Regarding Ext3 file system failure repair, which of the following statements is wrong?
- A . You can use the mount command to check whether the file system is mounted in a read-only state.
- B . For damaged file systems in the mounted state, directly execute fsck to repair them
- C . Do not arbitrarily perform fsck on a normally running file system
- D . File system failures can be located by collecting Pvarflog/message host log information
When adding a host to a SmartQoS policy, which of the following functions is not supported?
- A . A host can only be added to one policy.
- B . Burst flow control management
- C . Flow Control Management
- D . Minimum protection
Huawei’s all-flash storage products use certain technologies to count and analyze data activity, and dynamically match data of different activity levels with storage media of different characteristics.
Which of the following technologies fits the above description?
- A . SmartThin
- B . SmartTier
- C . HyperSnap
- D . SmartQos
FC HBA card is mainly used to connect which of the following devices?
- A . Fiber Array and IP Storage Array
- B . Server to Server
- C . Server and fiber array
- D . Server and IP-SAN array
Intelligent classification technology needs to be deployed on devices with different media types. Data is monitored in real time. Data that has not been accessed for a long time will be marked as which of the following types?
- A . Hot Data
- B . Fast Data
- C . Slow Data
- D . Cold data
In the SAS protocol architecture, which of the following describes the interface between the link layer and the transport layer?
- A . Transport layer
- B . Port layer
- C . Link layer
- D . Physical layer
A certain tool supports multi-vendor device adaptation and can achieve unified management of hardware devices such as server devices, storage devices, network devices, as well as server operating systems and virtual resources; it has a componentized architecture and can build an enterprise operation and maintenance platform on demand; it has lightweight and Web-based features, which can reduce system maintenance and upgrade costs. Which of the following tools fits the description above?
- A . eService
- B . SmartKit
- C . SmartTool
- D . eSight
In Huawei OceanStor Dorado V6 series products, which color does the disk enclosure positioning indicator light up in?
- A . Blue
- B . Green
- C . White
- D . Yellow
In a storage system, when the capacity of alarm information reaches the threshold set by the system, which of the following can be set to prevent the loss of alarm data?
- A . System Settings
- B . Dump
- C . Alarm Notification
- D . FTP server
Which of the following statements about storage virtualization is wrong?
- A . Hides the complexity of physical devices
- B . Get rid of the limitation of physical capacity
- C . Information about hardware additions and subtractions can be displayed
- D . Integrate and use existing functions
A company plans to use the National Day holiday when business is not busy to shut down the power supply of computer room I for circuit safety maintenance. After the circuit maintenance is completed, the powered-off equipment needs to be powered on. Which of the following equipment power-on sequence is correct?
- A . External power supply -> server power supply -> switch power supply -> controller box power supply
- B . External power -> server power -> controller box power -> switch power
- C . External power -> controller box power -> server power -> switch power
- D . External power supply -> controller box power supply -> switch power supply -> server power supply
In the IP SAN network architecture, there are many different ways to convert messages on the host side. Which of the following hardware can complete the ICP/IP message conversion?
- A . FC HBA card
- B . RAID card
- C . Front-end shared card
- D . TOE NIC
If an HBA card that supports iSCSI is used to process iSCSI requests, where are the SCSI instructions processed?
- A . HBA card
- B . CPU
- C . Operating System
- D . Network card
Which of the following descriptions of the overall characteristics of the SAN active-active solution is wrong?
- A . Gateway-free active-active architecture, fewer points of failure, and higher system reliability
- B . Combined with the HyperReplication feature, it can be smoothly upgraded to a two-site three-center solution
- C . Meet the business requirements of RTO=0, RPO=0
- D . When a single storage or production center fails, a small amount of data is lost
iSCSI initiator implementation methods are:
① Software Initiator Driver
② TOE card
③ iSCSI HBA card
In order of performance from high to low, which of the following options is correct?
- A . ② > ③ > ①
- B . ③ > ① > ②
- C . ③ > ② > ①
- D . ③ > ① > ②
iSCSI initiator implementation methods are:
① Software Initiator Driver
② TOE card
③ iSCSI HBA card
In order of performance from high to low, which of the following options is correct?
- A . ② > ③ > ①
- B . ③ > ① > ②
- C . ③ > ② > ①
- D . ③ > ① > ②
iSCSI initiator implementation methods are:
① Software Initiator Driver
② TOE card
③ iSCSI HBA card
In order of performance from high to low, which of the following options is correct?
