SmartThin is a storage space management technology provided by Huawei OceanStor V3 storage system that allocates storage resources on demand. Based on virtualization technology, SmartThin reduces the deployment of physical storage resources and maximizes the utilization of storage space.
- A . True
- B . False
Regarding the description of the hard disk domain in Huawei RAID 2.0+ technology, which of the following statement is incorrect?
- A . A hard disk domain is a group of hard disks
- B . A hard disk can only belong to one hard disk domain
- C . OceanStor V3 storage system can create one or more disk domains
- D . In a disk domain, disks of the same type must be of the same size and rotational speed
Huawei OceanStor V3 SmartTier feature can be used to place data on the specified disk type.
- A . True
- B . False
A certain bank will launch a set of business systems, which have very high performance and security requirements. The database uses an Oracle database and plans to deploy the Oracle database to a storage system. Then, when creating a RAID group for the Oracle database, the optimal RAID strategy should be:
- A . RAID 1
- B . RAID 5
- C . RAID 6
- D . RAID 10
The SCSI protocol can be used not only for the communication between the host and the disk, but also for the communication between hosts, physical tape libraries, and optical disks, etc.
- A . True
- B . False
In the Huawei OceanStor V3 storage system, a customer plans to deploy a business system. The database uses Oracle data. The average data block size is 16KB. When using the Smart Tier feature, which of the following data migration granularity is the best?
- A . 512KB
- B . 4MB
- C . 32MB
- D . 64MB
Which one of the following methods can achieve the RTO optimization?
- A . Disk-disk
- B . Disk-disk-tape
- C . Remote replication
- D . Virtual tape library
In Huawei OceanStor V3, what unit does Thick LUN apply for space from the storage system?
- A . grain
- B . chunk
- C . stripe
- D . extent
Most of the data generated by the Internet industry is structured data, and this part of the data accounts for about 80% of the total amount of data.
- A . True
- B . False
The following are two statements about cloud computing:
Statement 1: A deployment model of cloud computing is to divide a large physical server into multiple small virtual machines.
Statement 2: A deployment model of cloud computing is to aggregate multiple small physical servers into one large host.
- A . Both Statement 1 and Statement 2 are correct
- B . Statement 1 is correct, Statement 2 is wrong
- C . Statement 1 is wrong, Statement 2 is correct
- D . Both Statement 1 and Statement 2 are wrong
In Huawei OceanStor V3 based on RAID 2.0+, when a user creates a file system, the system will first automatically create a corresponding LUN and generate a file system on the LUN.
- A . True
- B . False
A company belongs to the fields of banking and finance, with a large amount of business data and high security requirements. Which RAID level is suitable for this company?
- A . RAIDO
- B . RAID 1
- C . RAID 5
- D . RAID 10
When there are bad sectors or bad blocks on the hard disk, which reconstruction method is used?
- A . Whole disk reconstruction
- B . Local Remeshing
- C . Restoration reconfiguration
- D . Local remodeling
Regarding the snapshot technology, which of the following statement is incorrect?
- A . When rolling back a file system snapshot, you must cancel the shared mount of the source file system
- B . After opening multiple snapshots of the same file system, roll back to one of the snapshots. After the roll-back is completed, all snapshots after the point-in-time when the target snapshot was created will be deleted
- C . When manually creating a snapshot for a file system, if the product specification limit is exceeded, a new snapshot cannot be created for the file system
- D . When creating a periodic snapshot for the file system, the storage system automatically deletes the earliest created snapshot and automatically generates a new snapshot
For random accessing to mechanical disks, the biggest impact on the time taken to complete an IO is:
- A . Seek time
- B . Rotation delay
- C . Data transfer time
The InfiniBand interface is used as a front-end host interface in Huawei OceanStor V3 unified storage, which can flexibly support the direct connection and multiple networking modes of switch.
- A . True
- B . False
The hard disk domain supports online adding hard disks, and the storage pool supports online expansion.
