HCIE-Storage H13-629_V2.5 Exam Practice Questions

1. An engineer logs in to the storage device as an administrator, and can view all user information of the current management device.

2. The virtualization platform migration solution is easy to operate and has no interruption in migration, and is suitable for scenarios such as VDI, virtual machine, and database cross-platform migration.

3. Which of the following statement about the storage system tuning process is incorrect?

4. Which of the following scenarios does not belong to storage data migration?

5. After the failure, the customer's application data needs to be collected.

6. Businesses need to back up SQL server databases and operating system applications. Service data is mainly generated from 9:00 to 18:00. The backup system must be highly stable and reliable. In this case, storage engineers can perform backup operations during off-peak hours, for example, from 23:00 to 06:00.

7. Customer A purchased Huawei Data Protection Appliances (DPAs) and used an advanced backup solution to back up the data of the database system, file system and operating system. Customers need to install and restore data within minutes. In this case, the backup copy can be installed on the production system in real-time, enabling service restoration within minutes.

8. The enterprise's storage engineers are designing an enterprise data backup solution that requires full backups every Sunday, incremental backups every day from Monday to Saturday, and a 4-week data storage period for full backups and incremental backups. Assume the initial data volume is 400 GB in daily increments of 20 GB. Well, 5480 GB is the amount of backend storage data after four weeks.

9. Before applying smartmigration to a LUN, the correct procedure is to reserve 50% of the LUN capacity in the storage pool where the LUN belongs to the storage function for storing metadata.

10. Enterprise A uses the advanced backup solution of Huawei Backup Appliance DPAs to back up database system data.

The enterprise system is as follows: Capacity is 4TB: Incremental backups are performed once a day: Data changes are 10GB per day: Data needs to be retained for one month. In this case, 6.5TB is the minimum size for the volume that fits into the backend storage.

11. Archiving will expand the capacity of storage systems in the data center. When planning capacity, engineers only need to consider data capacity, file system, RAID level, hot spare space, vault disks, and value-added features.

12. The effective capacity of the storage device is less than the actual disk capacity. Discrepancies may be caused by hot spare space, coffer disks, RAID parity data or metadata.

13. The active architecture of Huawei's mass storage system ensures load balancing of high-concurrency transaction services. With this architecture, I/OS is evenly distributed to all frontends for access to load balancing.

14. A company plans to use remote replication for data protection between site A and site B. 32 GB production, data needs to be replicated from site A to site B within 2 hours, and the bandwidth usage is about 80%. For bandwidth between two sites (without considering duplication and compression), 15 Mbit/s is the best choice.

15. Huawei's hyper-converged storage adopts the distributed hash table DHT algorithm, which combines parallel hash calculation with metadata in global memory.

16. Huawei mass storage hybrid flash memory can support NFS and ClFS.

17. Divide a LUN by 9000, map it to the operating system and mount a dedicated file system, and use the test tool to write a large number of 13K files. In order to improve the IO performance, it is recommended to set the read size to 16K.

18. Data protection methods (such as snapshots or backups) can recover files damaged by viruses.

19. A data analysis company plans to migrate data analysis services to HUAWEI CLOUD. Compared with self-built analysis platforms, migrating data to HUAWEI CLOUD can reduce investment in O&M personnel.

20. A bank uses Huawei's OceanStor system to provide its mission-critical services. RAID2.0+ and multiple copies provide local physical data redundancy to ensure data reliability for the bank.

21. An enterprise plans to build a 3DC architecture on HUAWEI CLOUD. Customers need cross-region DR to avoid service interruption and 0 RPO. Technicians provide cloud-based 3DC solutions, including Storage Disaster Recovery Services (SDRS) and Cloud Backup and Recovery (CBR). Production center X and DR center Y are constructed in Zone A 1 and AZ2, and remote DR center Z is constructed in Zone B. DR requirements of zero RPO and zero RTO can be met between data centers X and Z.

22. The disk domain of Huawei Ocean Storage's hybrid flash memory system contains 96 disks. In order to fully utilize the disk performance, it is recommended that the number of LUNs planned in a disk domain should not be less than 4.

23. When performing heterogeneous takeover before migration based on smart virtualization and smart migration, operators need to create eDevLUNs for LUNs from heterogeneous storage systems.

24. Under the same migration environment, if the data volume of the two file systems is the same (both 100GB), the migration rate is the same, which has nothing to do with the directory structure and file size distribution.

25. When creating an eDevLUN, when the write-back policy is set, the performance is good, but the reliability is low; when the write-through policy is set, the reliability is high, but the performance is affected.

26. A company implements continuous data protection for the file system of important applications. When the snapshot of the file system needs to be rolled back, the application sharing mount of the source file system must be canceled.

27. HyperCDP can generate more and denser recovery points for data on storage devices. HyperCDP copy is a full copy backup of source data at a certain point in time.

28. When the source storage is Huawei storage, the isomorphic online migration solution is supported. In this scenario, you do not need to query the Huawei compatibility list.

29. OceanStor V5 Scale-Out is a vertical expansion architecture, that is, it uses the existing storage system to continuously increase the number of disk enclosures to meet the increasing data demand of users.

30. Huawei's hyper-converged storage has the function of parallel and fast data reconstruction. Data shards are spread in the resource pool. After a hard disk failure, it can be automatically reconstructed in parallel in the entire resource pool. Only the actual data is reconstructed, and there is no need for a separate hot spare disk.