- A . ② > ③ > ①
- B . ③ > ① > ②
- C . ③ > ② > ①
- D . ③ > ① > ②
iSCSI initiator implementation methods are:
① Software Initiator Driver
② TOE card
③ iSCSI HBA card
In order of performance from high to low, which of the following options is correct?
- A . ② > ③ > ①
- B . ③ > ① > ②
- C . ③ > ② > ①
- D . ③ > ① > ②
Check the alarm policy configuration
- A . 1, 2
- B . 3
- C . 1, 2, 3
- D . 2, 3
During routine inspection, an operation and maintenance engineer discovered that the storage device had an alarm and needed to be quickly maintained. Which of the following operations is wrong?
- A . Check system performance and handle related exceptions
- B . Check business status and handle related exceptions
- C . Check the indicator status and handle related abnormalities
- D . Restart the storage device
When configuring SmartQoS, if the user does not configure the priority attribute of the created LUN or file system, which of the following priorities will be used by default?
- A . Medium
- B . High
- C . Low
- D . None
In the DME Storage function features, which of the following options does not belong to the protection automation feature?
- A . Visible copy
- B . Replica Quota
- C . Copy Creation
- D . Replica Enablement
Which of the following is the scale-out expansion technology used by Huawei OceanStor Dorado V6 storage?
- A . SCSI Scale-Out
- B . PCIe Scale-Out
- C . SAS Scale-Out
- D . IP Scale-Out
Compared with the internal bus IO of traditional DMA, RDMA realizes the direct transfer of which of the following resources between the application software at two endpoints through the network?
- A . Process
- B . Threads
- C . Data disk
- D . Cache
Which reconstruction method is used when writing to the disk during the period when the disk is inaccessible?
- A . Full Reconstruction
- B . Local Reconstruction
- C . Restore and reconstruct
- D . Local Refactoring
The virtualized data in the storage pool consists of two parts: metadata volume and data volume. Which of the following does the metadata volume not contain?
- A . Where the data is stored
- B . Data volume ID
- C . LUN ID
- D . DCL
The iSCSI protocol is a SCSI instruction set that runs on top of the IP protocol. For a TCP message that encapsulates the iSCSI protocol, which of the following parts is not included?
- A . iSCSI Header
- B . TCP Header
- C . IP Header
- D . iSCSI data
A company’s IT system administrator is responsible for the configuration management of Huawei’s OceanStor hybrid flash storage system. If all other conditions are met and only the answer description is considered, which of the following SmartMigration configuration is correct?
- A . Configure LUN A and LUN B to belong to different controllers, use LUN A as the source LUN and LUN B as the target LUN, and complete the SmartMigration configuration.
- B . Configure LLUN A and LUN B respectively, and create a snapshot for LUN A. Then, use LUNA as the source LUN and LUN B as the target LUN to complete the SmartMigration configuration.
- C . Configure Thick LUN A and Thin LUN B to belong to the same controller, use LUN A as the source LUN and LUN B as the target LUN, and complete the SmartMigration configuration.
- D . Configure LUN A and LUN B separately, map LUN B to a host, and then use LUN A as the source LUN and LUN B as the target LUN to complete the SmartMigration configuration.
Which of the following descriptions about the high reliability of Huawei OceanStor Dorado all-flash storage series is wrong?
- A . RAID2.0+ underlying virtualization
- B . All SSD hard drives, with high IOPS and low latency
- C . Advanced data protection technologies, such as HyperSnap, HyperReplication, etc.
- D . Component failure protection, dual redundancy design and A/A working mode
After the head moves to the track where the data is located, it waits for the required data block to continue to rotate under the head. Which of the following parameters does the above description define?
- A . Average moving time
- B . Average seek time
- C . Average waiting time
- D . Average latency time
A large e-commerce company uses Huawei Ocean Storage hybrid flash memory system to host its core services. Which of the following statements about the SSD controller chip used in the storage system is wrong?
- A . It has a built-in FTL algorithm
- B . It cannot determine the read and write positions
- C . It supports multiple interfaces
- D . It supports multiple types of media
In Huawei’s all-flash storage product OceanStor Dorado V6, what types of storage media can the SmartCache Pool consist of?
- A . SATA disk
- B . SCM disk
- C . SSD
- D . SAS disk
Which of the following descriptions about IP SAN and FC SAN is wrong?
- A . IPSAN has lower cost
- B . IP SAN uses the existing IP network
- C . FC SAN is compatible with all IP network devices
- D . FC SAN is more expensive
Which of the following descriptions about NAS architecture is wrong?