- A . True
- B . False
Which one of the following operations is a daily maintenance item in the data center storage?
- A . View and handle alarms
- B . Inspect storage devices
- C . Check the room environment
- D . Check the internal environment of the rack
Statement 1: Hyper Mirror one LUN failure, the host business is not interrupted, Hyper Clone primary LUN failure, the host business is interrupted.
Statement 2: Hyper Mirror supports dual copy, and Hyper Clone supports a maximum of 1 primary LUN: 16 secondary LUNs.
- A . Statement 1 is correct, Statement 2 is correct
- B . Statement 1 is correct, Statement 2 is wrong
- C . Statement 1 is wrong, Statement 2 is correct
- D . Statement 1 is wrong, Statement 2 is wrong
HA (High Availability) refers to the ability to continue to access applications in the event of a single component failure of the local system.
In a data center, the downtime is one hour in a year. What is the HA of this data center?
- A . 0.99999
- B . 0.9998858
- C . 0.999999
- D . 0.998934
In the backup system, the data that needs to be backed up must pass through the media server before being stored in the backup media.
- A . True
- B . False
The process of regenerating all user data and parity data on the failed disk in the mirror array or RAID array is called:
- A . Recalculation
- B . Refactoring
- C . Hot backup
- D . Recovery
Due to the earthquake, a company’s IT system went down at 16:00 on November 11 leading to a business halt. By 23:00 on the same day, the IT system resumed operation and the data at 12:00 of that day can be restored. Then what respectively are the RTO and the RPO?
- A . RTO=4 hours, RPO=7 hours
- B . RTO=7 hours, RPO=4 hours
- C . RTO=2 hours, RPO=4 hours
- D . RTO=7 hours, RPO=3 hours
A company needs to make a backup strategy. The company has a small amount of backup data and hopes to back up in a short time and save storage space to the utmost extent.
Which type of backup do you recommend?
- A . Full backup
- B . Cumulative incremental backup
- C . Differential incremental backup
A bank needs to ensure data security and use it to transfer large databases.
Which storage network architecture is suitable for this bank?
- A . IP SAN
- B . FC SAN
- C . DAS
- D . NAS
Xiao Wang, an employee of a company, serves as the administrator of the company’s storage system. When he uses two sets of OceanStor5500 V3 as a disaster recovery solution, he only needs one of the OceanStor5500 V3 configuration data to remote replication software.
- A . True
- B . False
A user of a company can automatically report the alarms of connected storage devices to the Huawei Service Support Center through a piece of management software.
So, which software is this user using?
- A . Device Manager
- B . CLI management interface
- C . Toolkit
- D . eService
When the Windows copy program copies local files to the file system, the file system block size of the Huawei OceanStor V3 storage system is the default, which ensures the full use of storage space.
- A . True
- B . False
The Smart Cache feature in Huawei OceanStor V3 series products can only improve read performance, not write performance.
- A . True
- B . False
What is the synchronization cycle time limit for asynchronous remote replication?
- A . 1s~144min
- B . 3s~144min
- C . 1s~300min
- D . 3s~300min
Among the components of the mechanical disk, the components responsible for reading and writing data are:
- A . Disk
- B . Read/write head
- C . Head arm
- D . Spindle
LAN Free and Server Free are the backup networking modes that have little impact on host performance.
- A . True
- B . False
Regarding database-level disaster recovery, which of the following statement is wrong?
- A . Database-level disaster recovery technology is a disaster recovery solution designed for fixed databases.
- B . Database-level disaster recovery supports WAN, but requires separate hardware support.
- C . Database-level disaster recovery is mainly achieved by transmitting data logs and replaying them at the disaster recovery site.
- D . Database-level disaster recovery, more data will be lost in asynchronous mode, at least one log file will be lost.
Which of the following statements corresponding to RAID 5 and RAID 10 are correct?
- A . The sequential read performance of RAID 5 is lower than that of RAID 10.
