H13-629 : HCIE-Storage : Part 16
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In the scenario of database protection, when the slave uses the virtual snapshot to verify LUN data consistency on the production end and the DR end and the disaster recovery end LUN database can not be started normally. Which of the following are the possible reasons for this? (multiple choice)
- After a snapshot of the LUN of the redundancy site is created, the snapshot is not activated at the same time
- Disaster recovery data stored in the Cache, not yet written to the hard disk
- When creating a snapshot on the disaster recovery end LUN The production end is copying data to the disaster recovery end
- The production end and disaster recovery end adopt the disaster recovery solution of incremental LUN copy. The incremental data is abnormally interrupted during the synchronization process and has not been recovered
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Which documents must be read for an Oralce database normal start? (Multiple choice)
- Parameter file
- Control Documents
- archive log file
- Data files
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Which if the following is correct regarding the Huawei Oceanstor unified storage system multi-planar system design?
- The service plane uses GE channels for data transmission
- The service plane connects the host IO channel, disk IO channel and GE switch
- Plane redundancy between each other, when the business plane fails, allowing the use of control plane transmission of business data
- When the GE switching channel is faulty, the PCIe switching channel can be used as the backup data transmission channel
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Which of the following are correct regarding the Simpana backup software? (multiple choice)
- data Reader: The flow of raw data read from the client, set in each client
- Data streams: client to MediaAgent data transfer stream, set in the storage strategy
- Device Streams: MediaAgent to storage Media data transfer stream, set in each sub-client
- The value of Data Reader must be less than the value of Device Streams
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Which of the following is correct about the Huawei storage Oceanstor V3 storage system?
- One Ethernet port can be used to create multiple logical ports
- If you type Ethernet ports A and B into VLAN 2, by default the port A and B data are in the same drift group
- If binding port A and physical port B are added to the same VLAN, as long as one physical port in bonded port A fails, the service switches to Physical Port B
- When IP Fallback mode is set to Manual, when the port fails to recover, the active port link is in normal status and lasts longer than 1 minute, the system can switch the service to the primary port
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DAV (Distributed Authoring and Versioning) can solve issues that the HTTP protocol can not such as? (multiple choice)
- Rewrite the protection
- Resource Management
- Document Properties
- document encryption
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Erasure code redundancy technology is a data file is divided into ODC (M logo) equal length data blocks, generated by encoding RDC. Any of the RDC fragments can be restored out of the original file, which can tolerate up to ODC node failure, to achieve the purpose of data protection.
- True
- False
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Which of the following scenarios will cause the OceanStor 18000 to start local reconfiguration? (multiple selection)
- hard drive failure
- The system detected that CK could not be repaired
- Insert the drive within two minutes after being unplugged
- IO access returns SECTOR FAULT error
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Windows supports both MBR and GPT disk partitioning modes. For MBR disks, the following options are correct:
- windows operating system can create up to 4 partitions
- Single partition capacity size limit of 1TB
- The total number of primary partitions and main expansion partitions does not exceed 4 and the maximum number of primary partitions 4
- The maximum number of logical partitions on the main extended partition does not exceed 4
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Which of the following descriptions of the import parameters for the physical tape of the VTL6900 is correct?
- copy Mode: This mode to develop physical tape data copy to the corresponding virtual tape, at the same time the development of the physical tape recycling
- Direct AccessMode: This mode only copies the beginning of the physical tape 10MB data, contains the data stored on the tape backup software, without having to copy the backup data
- Recycle Mode: This mode is to block copy mode, the entire tape is copied to the virtual tape
- Recycle Mode: This mode will automatically recycle the tapes that have passed the data retention period
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Which of the following statements replacing the storage array controller is wrong?
- Before plugging and unplugging the controller, make sure that the service is stopped or has switched to the peer controller
- Before switching services to the peer controller, check that the multipathing software in the system is installed and effective on the host.
- Confirm Cache dirty data has been saved
- Master-slave controller must be switched to be replaced controller for backup
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Which of the following statements regarding the Huawei Oceanstor V3 hierarchical storage and Smart Cache is correct?