- A . UNIX and Windows users cannot directly share the same data through NAS
- B . NAS is based on file-level sharing
- C . Using NAS eliminates the need to create multiple file servers
- D . NAS enables customers to share files quickly and directly with minimal storage management overhead
Which of the following layers is not included in the OceanStor Pacific block storage system architecture?
- A . Storage driver layer
- B . Storage Network Layer
- C . Storage Service Layer
- D . Storage engine layer
To achieve load balancing between controllers, which of the following parameters should Huawei Multipath enter in the "upadm set workingmode=[]" command line?
- A . 0
- B . 3
- C . 2
- D . 1
When using 8 2TB hard disks to build a RAID, which of the following RAID types can tolerate the largest number of failed hard disks?
- A . RAID 3
- B . RAID TP
- C . RAID 5
- D . RAID 6
Hard disk striping is a form of RAID data organization. Which of the following correctly describes the definition of stripe width?
- A . Stripe capacity
- B . Number of stripes in a disk group
- C . The number of disks used by the disk group when striping
- D . Number of disks included in the stripe
A company needs a storage array with better data security and to ensure that the storage space utilization rate is greater than 60%. Which of the following RAID types should the company choose?
- A . RAID 6
- B . RAID 1
- C . RAID 10
- D . RAID 0
Compared with the SCSI protocol, which of the following is not an advantage of storage FC network?
- A . Improve scalability
- B . Increase transmission distance
- C . Cost reduction
- D . Solve security issues
In a system that supports iSCSI, the iSCSI node encapsulates the instructions and data to form which type of data packet is ultimately transmitted in the IP network?
- A . SCSI Packet
- B . Ethernet data frame
- C . IP Packet
- D . isCSI package
SSD is mainly composed of a control unit and a storage unit. Which of the following options does not belong to the SSD control unit?
- A . Host Interface
- B . NAND Flash particles
- C . SSD controller
- D . DRAM
In performance monitoring, for small I/O application scenarios, which of the following indicators should storage performance focus on?
- A . Time
- B . Capacity
- C . Bandwidth
- D . IOPS
Which of the following storage management software can a company user use to automatically report alarms of storage devices connected to it to the Huawei Service Support Center?
- A . DeviceManager
- B . SmartKit
- C . CLI
- D . eService
When creating a remote replication pair, if "Initial Synchronization" is set to "Master and slave resource data are consistent, no synchronization required", which of the following options will be displayed when the pair is created?
- A . To be restored
- B . Split
- C . Synchronizing
- D . Normal
Company M plans to build an off-site disaster recovery center with a disaster recovery distance of 1000KM. The company’s daily business growth is 2GB, the data synchronization time is up to 8 hours a day, and the bandwidth utilization rate is about 70%.
In this scenario, what is the minimum bandwidth required for remote replication network?
- A . 665KBps
- B . 702KBps
- C . 785KBps
- D . 834KBps
When company employees look for payroll in MYSQL, what kind of data does it belong to?
- A . Metadata
- B . Semi-structured data
- C . Unstructured data
- D . Structured data
Which of the following storage network architectures can provide file-level sharing services for hosts?
- A . NAS
- B . FC SAN
- C . DAS
- D . IP SAN
Which of the following operations does a Hyper CDP consistency group not support?
- A . Create
- B . Rollback
- C . Delete
- D . Synchronization
Which of the following compression methods does Huawei’s all-flash storage series not support?
- A . Online compression
- B . Lossless Compression
- C . Post-compression
- D . Lossy compression
Which of the following descriptions about Thin LUN is correct ?
- A . The capacity of Thin LUN is the actual physical space.
- B . Thin LUN cannot be directly mapped to the host for use
- C . The capacity of the Thin LUN cannot be larger than the maximum physical space provided by the storage
- D . The capacity of Thin LUN is not the actual physical space
Which of the following statements about Thick LUN and Thin LUN is wrong ?
- A . After the data in the Thin LUN is deleted, the space will be reclaimed to the storage pool.
- B . At the smallest granularity, Thin LUN is Grain
- C . At the smallest granularity, Thick LUN is Extent
- D . Thick LUN needs to apply for space every time 10 to write data
Which of the following is not a basic step in data processing?
- A . Input
- B . Processing
- C . Sorting
- D . Output
What problem does the emergence of the NVMe standard mainly solve?