- B . With sufficient front-end pressure, the sequential write performance of RAID 5 is higher than that of RAID 10.
- C . The random read performance of RAID 5 is lower than that of RAID 10.
- D . The random write performance of RAID 5 is higher than that of RAID 10.
Xiao Wang, an employee of a small company, uses the CIFS protocol to access shared files on the Linux application server supported by his company’s storage system.
- A . True
- B . False
Regarding the common protocols used by the storage, which of the following statement is correct?
- A . ATA protocol uses parallel interface, which can only be used internally, and there are requirements for cable length.
- B . SCSI protocol does not support hot plug.
- C . A SAS domain can connect 15 devices.
- D . FC protocol compatibility is good, long transmission distance.
Regarding data-level, application-level, and business-level disaster recovery, which of the following statements is correct?
- A . Regarding RTO, data-level <application-level <business-level
- B . Regarding RTO, data-level <business-level <application-level
- C . Regarding TCO, data-level <application-level <business-level
- D . Regarding TCO, business-level <data-level <application-level
From the perspective of the cloud computing business model, Huawei’s network disk belongs to PaaS.
- A . True
- B . False
A company has sufficient client server resources, but the network resources are tight. Which deduplication strategy is suitable?
- A . File-level deduplication
- B . Byte-level deduplication
- C . Source-end deduplication
- D . Target-end deduplication
The server installed Linux operating system accesses the disk array based on the RAID 5 strategy, and the access path sequence is:
- A . File System->Application System->Volume->I/O Subsystem->RAID Controller->Disk
- B . Application System->File System->Volume->I/O Subsystem->RAID Controller->Disk
- C . Application System -> File System -> I/O Subsystem -> Volume -> RAID Controller -> Disk
- D . Application System->File System->Volume->RAID Controller->I/O Subsystem->Disk
The host layer disaster recovery investment is less, and the compatibility is better.
- A . True
- B . False
An enterprise adopts cloud primary and backup data-level disaster recovery. During business planning, storage can be divided into two types of LUNs based on actual needs: protected LUNs and unprotected LUNs. VMs that need disaster recovery are created on the protected LUNs, and only configure array replication for protection LUNs to save the storage space requirements of the disaster recovery center.
- A . True
- B . False
An enterprise adopts cloud primary and backup data-level disaster recovery. During business planning, storage can be divided into two types of LUNs based on actual needs: protected LUNs and unprotected LUNs. VMs that need disaster recovery are created on the protected LUNs, and only configure array replication for protection LUNs to save the storage space requirements of the disaster recovery center.
- A . True
- B . False
An enterprise adopts cloud primary and backup data-level disaster recovery. During business planning, storage can be divided into two types of LUNs based on actual needs: protected LUNs and unprotected LUNs. VMs that need disaster recovery are created on the protected LUNs, and only configure array replication for protection LUNs to save the storage space requirements of the disaster recovery center.
- A . True
- B . False
An enterprise adopts cloud primary and backup data-level disaster recovery. During business planning, storage can be divided into two types of LUNs based on actual needs: protected LUNs and unprotected LUNs. VMs that need disaster recovery are created on the protected LUNs, and only configure array replication for protection LUNs to save the storage space requirements of the disaster recovery center.
- A . True
- B . False
An enterprise adopts cloud primary and backup data-level disaster recovery. During business planning, storage can be divided into two types of LUNs based on actual needs: protected LUNs and unprotected LUNs. VMs that need disaster recovery are created on the protected LUNs, and only configure array replication for protection LUNs to save the storage space requirements of the disaster recovery center.
- A . True
- B . False
An enterprise adopts cloud primary and backup data-level disaster recovery. During business planning, storage can be divided into two types of LUNs based on actual needs: protected LUNs and unprotected LUNs. VMs that need disaster recovery are created on the protected LUNs, and only configure array replication for protection LUNs to save the storage space requirements of the disaster recovery center.
