCSI protocol
The SCSI protocol can be used only for data transmission between the same devices.
Suppose, for cost control reasons, a startup company can acquire only one storage device to provide services. However, its services require high hardware reliability, so an engineer recommended a Huawei OceanStor all-flash storage system. Which statements describe the high reliability of the storage system?
It supports clusters consisting of multiple controller enclosures to improve the availability of the storage system.
Interconnect I/O modules shorten failover time when a controller fails to provide better reliability, as compared with common V/O modules.
Standard I/O modules shorten failover time when a controller fails to provide better reliability, as compared with interconnect IV/O modules.
When a controller fails, I/Os of the faulty controller are redirected to another controller. The host is unaware of the fault and services remain running property.
What are the typical characteristics for a DAS solution?
More scalable in capacity than a SAN solution
It's consist of a server/host and its locally connected disk drives.
The DAS solution enables file sharing over the network.
Backups are centrally made on a special backup server.
Compared with traditional RAID, what are the features of RAID 2.0+?
Block virtualization enables data to be automatically and evenly distributed on disks in a storage pool, preventing unbalanced loads.
Independent global or local hot spare disks must be manually configured.
If a disk is faulty, RAID 20- uses thin reconstruction to further shorten the reconstruction time.
Many-to-many reconstruction is supported. Reconstructed data is written to multiple disks in parallel.
Which of the following are advantages of NAS storage systems over file servers?
High stability and reliability
Diverse services and powerful functions
Large storage space
High data security
Which of the following statements about block virtualization technology for Huawei storage systems are correct?
Data is distributed to all disks, fully leveraging the read/write processing capability of a storage system.
A RAID group is formed in the unit of physical disks.
A CKG is the unit used in applying for space, releasing space, and relocating data.
Data reconstruction efficiency improves significantly.
Which statements are true about distributed storage?
Supports large-scale horizontal expansion.
Supports expansion by addition of nodes to increase both computing capability and storage space
Does not support elastic EC for data redundancy protection.
Supports storage resource pooling and virtualization
Which statements are true about strips and stripes?
A strip is the minimum unit for data reads and writes in a disk.
Multiple strips form a stripe
A stripe consists of one or more consecutive sectors in a disk.
A stripe consists of strips of the same location or ID on multiple disks in the same array
After logging in to the CLI of a storage system, you can query, set, manage, and maintain the storage system. Which statements are true?
On the CL, you can press key "Tab" to use the command completion function.
On the CLI, you can press the space bar to use the command completion function.
When you press the Tab key for command completion, all possible values are displayed.
When you press the space bar for command completion, only the current field is completed.
Which of the following are correct steps in a LAN-based backup job?
Agent on application server sends data to the backup device.
Agent on application server sends data to backup media server.
Backup media server sends data to the backup device.
Backup server sends a "start-backup" command to the backup device.