- A . Compatibility issues between different PCIeSSDs in the host
- B . Transmission consistency issues under different PCIe standards
- C . Compatibility issues between different PCIe standard hardware interfaces
- D . Driver compatibility issues between different PCIe SSDs
How many NVMe SSDs does the OceanStor Pacific 9950 support at most?
- A . 36
- B . 80
- C . 25
- D . 72
Both RoCE and iWARP belong to RDMA technology. Which of the following networks are they based on?
- A . IB Network
- B . Ethernet
- C . FC network
- D . IPX network
In the PCIe protocol structure, which of the following options is not included in the PCIe device hierarchy?
- A . Presentation layer
- B . Transaction Layer
- C . Physical layer
- D . Data Link Layer
Which of the following options is not a feature of the Smart Acceleration feature?
- A . Tier/Cache Integration
- B . Default recommended quota for the performance layer system
- C . The performance layer does not need to be exclusive
- D . Tier/Cache are independent of each other
RDMA can help with transport offloading, shifting packet routing from the operating system to which of the following levels?
- A . Chip level
- B . Process level
- C . Application level
- D . Memory level
Which of the following descriptions of the features of HyperClone is wrong?
- A . Support full synchronization and differential synchronization
- B . Support forward synchronization and reverse synchronization
- C . Does not support consistency groups
- D . The target LUN can be read and written immediately without waiting for the background copy to complete
Which of the following functions cannot be implemented in OceanStor UltraPath?
- A . Path selection between host and storage device
- B . Controlling access to storage devices
- C . Storage resource allocation
- D . Improve the path reliability between the host and storage devices
Which of the following is correct about HyperClone?
- A . Metadata copy of the source LUN
- B . Incremental data copy of the source LUN
- C . Full data copy of the source LUN
- D . Differential data copy of the source LUN
Which of the following descriptions about CIFS and NFS is wrong?
- A . CIFS is easier to use than NFS, but additional software must be installed on the host.
- B . NFS is often used for file service access on LINUX hosts
- C . CIFS is often used to access Windows host file services
- D . When a link fails, the NFS protocol can automatically restore the link
Which of the following descriptions about RDMA (Remote Direct Memory Access) is wrong?
- A . High throughput
- B . Low response
- C . Low latency
- D . Less CPU resource usage
Which of the following license operations cannot be performed in the License Management interface of DeviceManager?
- A . Importing a license
- B . Loading the license
- C . Update the license
- D . Activate the license
In the DeviceManager interface, which of the following files can be used to collect hard disk operation logs, I/O statistics and life, SMART and other log information?
- A . Diagnostic Files
- B . Configuration Information
- C . DHA operation log
- D . Recent logs
Which of the following access control policies is used by OceanStor Pacific?
- A . ABAC
- B . PBAC
- C . ACL
- D . RBAC
Which of the following descriptions about Huawei storage (such as Huawei OceanStor hybrid flash) snapshots is wrong?
- A . Snapshots can be generated instantly, quickly obtaining a consistent copy of the original LUN
- B . After the snapshot LUN is mapped to the host, data can be read and written
- C . When the snapshot is inactive, the data I/O write process is the same as when no snapshot is created.
- D . After creating a snapshot, during the redirection write process, overwriting does not require reallocation of space
Which of the following CLI commands can storage engineers use to query the version information of the current storage system so that they can accurately determine the supporting software version during maintenance?
- A . show system
- B . show system general
- C . show license
- D . show license_active
In Huawei all-flash storage, which of the following is the minimum interval for creating HyperCDP in a scheduled HyperCDP plan?
- A . 1 second
- B . 2 seconds
- C . 3 seconds
- D . 5 seconds
Storage systems have multiple ports. Which of the following ports is a virtual port that is assigned a unique IP address and is used to carry host services?
- A . Ethernet port
- B . Bind port
- C . VLAN
- D . Logical port
Storage systems are mainly expanded in two ways, Scale-Up and Scale-Out. Which of the following descriptions of these two expansion methods is wrong?
- A . The Scale-Up model is mainly used in the cloud computing field
- B . When using Scale-Out for expansion, management complexity will increase later
- C . When using Scale-Out for expansion, the focus is on increasing the number of nodes
- D . When using Scale-Up for expansion, the focus is on increasing the performance of a single node
In order to ensure the security of business data, an enterprise creates a snapshot of the business LUN on the storage at every hour every day. One day, a new employee of the company accidentally deleted business data generated at 9:30 am at 11:30 am. In order to retrieve the deleted business data, which of the following snapshots can be restored to minimize the amount of business data lost?