31. Storage planning, heterogeneous virtualization services take over, eDevLUN supports read caching.

32. Since the first three nodes of Huawei OceanStor 9000 form an ISM cluster, when connecting the equipment, the first three storage nodes NICO need to be connected to the management switch.

33. An enterprise purchased a set of Huawei OceanStor 9000 storage. Some basic software of the enterprise is stored in a directory, and all personnel are required to access the share. For the convenience of operation, it is not necessary to enter the account password when accessing. Engineers can do this when configuring, set the basic software directory as an NFS share, and check the "guest enable" option under the share.

34. During the homogeneous migration process, after the host multipath completes the link aggregation of the original LUN and eDevlun, the migration task can be created and the migration can be started.

35. In the IO processing of distributed object service, after authentication, OSC uses Plog Server to perform EC calculation on data, and writes concurrently to Plog Client for persistence.

36. In the SmartVirtualzation feature, eDevlun corresponds to external lun one by one, eDevlun is the external lun.

37. Small impact on host business

4, the backup performance is good.

Regardless of cost, which of the following backup networking architectures can meet customer requirements?

38. Which of the following binding modes is recommended for the storage network configuration when using the stand-alone mode, ticket data protection all-in-one machine?

39. Which of the following does not belong to the scope of operation and maintenance technical support?

40. Which of the following is the upgrade method for the controller to be upgraded in batches and reset to take effect? ​​

41. For a file system with the HyperLock feature enabled, we cannot delete, modify, and rename the files in which state the system is in?

42. Huawei's all-flash storage, Kunpeng 92 core supports eight-core technology, and can allocate 12-core load services for front-end interface services, global cache services, back-end interface services, storage pool services, and various services. Which of the following data technologies belongs to?

43. Which of the following scenarios does NFS not support?

44. In the mixed flash, which of the following statements about the two features of smarttier and smartcache are correct?

45. After the storage project implements transshipment maintenance, which item is not part of the standard process management link?

46. The various businesses of the enterprise have different storage requirements and need to be finely divided. The customer hopes that different businesses can compete for physical space and achieve optimal configuration of space. Which of the following features can meet the requirements?

47. Under the all-flash storage FC networking, which one is wrong?

48. . The iSCSI protocol is a SCSI instruction set that runs on the upper layer of the IP protocol. For a TCP packet encapsulating the iSCSI protocol, which of the following parts does not contain?

49. During hybrid all-flash data migration, SmartMigration selects the medium speed for the migration rate, and what is the maximum rate?

50. The backup service cannot occupy the storage network bandwidth of the production environment. Which network should I choose?

51. Establish a remote disaster recovery center, the distance is 1000KM, the business data increment is 2G per day, the synchronization is up to 8 hours, the bandwidth utilization rate is 70%, and what is the minimum bandwidth that meets the demand?

52. Which of the following networking supports shared interface modules in Dorado high-end storage products?

53. Due to the approaching of the National Day, equipment maintenance needs to be powered off and then powered on. What is the correct sequence of power-on?

54. A customer project deploys an 8-node Huawei OceanStor 9000 C Node. The front-end and back-end are all IB networking. The device has been powered on and the interoperability test of all device front-end network ports and customer front-end service switches has been completed. Next, engineers will install and deploy Huawei OceanStor 900 software, the following are some of the operation methods of engineers in the field deployment process, which one is in line with the operation specification?

55. Huawei's hyper-converged storage adopts a distributed storage logic architecture. Which of the following is the function of the VBS module?

56. Company A plans to adopt hyperconvergence to meet the rapidly changing information needs of the enterprise. Which of the following is an architectural feature of hyperconvergence?

57. Huawei OceanStor 9000 nodes, read and write performance from high to low, which of the following is the correct order?

58. Windows supports MBR and GPT two disk partition modes. For MBR disks, which the following is correct?

59. Regarding the FRU replacement tool, which of the following statement is wrong?

60. Due to the increasing number of cloud users, a security enterprise needs to expand a new data center to respond to storage needs, and plans to purchase flash memory storage devices to support image data storage. The site plans to support 300 video signals, each with a flow rate of 1.5Mbps, and requires that each video signal be reserved for at least one month.

known:

1) The nominal capacity of a single hard disk is 931GB, and two coffer disks are configured, each with a size of 480GB, and the coffer disk is not a member disk of a RAID group;

2) The server uses Windows operating system, and the file system uses NTFS, the space occupancy rate is about 0.01%

3) Due to the influence of large data write traffic and large storage space, the basic cost and data security are considered, the RAID strategy will adopt RAID5, the plan is to configure 80+1P, and use the default hot standby strategy (equivalent to creating one hot spare for each RAID group).

What is the approximate total capacity required for this site?

61. Which of the following statements about the Huawei OceanStor 18000 Smart Matrix architecture is incorrect?

62. Which of the following operations are not part of the homogeneous migration scheme?

63. The backup back-end capacity is determined by the initial capacity and data increment.

64. The international standard SHARE 78 divides the disaster recovery system into 7 levels. Which of the following technologies can be used for the sixth level of data protection?

65. Which of the following schemes is usually used for file system level migration?

66. The types of production data of an enterprise include file systems, volumes, operating systems, databases, virtual machines, etc.

Data will be backed up using the standard backup method of the data protection appliance. Which of the following descriptions is correct?