- A . True
- B . False
An enterprise adopts cloud primary and backup data-level disaster recovery. During business planning, storage can be divided into two types of LUNs based on actual needs: protected LUNs and unprotected LUNs. VMs that need disaster recovery are created on the protected LUNs, and only configure array replication for protection LUNs to save the storage space requirements of the disaster recovery center.
- A . True
- B . False
Log in to Device Manager
- 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 the characteristics of the LAN-FREE backup method, which of the following is incorrect?
- A . The backup data stream does not occupy LAN resources
- B . The backup proxy does not affect the performance of the application server
- C . Backup performance is usually higher than that of LAN-BASED
- D . Does not affect user network performance
Statement 1: When Windows mounts a CIFS share with the same IP address (domain name or machine name), the same user can mount one or more shares at the same time, but different users cannot mount the same or different shares.
Statement 2: When Windows mounts the Homedir share with the same IP address (domain name or machine name), multiple users cannot mount multiple shares.
- A . Statement 1 is correct, Statement 2 is correct
- B . Statement 1 is correct, Statement 2 is wrong
- C . Statement 1 is wrong, Statement 2 is correct
- D . Statement 1 is wrong, Statement 2 is wrong
Regarding the Refactoring, which of the following statement is incorrect?
- A . RAID 0, 1, 3, 5, 6 and 10 support Refactoring
- B . Refactoring does not necessarily require a hot spare disk
- C . Refactoring affects RAID performance
- D . Refactoring will not interrupt the RAID business
In a Huawei storage system using RAID 2.0+ technology, a hard disk domain can only contain one type of hard disk.
- A . True
- B . False
A device can only have one WWPN, but there can be multiple WWNNs.
- A . True
- B . False
Two CKs in a CKG of RAID 2.0+ can come from the same hard disk.
- A . True
- B . False
Which of the following is not a backup type?
- A . Full backup
- B . Cumulative incremental backup
- C . Differential incremental backup
- D . Real-time backup
Statement 1: FC protocol and FCoE protocol have different operating environments, different operating channels, and the same protocol stack.
Statement 2: FCoE can only run on 10GE, which solves the problem of short FC transmission distance and packet drop in IP network.
- A . Statement 1 is correct, Statement 2 is correct.
- B . Statement 1 is correct, Statement 2 is wrong.
- C . Statement 1 is wrong, Statement 2 is correct.
- D . Statement 1 is wrong, Statement 2 is wrong
Regarding IOPS, which of the following statement is incorrect?
- A . How many IOs can be performed per second, each IO is fixed according to the size of the written data.
- B . If you each IO write a large piece of continuous data without changing lanes frequently, the number of IOs per second at this time is relatively low.
- C . If the head changes lanes frequently and the data written each time is relatively large, the IOPS should be the lowest value of this disk at this time.
- D . If the smallest data block, such as 512 bytes, is written each time under the condition of not changing lanes frequently, then the IOPS at this time will be the highest value.
Regarding IOPS, which of the following statement is incorrect?
- A . How many IOs can be performed per second, each IO is fixed according to the size of the written data.
- B . If you each IO write a large piece of continuous data without changing lanes frequently, the number of IOs per second at this time is relatively low.
- C . If the head changes lanes frequently and the data written each time is relatively large, the IOPS should be the lowest value of this disk at this time.
- D . If the smallest data block, such as 512 bytes, is written each time under the condition of not changing lanes frequently, then the IOPS at this time will be the highest value.
Regarding IOPS, which of the following statement is incorrect?
- A . How many IOs can be performed per second, each IO is fixed according to the size of the written data.
- B . If you each IO write a large piece of continuous data without changing lanes frequently, the number of IOs per second at this time is relatively low.
- C . If the head changes lanes frequently and the data written each time is relatively large, the IOPS should be the lowest value of this disk at this time.