- A . 11:00
- B . 09:00
- C . 10:00
- D . 12:00
When dual-controller storage is running in HA mode, only one of the two controllers is working at the same time, and the other is in which of the following states?
- A . Waiting and synchronization
- B . Synchronization and Monitoring
- C . Monitoring
- D . Waiting, synchronizing, and monitoring
When using which of the following algorithms, will the multipath select each path in turn to send I/O data based on the currently available paths of the application server and storage system?
- A . Bubble Algorithm
- B . Minimum Task Algorithm
- C . Minimum Queue Depth Algorithm
- D . Polling algorithm
A manufacturer’s distributed storage system was put into operation for 100 days, running 24 hours a day. A failure occurred on the morning of the 10th day, and it took 1 hour to recover from the failure. A failure occurred on the morning of the 25th day. It took 4 hours to recover from the failure. A failure occurred on the morning of the 80th day, and it took 1 hour to recover from the failure. The availability of the software system is ()
- A . 99.25%
- B . 99.75%
- C . 97.25%
- D . 97.75%
Which of the following is an edge IT infrastructure solution with integrated design and whole cabinet delivery, mainly used in edge branch offices and vertical industry edge application scenarios?
- A . Huawei Edge Data Storage
- B . Huawei Distributed Storage
- C . Huawei All-Flash Storage
- D . Huawei Hybrid Flash Storage
Which of the following is correct?
Description 1: ICT infrastructure should be built with high-end equipment with high reliability, so there is no need to build backup
Description 2: Servers are usually used to refer to computers with higher specifications in some enterprises. These computers usually install some important software in the enterprise and run important business.
- A . Description 1 and Description 2 are both correct
- B . Description 1 is correct, description 2 is wrong
- C . Description 1 is wrong, description 2 is correct
- D . Both description 1 and description 2 are wrong
Which of the following descriptions about OceanProtect backup storage full-scenario data protection is wrong?
- A . Full disaster recovery for hot data
- B . Warm data hot backup
- C . Warm data and warm archive
- D . Warm archive of cold data
There are 96 disks in a disk domain of Huawei OceanStor hybrid flash storage system. In order to fully utilize the performance of the disk, it is recommended that the total number of LUNs in the disk domain should not be less than ()
- A . 4
- B . 12
- C . 32
- D . 96
Which of the following descriptions of data compression characteristics is wrong?
- A . Reorganize the data
- B . Extend the service life of SSD
- C . Some data information may be lost
- D . Reduce the storage space occupied by data
Which of the following descriptions about NFS (Network File System) is wrong?
- A . A network file sharing protocol commonly used in Linux/Unix environments
- B . NFS only allows clients with the same operating system to share files with each other over the network
- C . NFS is used for independent transmission, so it uses TCP or UDP
- D . NFS uses a client/server architecture
The customer’s production environment server performance is high, the production network resources are relatively tight, the budget cost is limited, the daily backup data volume is 1~2T, and the backup time is 3 hours. Which backup networking method is most suitable?
- A . 10 GE lan-base
- B . FC network
- C . server-free
- D . 1GE lan-free reference
Which of the following purposes is the FE 25Gb RoCE module supported by OceanStor Dorado V6 used for?
- A . Connecting to the application server
- B . Connect to the smart disk enclosure
- C . Active-Active Arbitration
- D . Connect to SAS disk enclosure
Which of the following descriptions of data is wrong?
- A . Data can be entered into a computer and processed by a computer program
- B . Data is a general term for numbers, letters, symbols, etc. that have certain meanings.
- C . Data is information that has been processed and has logical relationships
- D . Data can be input into a computer for processing
A company needs to make a backup strategy. The company’s backup data volume is small and it hopes to back up in a short time and save storage space to the maximum extent. What type of backup do you recommend?
- A . Full backup
- B . Cumulative incremental backup
- C . Differential incremental backup
A customer’s initial backup capacity is 1T, and the average daily data increment is 10GB. The backup strategy is to do a full backup every Monday, and a differential backup every Tuesday to Sunday. The storage period of full and incremental data is 4 weeks. Without considering deduplication/redundancy ratio/replication, please calculate the required backend capacity should be no less than ().
- A . 4940GB
- B . 5280GB
- C . 4280GB
- D . 5940GB
Which of the following descriptions of the difference between DAS and SAN is wrong?