67. A customer has 1100GB of data, of which the backup window is 3 hours, and the GE network, to meet the needs of the customer, can only choose the LAN Free networking method.

68. For Homedir migration in NAS migration scenario, which of the following description is wrong?

69. In the heterogeneous virtualization feature of Huawei OceanStor hybrid flash storage, which of the following is not included in the camouflage information involved in basic camouflage?

70. During the process of the engineer replace the storage array controller, which of the following description is wrong?

71. When a customer inspected Huawei OceanStor hybrid flash storage, he found that controller B was on red, and the system status indicator was red. Which of the following is the correct way for engineers to handle this failure?

72. Create a user UserO1 in the user group GroupO1, and the quota of the user UserO1 in the directory /home/groupOl is as follows:

Recommended threshold: 8GB,

Software threshold: 18GB,

Grace period: 15 days,

Hard threshold: 25GB.

What is the effective quota for the user UserOl in the directory /home/g rou p01?

73. OceanStor 9000 is a single file system. Snapshots can use all the space of the whole system. There is no restriction on the use of snapshot space. Users cannot set the usage threshold of snapshot space. A. TRUE

B. FALSE

74. Regarding Huawei distributed storage, which of the following statement is wrong?

75. The virtualization data in the storage pool consists of two parts: the metadata volume and the data volume. Which of the following is not included in the metadata volume?

76. After the hardware display block fails, which of the following devices cannot be replaced when powered on?

77. Which of the following features can make a LUN generate two physical copies at the same time?

78. Which of the following descriptions about Huawei Hybrid Flash Storage SmartQos features is incorrect?

79. In order to improve the business performance of storage devices, which of the following front-end networking solutions should be recommended?

80. The hot-spare policy in Huawei Oceanstor hybrid flash storage is set to high, and all 1TB hard disks are used. When there are 8 hard disks, 80 hard disks, 180 hard disks, and 280 hard disks in the hard disk domain, how much hot-spare space will the system allocate respectively?

81. In the process of data migration based on the heterogeneous virtualization function, if there are insufficient storage ports, consider sharing ports with the "active-active" and "remote replication" services when the local storage system and the heterogeneous storage system are networked.

82. In large and medium-sized database applications, files such as data, logs, and modification records are stored in different LUNs associated with the storage system. The data association in these LUNs is also required when the master is replicated to the slave by the upper-layer service of the host. Ensure the correlation of these LUN data, otherwise the disaster recovery data on the slave end cannot be used to restore services. In this case the remote replication pair of these LUNs can be added to the same consistency group.

83. A user deploys a backup system for the database business, the production volume capacity is 2TB, and the incremental data change is 20GB/day, which is retained for 1 month, and routine mount tests are performed quarterly.

When doing back-end capacity planning, if using advanced backup, which of the following options is close to the back-end capacity requirements?

84. A company has database applications, OLTP applications, mail service applications, web server applications and other services, and of which of the following business scenarios does the SmartCache feature not significantly improve the performance?

85. Which of the following statements about metadata is correct?

86. When the storage system generates a fault alarm, it is the best way to use the replacement method.

87. Which level of data replication is the asynchronous remote replication of the HyperReplication file system based on?

88. In the performance tuning process of the storage layer, which of the following links includes tuning operation preparation and tuning configuration?

89. The company plans to migrate business systems to HUAWEI CLOUD, and has purchased several cloud servers in Availability Zone 1 and Availability Zone 2 of Region A. Availability Zone 1 is used for production sites and Availability Zone 2 is used for disaster recovery sites. Requirements The RPO of disaster recovery is 0, and the RTO is less than 30 minutes. The enterprise has purchased the Storage Disaster Recovery Service. Which of the following description of the enterprise's cloud disaster recovery construction is wrong?

90. Which of the following statements about RTO recovery time objectives is correct?

91. The client has sufficient resources to prepare the price, and the production network resources are relatively tight. It is planned that the amount of data to be fully prepared once a week is between 1-2T, the backup window is 3 hours, and the source deduplication is used, and the deduplication ratio is 3, the bandwidth utilization is 0.8. Which of the following networking can meet the backup service requirements with the least investment?

92. In the backup scenario of the Huawei data backup all-in-one machine, the deduplication types can be classified according to the granularity. Which of the following granularity of deduplication is used for online deduplication?

93. In the active-active solution, it is supported to deploy two arbiter servers at the arbiter site to form an active-standby relationship (cold standby). If all the links between the primary arbiter server and the arrays at both ends are disconnected, and the connection between the secondary arbiter server and the arrays at both ends is normal, and the links between the active-active sites are also normal, which of the following statements is correct?

94. When the alarm information can be collected normally, the alarm analysis method is suitable for locating any fault.

95. Which of the following descriptions about the networking of Huawei all-flash storage devices is incorrect?

96. Huawei's OceanStor hybrid flash storage system can not only provide high-performance storage services for application servers, but also support various advanced data preparation and disaster recovery technologies to ensure profitable and safe operation of data services.

97. Huawei's all-flash storage system software adopts the Symmetric Active-Active architecture. Which of the following description is incorrect?

98. In a customer application scenario, the I/O business model is random read, the RAID level is RAID5 (8D+1P), and the I/O size is about 100K. What is the appropriate LIN stripe depth for the storage array?

99. In the OLTP business scenario, Huawei OceanStor hybrid flash storage uses SmartTier technology to create storage pools. Which of the following settings can improve the accuracy of tiered storage hotspot identification?