- D . If the smallest data block, such as 512 bytes, is written each time under the condition of not changing lanes frequently, then the IOPS at this time will be the highest value.
Regarding IOPS, which of the following statement is incorrect?
- A . How many IOs can be performed per second, each IO is fixed according to the size of the written data.
- B . If you each IO write a large piece of continuous data without changing lanes frequently, the number of IOs per second at this time is relatively low.
- C . If the head changes lanes frequently and the data written each time is relatively large, the IOPS should be the lowest value of this disk at this time.
- D . If the smallest data block, such as 512 bytes, is written each time under the condition of not changing lanes frequently, then the IOPS at this time will be the highest value.
Regarding IOPS, which of the following statement is incorrect?
- A . How many IOs can be performed per second, each IO is fixed according to the size of the written data.
- B . If you each IO write a large piece of continuous data without changing lanes frequently, the number of IOs per second at this time is relatively low.
- C . If the head changes lanes frequently and the data written each time is relatively large, the IOPS should be the lowest value of this disk at this time.
- D . If the smallest data block, such as 512 bytes, is written each time under the condition of not changing lanes frequently, then the IOPS at this time will be the highest value.
Regarding IOPS, which of the following statement is incorrect?
- A . How many IOs can be performed per second, each IO is fixed according to the size of the written data.
- B . If you each IO write a large piece of continuous data without changing lanes frequently, the number of IOs per second at this time is relatively low.
- C . If the head changes lanes frequently and the data written each time is relatively large, the IOPS should be the lowest value of this disk at this time.
- D . If the smallest data block, such as 512 bytes, is written each time under the condition of not changing lanes frequently, then the IOPS at this time will be the highest value.
Regarding IOPS, which of the following statement is incorrect?
- A . How many IOs can be performed per second, each IO is fixed according to the size of the written data.
- B . If you each IO write a large piece of continuous data without changing lanes frequently, the number of IOs per second at this time is relatively low.
- C . If the head changes lanes frequently and the data written each time is relatively large, the IOPS should be the lowest value of this disk at this time.
- D . If the smallest data block, such as 512 bytes, is written each time under the condition of not changing lanes frequently, then the IOPS at this time will be the highest value.
Regarding IOPS, which of the following statement is incorrect?
- A . How many IOs can be performed per second, each IO is fixed according to the size of the written data.
- B . If you each IO write a large piece of continuous data without changing lanes frequently, the number of IOs per second at this time is relatively low.
- C . If the head changes lanes frequently and the data written each time is relatively large, the IOPS should be the lowest value of this disk at this time.
- D . If the smallest data block, such as 512 bytes, is written each time under the condition of not changing lanes frequently, then the IOPS at this time will be the highest value.
Regarding IOPS, which of the following statement is incorrect?
- A . How many IOs can be performed per second, each IO is fixed according to the size of the written data.
- B . If you each IO write a large piece of continuous data without changing lanes frequently, the number of IOs per second at this time is relatively low.
- C . If the head changes lanes frequently and the data written each time is relatively large, the IOPS should be the lowest value of this disk at this time.
- D . If the smallest data block, such as 512 bytes, is written each time under the condition of not changing lanes frequently, then the IOPS at this time will be the highest value.
Mapping
Please sort the above steps.
- A . 2->3->1->4->5->6->7->8
- B . 1->2->3->4->5->6->7->8
- C . 2->3->1->4->8->7->5->6
- D . 7->5->1->3->2->4->8->6
The data replication technology based on the SAN network is a storage area network (SAN) between the front-end application server and the back-end storage system, adding a layer of intelligent switches, the front-end is connected to the server host, and the back-end is connected to the storage device.
- A . True
- B . False
Semi-structured data is generally self-describing, and the structure and content of the data are mixed, and there is no obvious distinction.
- A . True
- B . False
Statement 1: A RAID composed of several hard disks is called a physical volume.
Statement 2: RAID 5 can increase the read and write speed and provide a certain degree of data security, but when a single hard disk fails, the read and write performance will be greatly reduced.