- A client business IO load random read that accounts for more than 60% using SATA, SAS for staging storage, use SSD to do cache, so it will effectively reduce costs and improve random performance indicators
- If hot spot data is scattered and changing rapidly, it is recommended to use tiered storage
- If there are many SSDs and hotspots, Smart Cache is the best choice
- If you have a small amount of SSD data, use a tiered storage disk for more utilization
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A customer purchases two OceanStor 9000 storage systems and deploys them in city A and city B. InfoReplicator is configured to ensure data reliability of production site A. Which statement is false?
- Due to system upgrade, primary/secondary switchover must be implemented for existing remote replication pairs. The prerequisites of primary/secondary switchover are as follows:
1. The health status of a remote replication pair is normal, and the replication link functions properly.
2. Write protection of the secondary directory has been canceled. - If the replication link is disconnected, pair properties can be modified only in the cluster where the primary directory resides at production site A. After the replication link is recovered, the modified pair properties are automatically updated to the secondary directory at the disaster recovery site.
- A channel authentication IP address must be assigned. This IP address is a static service IP address of any node in the remote cluster. The IP address is used to create a channel between the replication zones. The node must reside in the remote replication zone.
- The channel authentication password can be changed. If a replication link is disconnected after the channel authentication password is changed, the user must enter the new password again and keep the same password for the initiator and recipient of the replication zone channel so that the replication link can be recovered.
- Due to system upgrade, primary/secondary switchover must be implemented for existing remote replication pairs. The prerequisites of primary/secondary switchover are as follows:
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With Simpana in a multi-card, multi-network environment, you can use the data interface data interface pairs (DIP) to set the data from the source end-to-end network transmission path. Source and destination can use the host name and IP address to describe the network interface.
There are multiple network connections that can be configured to send multiple concurrent data streams. Based on this, which of the following configuration methods should be used? (multiple choice)
- Use the Client properties in the job configuration
- By configuring the ValutTracker strategy
- In the control panel data Interface pair configuration
- Use data IFPaires.exe to configure multi-stream concurrent DIP
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In a disaster recovery plan design, RTO and RPO are the most basic standards. For example, you need to start recovery within half a day after a disaster and the RTO value is twelve hours.
- True
- False
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With Redhat linux enterprise 6 system the df and du commands allow you to see the mnt capacity, as shown below. What causes the capacity shown to not be the same?
redhat: ~ # df -h / mnt
Filesystem Size Used Avail Use% Mounted on
/ dev / sdb 1008M 514M 443M 54% / mnt
redhat: ~ # du -hs / mnt
40k / mnt- The mnt directory mounted block device is abnormal
- The mnt directory is also mounted another block device and some files that are currently open.
- The mnt directory have been deleted
- This is a bug of the known du and df commands that need to be upgraded to the latest version
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When one of the nodes in the Huawei N8000 cluster fails, the service IP address of the node cannot be accessed. Which of the following methods can recover the affected services?
- Restart the failed node
- Use the other node’s business IP access
- Only manually switch the node’s service IP to the remaining nodes
- restart service
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Which of the following statements regarding the Quota Tree file system quota feature of OceanStor V3 is NOT correct? (Multiple Choice)
- Quota Tree can share through the agreement, and when it is being shared, it is not allowed to rename and delete.
- Can operate across Quota Tree’s move files (NFS protocol) or cut files (CIFS protocol).
- A hard link between two different Quota Trees is allowed.
- No hard link between two different Quota Trees is allowed.
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Two Standard Edition N8500 nodes created two file systems, namely fs01 and fs02 and the file systems are online. If the two file systems are set, then which of the following will appear?
- The file system is automatically offline and can not be pulled manually
- The file system is automatically offline, but it is also manually pulled
- file system will not automatically offline, but if you manually offline it and then try it offline
- The file system does not automatically offline, but it will succeed if you manually try to bring it offline again
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Which of the following is NOT correct regarding the backup RMAN?
- Backup slice size is unlimited, but its size can be set by maxpiecesize
- The backup piece is a binary file used to store the backup set information
- One or more backup pieces form a backup set
- A backup piece corresponds to a separate input output file
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