100. A company purchases 2 sets of Huawei all-flash storage devices for deploying database services, which are respectively deployed in data center A and data center B in city M. And complete the active-active disaster recovery configuration.

Which of the following failures will cause business interruption?

101. The customer needs to create a new OLAP backup database for batch importing online database data at night. The database software is SQL Server 2008, the data file capacity is 20TB, the storage array is OceanStor V3, and the stable write bandwidth is required to reach 180OMB/S, which of the following configuration best meets the customer's requirements?

102. When doing the main and standby disaster recovery design, which of the following description of the slave side is correct?

103. In Huawei's active-standby disaster recovery solution, Oracle RAC clusters are deployed at the production site to ensure that the disaster recovery database application can still provide services normally when the production end fails. Which of the following statement is correct?

104. There is a specification limit on the number of consistent splits for the target Huawei storage SmartMigration. When the number of LUNs of an application exceeds the specification, the host service needs to be stopped once to complete the entire split.

105. The Persistence layer of Huawei's distributed storage provides persistent storage capabilities, EC and multi-copy capabilities, and provides Plog append only access capabilities through PlogClient.

106. Which of the following types of LUNs can the SmartErase feature be applied to?

107. Which of the following is not part of the storage fault handling process steps?

108. When creating a LUN on Huawei Oceanstor hybrid flash storage, set the initial allocation policy to "Automatically allocate" after creating LUN1, confirm that 80% of the space of LUN1 is in the capacity tier.

When LUN2 continues to be created in the same storage pool, the ratio of its space in the performance tier must be 0%.

109. The Huawei Oceanstor Dorado high-end system is expanded through a 2-port 100G RDMA shared module. Which of the following is the maximum number of controllers that can be expanded?

110. In Huawei's all-flash storage system, in order to reduce the probability of data hotspots on SSD disks, the method (ROW large block sequential write) is used for all writes. Each write request is written by allocating new Flash particles to realize Flash particles. Erase and write times are balanced.

111. The smartThin feature does not allocate all the space in advance. The storage space that the user sees will be larger than the actual allocated space, and the user implements the principle of on-demand allocation for this part of the space.

112. Due to technological changes, dynamic scaling and frequent changes of storage services, etc., higher capability requirements are brought to operation and maintenance.

113. The write protection has been cancelled from the directory

B. Set the channel authentication IP address, which is the static front-end service 1 address of any node in the remote cluster. Use stem to establish replication zone channel connections. The node must be within the replication zone.

C. If the replication link is disconnected, the Pair attribute can only be modified in the cluster where the home directory of production site A is located. When the replication link is restored, the modified pair properties are automatically updated to the production site slave directory.

D. The channel authentication password can be modified. After the password is modified, if the replication link is disconnected, you need to manually re-enter the new password again, and keep the passwords of the channel initiator and receiver in the replication area consistent before the replication link can be restored.

114. Huawei distributed storage can provide both S3 and Swift services.

115. Huawei's hyper-converged storage products have strong consistent replication protocols. When an application writes a piece of data, if it succeeds, one or more copies of the backend must be consistent.

116. Huawei OceanStor full-flash storage system supports IP drift to ensure business continuity and reliability. Which of the following statement about IP drift is incorrect?

117. An archive will expand its data center storage system. In the process of capacity planning by engineers, in addition to data capacity, file system, RATD level, hot spare space, coffer disk, value-added features, etc., it is also necessary to consider capacity variances between hard drive manufacturers and operating systems.

118. RAID2.0 has the natural advantage of supporting SmartTier, which can accelerate the performance of hot data. Which of the following statements about SmartTier's performance is true?

119. Log in to the Huawei OceanStor hybrid flash storage CL window and run the following command: Admin: />create lun name=asdf pool id=0 capacity=2GB lu_type=thin initial_capacity-1GB dedup_enabled=yes After the configuration is complete, the deduplication data granularity is 64KB.

It is recommended to modify it as follows: Log in to the CLl window of the Huawei OceanStor full-flash storage system and run the following command: Admin:/>create lun_workload_type general name=test1 io size=64KB dedup_enabled=yes compression_enabled=yes After the configuration is complete, the data deduplication granularity is 64KB.

120. A company purchased a set of Huawei hybrid flash storage to run the virtualization platform business. Huawei multipathing software is used on the host system and is connected to the two controllers of the storage through an Ethernet switch. The storage engineer found that services on the host side were interrupted and delayed. After inspection, it was found that the active links of the multi-path kept switching. In the case of ensuring business reliability, which of the following operations can solve this problem?

121. NTFS (New Technology File System) is the file system of WindowsNT environment.

Which of the following statements about the NTFS file system is incorrect?

122. Which of the following application scenarios does the Huawei OceanStor hybrid flash storage deduplication feature apply to?

123. In the outline design stage, it is necessary to output HLD (High Level 1 Design).

124. In the homogeneous online migration scheme, the heterogeneous link between the target storage and the source storage only supports FC connection.

125. The customer's business is very important and has a large amount of data. It needs the best possible business continuity. At the same time, it is required to provide services to the outside world in the event of a natural disaster (flood/earthquake). Please design a disaster recovery network. Which network will you choose?

126. A company purchased two sets of Huawei full-flash storage devices and deployed them in two data centers in the same city. When configuring active-active storage, you can configure the arbiter server mode and static priority mode at the same time.