- A . Statement 1 is correct, Statement 2 is correct.
- B . Statement 1 is correct, Statement 2 is wrong.
- C . Statement 1 is wrong, Statement 2 is correct.
- D . Statement 1 is wrong, Statement 2 is wrong.
Statement 1: A RAID composed of several hard disks is called a physical volume.
Statement 2: RAID 5 can increase the read and write speed and provide a certain degree of data security, but when a single hard disk fails, the read and write performance will be greatly reduced.
- A . Statement 1 is correct, Statement 2 is correct.
- B . Statement 1 is correct, Statement 2 is wrong.
- C . Statement 1 is wrong, Statement 2 is correct.
- D . Statement 1 is wrong, Statement 2 is wrong.
Statement 1: A RAID composed of several hard disks is called a physical volume.
Statement 2: RAID 5 can increase the read and write speed and provide a certain degree of data security, but when a single hard disk fails, the read and write performance will be greatly reduced.
- A . Statement 1 is correct, Statement 2 is correct.
- B . Statement 1 is correct, Statement 2 is wrong.
- C . Statement 1 is wrong, Statement 2 is correct.
- D . Statement 1 is wrong, Statement 2 is wrong.
Statement 1: A RAID composed of several hard disks is called a physical volume.
Statement 2: RAID 5 can increase the read and write speed and provide a certain degree of data security, but when a single hard disk fails, the read and write performance will be greatly reduced.
- A . Statement 1 is correct, Statement 2 is correct.
- B . Statement 1 is correct, Statement 2 is wrong.
- C . Statement 1 is wrong, Statement 2 is correct.
- D . Statement 1 is wrong, Statement 2 is wrong.
Port of the local controller
- A . 1->2->3
- B . 2->1->3
- C . 3->1->2
- D . 2->3->1
Regarding the characteristics of the four disaster recovery modes of active-active, hot standby, warm standby, and cold standby, which of the following statement is wrong?
- A . The RTO time of the data center adopting the cold standby mode is long and unpredictable.
- B . The data center with the active-active mode has the shortest RTO time.
- C . When the service is unavailable due to a data center failure, the hot standby and active-active modes can automatically switch services with software, while the warm standby mode requires manual intervention, and the cold standby mode requires strong manual intervention.
- D . Hot standby mode requires the highest software cost.
What is the default multi-path load balancing strategy used by Huawei OceanStor V3 storage products?
- A . Polling
- B . Minimum queue depth
- C . Minimal task
- D . Minimum IO number
Regarding the benefits and necessity of building a disaster recovery system for enterprises, which of the following statement is wrong?
- A . Can avoid major losses and reduce corporate risks
- B . Comply with policies and regulations and meet industry regulatory requirements
- C . It can simplify the operation and maintenance work and avoid the impact of emergencies
- D . Consider reducing the level of disaster preparedness in areas where there are fewer natural disasters
IP drift supports drifting between different types of interface modules.
- A . True
- B . False
One port of a host connected to the switch cannot belong to multiple zones, but can only be divided into one zone.
- A . True
- B . False
Hybrid cloud is a solution that uses both private cloud and public cloud at the same time.
- A . True
- B . False
In the Huawei OceanStor V3 storage system, one LUN can create multiple snapshots, but only one snapshot can be in the activated state.
- A . True
- B . False
When using the NFS protocol, adding a client and setting read and write permissions will have an impact on performance.
- A . True
- B . False
The cloudification of IT architecture is moving from "separation" to "convergence". What does convergence mean?
- A . Convergence of IT infrastructure
- B . Convergence of applications and servers
- C . Convergence of hardware and software
- D . Multi-application sharing, open "cloud computer"
Regarding the steps of SAN synchronous replication, which of the following is in the correct order?
(1) The production storage receives the host write request. Hyper Replication logs the request. Only the address information is recorded in the log, and the data content is not recorded.
