Question 1

There are two descriptions about backups, the correct ones are:
Description 1: The disaster recovery solution does not need to consider whether it is backed up on
tape or hard disk.
Description 2: The backup plan should consider the worst case.

Accepted Answer

C

Explanation: The choice of backup media, such as tape or hard disk, is a critical component of a disaster recovery (DR) solution. This decision directly influences key metrics like Recovery Time Objective (RTO) and Recovery Point Objective (RPO), as well as overall cost and data retention capabilities. Disk-based backups typically offer faster recovery, while tape is often preferred for long-term, low-cost, off-site archival. Therefore, a DR solution must consider the media type. Conversely, a robust backup and DR plan must be designed by considering the worst-case scenario. This ensures the organization can recover from the most severe potential disruptions, such as a complete data center failure, thereby guaranteeing business continuity.

Question 2

What are the common time indicators for measuring the reliability of a system? (Multiple choice)

Accepted Answer

C, D

Explanation: System reliability is quantified using several time-based metrics. Mean Time Between Failures (MTBF) is a primary indicator for repairable systems, representing the average operational time between failures. Average failure time, also known as Mean Time To Failure (MTTF), is a key indicator for non-repairable components, measuring the average lifespan until failure. Both are fundamental time-based indicators used to measure system reliability and are explicitly covered in storage technology principles.

Question 3

According to the changes in the amount of backup data, the types of backup can be divided into:

Accepted Answer

B, C, D

Explanation: The classification of backup types based on the amount of data processed is a fundamental concept in data protection. A full backup copies the entire selected dataset. An incremental backup copies only the data that has changed since the most recent backup of any type (full or incremental). A differential backup copies all data that has changed since the last full backup. These three methods are directly defined by the volume of data they handle in relation to a previous backup state.

Question 4

Description 1: There is an interconnection line between the controllers of the storage system. If the
controller is broken, it belongs to it.
The working controller of the managed LUN will be switched to a working controller.
Description 2: The working controller and home controller of a LUN must be unified into one
controller.

Accepted Answer

D

Explanation: Description 1 is correct. Huawei storage systems utilize a dual-controller, active-active architecture. The controllers are linked by a high-speed interconnect (like PCIe) for cache mirroring and state synchronization. This design provides high availability. If a controller fails, the system automatically and non-disruptively transfers control of its LUNs to the surviving peer controller, which then handles all I/O operations. This process is known as a controller failover. Description 2 is incorrect. While it is best practice for a LUN's working controller (the one currently processing I/O) and its home controller (the default or preferred owner) to be the same for optimal performance, it is not a mandatory state. During a failover, the working controller will differ from the home controller. The system is designed to function in this "trespassed" state until the original controller is restored and a failback operation is performed.

Question 5

What is wrong with the following description of NAS? (Multiple choice)

Accepted Answer

C, D

Explanation: Network Attached Storage (NAS) is fundamentally designed as a centralized file-sharing solution. Its primary purpose is to allow multiple, heterogeneous clients to access and share files concurrently over a standard IP network using protocols like CIFS/SMB and NFS. Furthermore, a single client operating system has no inherent limitation that prevents it from connecting to and mounting file systems from multiple different NAS devices simultaneously. Statements suggesting otherwise misrepresent the core architecture and utility of NAS. In contrast, clustering for failover and centralized management are common, advanced features of enterprise NAS systems.

Question 6

Among the components of the mechanical disk, the parts responsible for reading and writing data are:

Accepted Answer

B

Explanation: The read/write head is the core component responsible for the data transfer process in a mechanical hard disk drive (HDD). It is a tiny transducer that floats nanometers above the spinning platter's surface. To write data, it generates a precise magnetic field to alter the magnetic orientation of particles on the platter. To read data, it detects the existing magnetic fields from the platter and converts them back into electrical signals. The other listed components are essential for the drive's operation but do not perform the actual reading or writing.

Question 7

Which of the following three disaster recovery technologies are commonly used? (Multiple choice)

Accepted Answer

A, C, D

Explanation: Disaster recovery (DR) solutions are commonly categorized based on the architectural layer where data replication is implemented. The three primary and most widely adopted methods are: 1. Host-based: Replication is managed by software running on the host servers, which intercepts I/O requests and sends copies to a remote site. 2. Array-based: Replication is handled by the storage system (array) itself, operating independently of the hosts and applications. This is a core feature in enterprise storage like Huawei's OceanStor series. 3. Application-based: The application (e.g., a database like Oracle or SQL Server) manages its own data replication, ensuring transactional consistency. These three layers represent the fundamental approaches to data replication for disaster recovery.