- A . SAN redundant networking provides higher reliability
- B . Both DAS and SAN are external storage, so storage resources can be easily shared
- C . DAS is suitable for small and medium-sized LAN environments with only a few servers
- D . SAN is suitable for mid-to-high-end storage application environments, such as critical databases, centralized storage, large-scale storage, backup and disaster recovery, etc.
When Huawei distributed storage block storage is connected to OpenStack, which of the following drivers should be used?
- A . Swift
- B . Manila
- C . S3
- D . Cinder
Which of the following does not belong to intelligent many-core technology?
- A . Multi-stream partitioning technology
- B . CPU grouping technology
- C . Inter-core lock-free technology
- D . Business Grouping Technology
A company purchased a set of Huawei storage services that need to provide both block services and file services. Which of the following is wrong?
- A . CIFS/NFS are both C/S modes
- B . Support for non-domain environments
- C . Support CIFS and NFS deployment on the same network
- D . Support AD domain environment
Which of the following descriptions of the SmartQos feature of Huawei hybrid flash storage is wrong?
- A . The system will schedule I/O requests of different priorities according to the weights of LUNs of different priorities, giving priority to cache allocation requests of higher priority services.
- B . When the disk usage is too high, in order to ensure the reliability of the disk, the system will add delay to the low priority I/O to control it, while trying not to affect the high priority I/O
- C . When concurrent resources are insufficient, high-priority I/Os will be accepted first and low-priority I/Os will be rejected to ensure that high-priority services get more concurrent data.
- D . When a CPU resource bottleneck occurs, low-priority services can use CPU resources only after high-priority services are completed.
Center A has 3000G data, Center B has 1500G data, the deduplication rate is 3, and the data of Center B is copied to Center A. How much space does Center A need at least?
- A . 3500
- B . 4500
- C . 1500
- D . 3000
Which of the following commands is used to query the function configuration information of the license file that has been imported into the storage system?
- A . show system general
- B . show license
- C . show license_active
- D . show system
Which of the following application solutions is not supported by LUN migration?
- A . Change the RAID level of a LUN
- B . Change the WWN of a LUN
- C . Change LUN type (thick or thin)
- D . Change the read and write performance of a LUN
In a traditional RAID group, when a certain number of hard disks fail, the entire RAID group can prevent data loss, and the data recovery process has not yet started. What is this state?
- A . Normal work
- B . Demotion
- C . Invalidation
- D . Refactoring
SmartQoS policy provides a multi-dimensional process. Which of the following objects cannot be added to the policy?
- A . LUN
- B . LUN group
- C . Host Group
- D . File system
During data migration, what unit does the storage pool use to identify data activity?
- A . Data Block
- B . Single file
- C . LUN
- D . Hard disk
Which of the following descriptions about SSD is wrong?
- A . SSD is composed of storage units and storage chips. Its interface specifications and definitions, functions and usage methods are exactly the same as those of ordinary hard disks.
- B . SSD uses Flash chips as storage media, and has no data search time, delay time, or seek time compared to HDD.
- C . The biggest disadvantage of SSD solid state drives is that they are not removable, and data protection is controlled by power supply, so they cannot be used in various environments.
- D . The Chinese name for SSD is solid state drive
Which of the following descriptions about RAID 2.0+ is wrong?
- A . One-to-many rapid refactoring mode
- B . All hard disks in the storage pool participate in the reconstruction
- C . Greatly reduce the impact on business during the reconstruction process
- D . Data recovery speed is 20 times faster than traditional RAID
The customer’s business is very important and has a large amount of data. The customer needs the best possible business continuity. At the same time, the customer needs to be able to provide services to the outside world even when encountering natural disasters (floods/earthquakes). If you are asked to design a disaster recovery network, which of the following networks would you choose?
- A . Set up two data centers in the same city for synchronous replication, and another data center in a different location for asynchronous remote replication
- B . Set up two data centers in the same city to form a dual-active disaster recovery network
- C . Set up two data centers in the same city for active-active operation and another data center in a different location for asynchronous remote replication
- D . Set up a data center locally and remotely to form a dual-active disaster recovery network
Which of the following descriptions about SmartMatrix is wrong?
- A . Using Smartlatrix architecture, a single system can expand to unlimited controllers
- B . SmartMatrix combines the advantages of Scale-Up and Scale-Out
- C . Smartlatrix is implemented based on the front-end shared card
- D . SmartMatrix makes it possible to fully interconnect the back-end disk enclosure and 8 controllers
Which of the following are not basic components of SAN architecture?
- A . Server
- B . Backend storage system
- C . Switch
- D . Router