127. The asynchronous remote replication of Huawei OceanStor storage system adopts multi-time slice caching technology, which can make the RPO index of LUN asynchronous remote replication reach the second level.

128. A company creates periodic snapshots of the file system of its instant chat service. When the storage system generates a new snapshot each time, it will automatically delete the oldest snapshot.

129. In the active-active disaster recovery solution architecture, two FC switches will use the same Domain ID after cascading, so as to divide the zone.

130. Huawei's scale-out file storage adopts an asymmetric distributed architecture to provide users with unstructured data sharing resource storage. It is a scale-out file storage system for massive structured data storage applications.

131. The online upgrade method is a highly reliable and highly available upgrade method carried out under the condition that the business is not interrupted, and is used for the occasion where the business cannot be interrupted by the upgrade. Since online upgrades are performed in batches, the impact on business performance is small.

132. In a company's data center, Huawei's multi-path software is installed on the host system to connect storage devices through multi-links. A LUN stored on the device is mapped to multiple hosts at the same time, but some hosts cannot access the LUN. The storage project does not enable the multi-path software load balancing function and selects the FIFO (First Input First Output) method to solve the problem.

133. The creation of logical ports is based on physical Ethernet ports, bound ports or VLANs, and is mainly used for business operation. At the same time, you need to specify the main port, when the main port fails. Services will be taken over by the failover port.

134. A bank's production center and disaster recovery center use Huawei's hyper-converged storage. It is recommended that the replication link between sites be within 3000KM, the minimum connection bandwidth should not be less than 10Mbps in both directions, and the average write bandwidth of the replicated volume is smaller than the remote replication bandwidth.

135. A company's data center deploys a set of Huawei hybrid flash storage, and the storage engineer uses the trust feature to protect the LUN data. The storage engineer's misoperation leads to the loss of all storage LUN data. You can use snapshots to restore production data.

136. For Huawei's intelligent distributed storage products, clusters can only provide block storage and object file storage interfaces for upper-layer applications.

137. Storage engineer A often receives feedback from users that the read and write speed of business applications running on the storage is slow, and there is a phenomenon of lag. Engineer A logs in to the storage to check and finds that there is no front-end service port alarm, and replies to the user that the storage performance is normal.

138. A bank deploys two sets of Huawei all-flash storage. Storage A is deployed in the production center, and storage B is deployed in the disaster recovery center. The planning information is as follows:

(1) The business data, logs and modification information of the transaction system database are stored in LUNO1, LUNO2 and LUNO3 of storage A respectively;

(2) When storage A and storage B establish a remote replication relationship, add the remote replication pair of LUNO1, LUNO2, and LUNO3 to the consistency group.

During the process OF data synchronization, the remote replication task of LUNO2 fails.

The consistency group will immediately stop the remote replication tasks for LUNO1 and LUNO3.

139. An enterprise plans to build three centers in two places on the cloud on HUAWEI CLOUD. The customer requires cross-regional disaster recovery to avoid business interruption. Due to the particularity of the business, the customer requires disaster recovery RPO=0. The technicians provided the customer with SDRS (Storage Disaster Recovery Service) + CBR (Cloud Backup and Recovery) solution of three centers on the cloud, two locations and three centers. The production center × and disaster recovery center Y were built in Availability Zones 1 and 2 of region A, and the construction of region B. The remote disaster recovery center Z, X, and Z data centers can meet the customer's RPO=O disaster recovery requirements. 1. When all BBUs of the storage controller are damaged, the controller will automatically set the I/O write policy to write-through and lock to ensure data reliability. It cannot be forced to write-back before the fault is recovered.

140. When all BBUs of the storage controller are damaged, the controller automatically sets the I/O write policy to write-through and locks to ensure data reliability, and cannot be forced to write-back before the fault is recovered.

141. During the configuration process of HyperMetro's HyperMetro domain, when adding a HyperMetro pair, only when the "Pair Running Status" of the optional HyperMetro Pair is "Normal" can be added to the "Selected HyperMetro Pair", and continue to the following configuration operation.

142. Huawei distributed storage block storage iSCSI protocol can only be used in VMware scenarios.

143. A customer used Huawei hybrid flash storage to build a primary and backup disaster recovery system, and the production center and remote disaster recovery center adopted asynchronous remote replication technology. The business data, logs and other data in the customer database application are stored in different LUNs, and the remote replication pairs of all LUNs are added to the same consistency group. When the consistency group is synchronized, split or switched between master and slave. At the same time, the remote replication pair of all LUNs in the group also performs synchronization, splitting, or master-slave switchover operations.

144. The WORM feature adds WORM attributes to the common file system, so that files in the file system can only be read, but not written.

145. A company purchased two sets of Huawei all-flash storage, deployed in data center A and data center B respectively, and configured active-active for them. When data center B fails, DCL (Data change lg) can record data changes in data center A. After the failure is recovered, the changed data is synchronized to the storage device in data center B.

146. In order to ensure data security and business continuity, M Enterprise has built a set of primary and backup disaster recovery system. The construction information of the disaster recovery system is as follows:

(1) The production center and the disaster recovery center use asynchronous remote replication;

(2) The business data synchronization time is about 8 hours a day;

(3) The daily data increment is about 1500MB;

(4) The replication cycle is every 4 hours.

Based on the above background assessment, the company's IT technicians can meet the requirements if the disaster recovery network bandwidth is greater than 0.5 Mbps.