(2) Hyper Replication waits for the write processing results of the primary LUN and the secondary LUN to return. If all writes are successful, clear the log; otherwise, keep the log and enter the abnormal disconnection state, and then re-copy the data block corresponding to the log address when synchronization is started.
(3) Write the request to the primary LUN and secondary LUN. Normally, the LUN is in the write-back state, and data is written to the Cache.
(4) Return the processing result of the host write request, subject to the processing result of the write master LUN.
- A . （ 1 ）（ 3 ）（ 2 ）（ 4 ）
- B . （ 1 ）（ 2 ）（ 3 ）（ 4 ）
- C . （ 2 ）（ 1 ）（ 3 ）（ 4 ）
- D . （ 4 ）（ 2 ）（ 3 ）（ 1 ）
Which of the following about FC SAN network switching technology is wrong?
- A . A widely used technology that supports up to 127 devices.
- B . The switch can provide simultaneous communication between multiple nodes connected to it.
- C . A node failure in one zone will not affect node services in other zones.
- D . Switches use zone to manage network partitions and provide the best interconnection method.
What kind of technology does the OceanStor 5300 V3 expansion controller belong to?
- A . Scale-out
- B . Scale-up
- C . Scale-in
- D . Scale-deep
Which one of the following options is stored in a narrow-sense storage?
- A . Disk
- B . Disk array
- C . Disk cabinet
- D . Tape library
If a company uses an OLTP database, which migration strategy is suitable for the company’s Smart Tier?
- A . No migration
- B . Automatic migration
- C . Migrate to the high-performance tier
- D . Migrate to the low-performance tier
Statement 1: There is an interconnection line between the controllers of the storage system. If one of the controllers is broken, the working controller belonging to the LUN managed by it will be switched to a working controller.
Statement 2: The working controller and the owning controller of a LUN must be unified into one controller.
- A . Statement 1 is correct, Statement 2 is correct.
- B . Statement 1 is wrong, Statement 2 is correct.
- C . Statement 1 is wrong, Statement 2 is wrong.
- D . Statement 1 is correct, Statement 2 is wrong.
Database data belongs to structured data, and audio and video data belong to unstructured data. At present, the growth of storage space mainly comes from the rapid growth of unstructured data.
- A . True
- B . False
Regarding the NFS write mode in the Huawei OceanStor V3 storage system, which of the following is correct?
- A . Synchronous mode is to write the shared data to the cache, and then write it to the disk
- B . Asynchronous mode is to write shared data to the hard disk immediately
- C . The system defaults to asynchronous write mode
- D . The system defaults to synchronous write mode
Regarding the disaster recovery drills, which of the following statement is incorrect?
- A . Perform the drills in accordance with the real disaster recovery steps.
- B . Familiarize with the disaster recovery process through disaster recovery, and exercise business recovery capabilities when a disaster strikes
- C . Through disaster tolerance drills, business integrity cannot be checked
- D . Disaster recovery drills are verification and the most effective means to prove the availability of the system
The full name of RPO used in disaster recovery backup is:
- A . Return Purchase Order
- B . Recover Plan Objective
- C . Restore Point Objective
- D . Recovery Point Objective
Which of the following statement of Quota tree is correct?
- A . Quota tree is a first-level directory under the file system,
- B . Can only be created, deleted, and renamed by the administrator through the command line or GUI management interface, ordinary users can delete the empty Quota tree
- C . Quota tree can be renamed and deleted when shared by agreement
- D . Ordinary users can perform quota management on the number or capacity of files under Quota Tree
When deploying random small IO-based database services on storage, which RAID type should be more appropriate? Why?
- A . RAID 10, no write penalty
- B . RAID 5, no write penalty
- C . RAID 10, no read penalty
- D . RAID 5, no read penalty
CKG is composed of multiple CKs on different types of different hard disks in the hard disk domain.
- A . True
- B . False