Question 8

According to the disaster tolerance effect, the disaster tolerance level can be divided into: (multiple choice)

Accepted Answer

Answer available on page.

Question 9

Which of the following are correct steps in a LAN based backup job? (Multiple Choice)

Accepted Answer

B, C

Explanation: In a standard LAN-based backup architecture, the process is centrally managed by a backup server. The data flow begins when the agent, installed on the application server (client), reads the data designated for backup. This data is then transmitted over the production LAN to the backup media server. The media server's function is to receive this data stream and write it to the connected physical backup storage device, such as a tape library or a disk-based backup system. This entire data transfer process utilizes the existing local area network.

Question 10

SmartThin is a storage space management provided by Huawei OceanStor V3 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.

Accepted Answer

A

Explanation: The statement is a correct description of Huawei's SmartThin technology. SmartThin is Huawei's implementation of thin provisioning for its OceanStor V3 storage systems. It is based on storage virtualization, which allows the system to present a logical unit (LUN) to a host that is larger than the physical storage capacity currently allocated to it. Physical space is drawn from a shared storage pool and allocated on-demand, only when new data is actually written. This method significantly improves storage utilization, reduces initial hardware acquisition costs, and simplifies capacity planning.

Question 11

What is Network Functions Virtualization(NFV)?

Accepted Answer

B

Explanation: Network Functions Virtualization (NFV) is an architectural concept that uses IT virtualization technologies to virtualize entire classes of network node functions into building blocks that may be connected, or chained, together to create communication services. The core principle of NFV is the decoupling of network functions, such as routing, firewalling, and load balancing, from dedicated, proprietary hardware appliances. These functions are instead implemented as software, known as Virtual Network Functions (VNFs), which can run on standard commercial off-the-shelf (COTS) servers, switches, and storage. This approach provides greater agility, flexibility, and cost-efficiency compared to traditional hardware-based networks.

Question 12

Which of the following are the 3 layers of SCSI Target Model? (Multiple Choice)

Accepted Answer

B, C, D

Explanation: The SCSI Target Model, as implemented in modern storage systems and covered in the HCIA-Storage curriculum, is a three-layered architecture designed for modularity and flexibility. 1. Port Layer (Frontend): This layer handles the transport-specific protocols, such as iSCSI, Fibre Channel (FC), or FCoE. It is responsible for receiving SCSI commands from the network or fabric and passing them to the middle layer. 2. Middle Layer (Target Core): This is the protocol-agnostic core of the SCSI target. It processes the SCSI commands, manages task sets, and orchestrates the data flow between the port and device layers, independent of the specific transport or backend storage. 3. Device Layer (Backend/Backstore): This layer interacts directly with the underlying storage media. It translates the SCSI commands into operations for the specific backend, which could be a physical disk, a logical volume (LUN), or a file.

Question 13

For random access to mechanical disks, the most significant impact on the time it takes to complete an IO is:

Accepted Answer

A

Explanation: The total time to complete an I/O operation on a mechanical hard disk drive (HDD) is the sum of seek time, rotational latency, and data transfer time. For random access patterns, the read/write head must physically move across the disk platters to locate the correct track. This mechanical movement, known as seeking, is the most time-consuming part of the operation. Compared to the electronic speed of data transfer and the relatively predictable rotational delay, the physical seek time introduces the most significant latency, making it the primary bottleneck for random I/O performance on HDDs.

Question 14

Which mirroring scenarios are mainly used in HyperMirror? (Multiple choices)

Accepted Answer

Answer available on page.

Question 15

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?

Accepted Answer

B

Explanation: For a first maintenance project on a new data center storage system, the primary goal is to verify that all foundational elements for management, monitoring, and support are correctly in place. This includes: A. Checking Toolkit (SmartKit) installation: SmartKit is Huawei's essential tool for deployment, health checks, and maintenance. Verifying its installation ensures the administrator has the necessary tools for current and future tasks. B. Checking eService installation and configuration: eService is crucial for proactive, remote monitoring and automated fault reporting to Huawei's technical support. Its proper configuration is vital for ensuring system reliability and rapid support response. C. Checking alarm policy configuration: Verifying that alarm policies and notification methods (e.g., email, SMS, SNMP) are correctly configured ensures that administrators will be promptly alerted to any system issues. All three are fundamental verification steps in an initial maintenance or post-installation check.

Free Huawei H13-611 Actual Exam Questions