147. A company has a set of business systems that it plans to deploy to Huawei's public cloud. Engineer A suggested that two cloud hosts can be deployed in the same area to deploy HA clusters and share EVS cloud hard disks. When one cloud host fails, it can automatically switch to another cloud host to ensure business reliability.

148. Huawei's all-flash storage supports the DTOE protocol offload technology, which enables IO to be sent directly from the network card to the User Space for processing without going through the Kernel Space.

149. Both the production center and the disaster recovery center of a bank use Huawei's hyper-converged storage products, and the two centers perform disaster recovery through asynchronous replication. The replicated network type can support GE/10GE/25GE.

150. A certain storage project needs to achieve 50,000 ICOPS performance. It is planned to enable the Smartier feature and configure three tiers. According to the disk calculation configured for each tier, the high-performance tier can reach a maximum of 30,000 ICOPS, and the performance tier can reach 20,000 ICOPS, the capacity layer can reach 10,000 ICOPS, then this configuration can definitely meet the 50,000 ICOPS requirements of this project.

151. Use the OceanStor V3 file system quota feature to set soft quotas and hard quotas. In each I/O write operation, it will first check whether the space capacity and number of files consumed by this operation will exceed the soft quota.

152. A Customer needs to back up data on HUAWEI CLOUD. HUAWEI CLOUD provides server backup and cloud hard disk backup. Among them, cloud hard disk backup can back up the system disk and restore it to a cloud host through the system disk.

153. After the cache mirroring function between the two controllers of the Huawei OceanStor all-flash storage array is enabled, the data in the cache between the two controllers is exactly the same, and the failure of a single controller will not affect the availability of data.

154. Huawei's hybrid flash storage uses intelligent classification technology, which needs to be deployed on devices with different media types. Data that has not been accessed for a long time will be marked as cold data, and gradually transferred from slow media to high-performance media.

155. The storage device of a company's production center is Huawei hybrid flash storage. Business data is backed up to the tape library through backup software, and the backup data is uploaded to the data center of the company headquarters every morning. Engineer A believes that the data backup from Huawei storage to the tape library is a disaster recovery, and the data recovery of the branch office through the data recovery of the company headquarters is a backup.

156. Huawei's hybrid flash storage adopts the RAID2.0+ software architecture, which realizes the virtualization of the underlying media and the virtualization of upper-level resources, and solves the problem of rapid data reconstruction and intelligent resource allocation.

157. Huawei's hybrid flash storage supports the integration of NAS and SAN. The software protocol stacks of the two are completely parallel, and they are integrated in the resource allocation and management planes.

158. Which of the following description about the WORM feature is incorrect?

159. The maintenance personnel found that the storage fault indicator was on, and after logging in to the management interface, they found that the RALD group degraded alarm, and directly located the fault of a certain hard disk. Troubleshoot by replacing the hard drive. During this process, which of the following basic troubleshooting methods did the maintainer use?

160. Which of the following drift groups does Huawei all-flash storage system automatically add all Ethernet ports and bonded ports in the cluster to?

161. F Use ERP system, OA system, Windows and Linux operating system in enterprise production environment. Among them, the total amount of ERP system data is not large, but the daily data update volume is relatively large and the data update volume is not large. But the total amount of data is not very large. The total amount of OA system data is relatively large, but the operating system and application software are updated irregularly every day. For this enterprise backup strategy choice, which of the following is wrong?

162. A customer plans to build a disaster recovery center that can take over the production business after the production center fails. The customer's business attributes can tolerate a 2-hour business suspension. The disaster recovery center is 50KM away from the production center. The customer requires the production center and the disaster recovery center to adopt the 1 mode, which can provide convenient disaster recovery management at the same time.

Which of the following description of the construction needs of the customer's disaster recovery center is false?

163. Which of the following descriptions will not cause value-added service failures?

164. A company plans to perform performance tuning on a set of Huawei hybrid flash storage that uses a decision support system. The storage engineer obtained some information after testing:

1) The size of a single IO is 64 KB-1MB;

2) The proportion of sequential read IO is 90%;

3) The average utilization rate of front-end bandwidth is 90%;

4) The host application is a database.

Based on the above information, which of the following performance tuning measures does not meet the requirements of this scenario?

165. A company plans to perform data protection through remote replication between data centers A and B. Currently, there is 32GB of production data at site A, and it needs to be copied to site B within 2 hours. The bandwidth utilization rate is about 80%. Please calculate, how much bandwidth needs to be achieved between A and B to meet business needs (without considering deduplication and compression)?

166. A company backs up database system data and uses the advanced backup function of Huawei's data protection all-in-one machine. The company's production volume capacity is 4TB, incremental backups are performed every day, and the data change amount is 10GB per day. What is the capacity of volumes need to mount at least?

167. There are 96 disks in a disk domain of Huawei OceanStor hybrid flash storage system. In order to fully utilize the performance of the hard disks, it is recommended that the total number of LUNs in the disk domain should not be less than ___.

168. F customer plans to purchase Huawei data protection all-in-one machine for data protection of the production system. The current business status of the customer is as follows: the peak time of the system business is from 9:00 to 18:00 on weekdays, and the customer requires the backup time to be minimized. The business data is massive small file, but the total capacity is large.

Based on this scenario, when using the Huawei Data Integrated Protector to formulate a backup strategy, which of the following statements is false?

169. Huawei Scale-Out File Storage is a scale-out file storage system for massive unstructured data storage applications. Which of the following is not a feature of this product?

170. Which of the following features does the Thin Lun of Huawei OceanStor hybrid flash storage not support?

171. A company buys a set of Huawei hybrid flash storage, and the host is connected to the storage through a fiber switch. When planning the fiber switch configuration, which of the following options is the optimal configuration?

172. A company plans to deploy a disaster recovery system, which requires that when a data center-level failure occurs, the business will not be interrupted and business data will not be lost; it plans to use two places and three centers to interconnect, which of the following solutions can meet the requirements?

173. Engineer A discovers that the storage is abnormal during routine inspections, and calls the Huawei technical support hotline for help. The technical support guides Engineer A to complete the collection of service host information.

The operating system of the business host is Linux, which of the following collected commands is wrong?

174. An enterprise plans to purchase a set of storage equipment. According to the IOPS requirements of the enterprise business, the IOPS that a single hard disk of storage needs to support is 3000. Considering the cost factor, it is recommended to use which of the following hard disks best meets the requirements of the enterprise?

175. M customer plans to use eReplication to build disaster recovery scenarios. Which of the following statements about eReplication disaster recovery business configuration is wrong?

176. Which of the following descriptions about the characteristics of the DME architecture is wrong?

177. Traditional storage controllers are centralized and can create performance bottlenecks. In Huawei's hyper-converged FunionCube, the distributed architecture and distributed storage make storage performance bottlenecks disappear.

178. Regarding the multi-NameNode features of Huawei's distributed storage products, which of the following statements is correct?

179. The NDMP backup feature of Huawei OceanStor 9000 storage device only supports NDMP protocol V4.

180. In OceanStor 9000, when using the InfoTier feature to migrate source files, the snapshot data of the source files will not be migrated between different storage levels along with the source files.

181. HDD and SSD hard disks show huge performance differences under different IO patterns. The Append Only Plog technology in Huawei's distributed storage can provide the best download performance model for different hard disk types.

182. Huawei's hyper-converged storage adopts a distributed storage logic architecture. Which of the following is the function of the MDC module?

183. Which of the following products cannot Huawei distributed storage block storage be integrated with?

184. Mean Time Between Failures (MTBF), which describes the average continuous failure-free time of a product during operational use or testing.

185. In the OceanStor 9000 storage system, when InfoReplicator features master-slave switching, it supports automatic switching of quotas, sharing permissions, stripe size, directory redundancy ratio and other information.

186. In the Huawei OceanStor 9000 version, in order to experiment with the unified management of the video surveillance functions of multiple Huawei OceanStor 9000 products, the UniformView software needs to be installed. Which of the following description is wrong?

187. The requirements of a banking business operation background storage system are as follows:

(1) The size of the business image file generated by the business operation system is basically about 100KB.

(2) The business operation system is all GE networking, the server and operating terminal are all GE interfaces, and subsequent upgrades to 10GE are considered according to business needs.

(3) Only 72TB of raw space is required, and the later expansion will give priority to the expansion of the disk.

(4) There is only 20U of cabinet space in the computer room for storing the storage equipment in this phase. It is preferred to configure 3 nodes + supporting switches to meet the planning of the computer room cabinet.

Based on the above requirements, the following more suitable networking solutions are:

188. When the OceanStor 9000 storage system is deployed, the node cannot be discovered or is displayed in red. The possible reasons are?

189. In the cluster multi-path networking configuration, which of the following are misconfigured?

190. Which of the following is not a function used by Huawei in the migration?

191. In general, which of the following migration scenarios is the fastest?

192. The fault recovery of Huawei's active and standby disaster recovery solution means that when the production site fails, the production business is automatically switched to the disaster recovery site for operation.

193. An enterprise has applications such as key performance applications, mainstream commercial applications, archiving and printing services, and each application is independent. In order to ensure business priority, SmartMulti-Tenant technology can be used to create tenants for different businesses, and according to tenant levels and business characteristics, set the storage resources of each tenant's vStore.

194. For incremental migration under CIFS sharing, it is necessary to add parameters to Migrationdirector for NAS to ensure that the corresponding files on the target end will be deleted synchronously after the source end file is deleted. The parameter is?

195. 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 once a week, and a differential backup every day from Tuesday to Sunday. The storage period of the full backup and additional backup data is 4 weeks, without considering deduplication/redundancy ratio/replication, etc., please calculate that the required backend capacity should be no less than?

196. Before the cloned file system of Huawei OceanStor hybrid flash storage is split, when the data of the parent file system is physically damaged, the data of the parent file system can be recovered.

197. A manufacturer's distributed storage system was put into operation for 100 days, running 24 hours a day. A failure occurs on the morning of the 10th day. Recovery took 1 hour. A failure occurred on the morning of the 25th day, and the failure recovery took 4 hours. A failure occurred in the morning of the 80th day, and the failure recovery took 1 hour. The availability of the software system is?

198. In the OceanStor 9000 system, when a service hard disk fails, which data recovery method will the system start?

199. In the OceanStor 9000 system, although a floating IP is configured on a node, when a node is powered off abnormally, its floating IP needs to be manually migrated to other nodes.

200. In the Huawei OceanStor hybrid flash storage array, two snapshots are taken for a LUN with a capacity of 100GB. The source LUN and the snapshot LUN occupy a maximum capacity of 200GB.

201. When deploying Huawei distributed storage, you can differentiate the service types (block, file, big data and object) provided by the cluster by importing licenses for different services.

202. If the Oracle business in the HyperMetro solution has multiple data LUNs and multiple log LUNs, it is recommended to add the active-active pair constructed from the data LUN to one consistency group and add the active-active pair constructed from the log LUN to another consistency group, to ensure data consistency.

203. A customer plans to migrate 5TB of object storage data to HUAWEI CLOUD due to business needs. It is recommended to use the pre-migration evaluation function for resource evaluation, and then create object storage near-migration tasks in batches on the evaluation interface. The system will automatically divide it into multiple migration tasks based on the inventory and quantity distribution of objects in the bucket, improving migration efficiency and reducing migration time.

204. The heterogeneous virtualization feature is used for data migration. To ensure data security, the eDevLUN defaults to a write-through policy.

205. The peak write bandwidth of an application is 10MB/s, the average of write bandwidth is 200KB/s, and the average write T0 size is 4KB (the bandwidth utilization rate is 70%). If the OceanStor V3 storage array needs to be used for data disaster recovery and the asynchronous replication mode is set, the minimum network bandwidth required is ？

206. In an AD domain environment, if the ACL carried by the source CIFS shared directory contains AD domain user permissions, after using Migrationdirector for NAS to migrate data and permissions to the target storage in the same AD domain. SID conversion for domain users is no longer required.

207. When planning the backup capacity of storage, which factor does not need to be considered?

208. A multinational enterprise has a huge business, and customer business data is scattered in multiple locations, and the distance between the locations is greater than 1000km. The enterprise hopes to centrally manage the backup data of each site, so that users can analyze and mine all data without affecting the normal business. If any business site suffers a disaster, the enterprise can take over the business and perform data recovery. In this case, which disaster recovery backup solution should the enterprise choose?

209. Due to the rapid business development of a company, the current storage A can no longer meet the needs. The company decides to purchase a set of Huawei all-flash storage B to replace the existing storage A equipment. It is required that services are not interrupted during data migration from storage A to storage B. When configuring an eDevLUN for service takeover, the LUN masquerading option should not be masqueraded.

210. In the homogeneous online migration scenario, when the Huawei multi-path version is V1R8C50, and the multi-path cannot query the storage system of the source storage SN, which camouflage strategy should be used?

211. A company has a set of Huawei storage devices (such as Huawei OceanStor 2600T) in data center A, and recently purchased a new set of Huawei all-flash storage devices (such as Huawei OceanStor 5300Fv5) and deployed it in data center B. The active-active feature can be configured between two storages to ensure business continuity.

212. After an enterprise creates a scheduled HyperCDP plan for a period of time, it frequently prompts that the storage pool resources are insufficient. At this time, which of the following options can be selected to configure and modify the scheduled HyperCDP plan?

213. In the Huawei HyperMetro active-active data center solution, before configuring an active-active pair, you need to configure an active-active domain, and each active-active pair must be created in the active-active domain.

214. In the synchronous replication scenario, the peak write bandwidth of an application is 16MB/s, the average of write bandwidth is 500KB/s, the average write IO size is 8KB, the overhead of private information is about 11%, and the bandwidth utilization rate is 80%. The disaster network bandwidth should not be less than?

215. The customer environment is SuSE 10 SP3, the HBA is QLogic QLE2562, the HBA card driver that comes with the operating system is used, and the storage array is Huawei OceanStor V3 storage. When the FC host port on the storage system and the HBA card port on the host have different modes, it is usually recommended to modify the FC host port mode on the storage side to solve the problem.

216. A customer's Huawei OceanStor hybrid flash storage array has a damaged controller and needs to be replaced. Shortly after the on-site engineer replaced the controller, the alarm indicator of the newly inserted controller was found to be red and an audible alarm sounded. How should the on-site engineer handle this correctly?

217. Check the running performance of the storage system through DeviceManager, and you can learn the real-time and long-term status of the service performance of the storage system.

218. In Huawei OceanStor hybrid flash storage, data, logs, and modification information of a database application are stored in main LUDN1, main LUN2, and main LUN3, respectively, and asynchronous remote replication is created for the three main LUNs. When the primary LUIN2 fails, the primary storage system can be used to restore the data of the primary storage system, and the database can be started normally through the primary storage system.

219. Regarding the file deduplication and compression feature of Huawei OceanStor hybrid flash storage, which of the following statements is false?

220. M Company plans to build a remote 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 remote replication network bandwidth to meet the requirements?

221. A company plans to purchase a set of Huawei hybrid flash storage equipment to replace the old storage equipment. At present, the daily storage data is 5TB, and the new storage device needs to meet: the usage requirements in the next 5 years, the data growth volume is expected to be 50% every year, please calculate the data volume after 5 years. Without considering deduplication compression, what is the closest value that can meet the needs?

222. Regarding the protocol layer of Huawei's distributed storage products, which of the following statements is wrong?

223. Which is wrong about the description of database OLAP business load characteristics?

224. Which of the data stored in content warehouse websites such as YouTube and Facebook described is wrong?

225. Huawei all-flash storage devices need to be planned and designed before deployment. Which of the following does not require planning during storage networking?

226. A company's business host runs the Linux operating system (take CentOS as an example). The storage engineer needs to use the Linux system performance monitoring tool in the process of collecting performance data. Which of the following is wrong?