H13-629 : HCIE-Storage : Part 14
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The backup back-end capacity is derived from the initial capacity and data increment.
- True
- False
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In the mirroring scenario of OceanStor VIS6600T, an engineer detected an abnormal mirroring alarm on the VIS6600T. When you login to the ISM interface, you can view the mirror status of the volume in the corresponding logical disk group based on the alarm and find that the status of a volume in the mirror is NODEVICE.
The reason may be: (multiple choice)
- The disk on the array on which the failed mirrored volume failed
- Array where the failed mirrored volume is powered down
- The RAID array is degraded on the array where the failed mirrored volume is residing, and the hot spare is being rebuilt
- All optical links between the VIS 6600T and the array in which the failed mirror volume is located have failed
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An N8000 file system can be used when offline command to query file system flag:
echo “8192B.p S” | fsdb -t vxfs / dev / vx / rdsk / sfsdg / sfsvol | grep flag
Where sfsvol is the name of the file system and may appear as flsgs 0 mod 0 Clean 3c or flags 4000 mod clean 3c if flags last bit is 0, then the file system is set.
- True
- False
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Info Replication supports copying the data at the same time using the home directory, extended attributes, ACL (access control list), WORM, and CIFS. NFS configuration information is also copied to the slave. When a disaster occurs, the master and slave stations can quickly take over after the switchover.
- True
- False
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In backup design, the required capacity for backup data (without deduplication) on site A is 3000GB and the required capacity for backup data (without deduplication) on site B is 1500GB. It is required to replicate the backup date from site B to site A, the deduplication ratio for replication is 3. The back-end capacity on site A should be no less than (Ignore redundancy ratio):
- 4500GB
- 3500GB
- 2500GB
- 1500GB
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Scale out is a scale-out architecture that upgrades storage systems typically by increasing the number of nodes by expanding more controllers to meet user data growth demand. Huawei OceanStor V3 storage system supports the use of smart IP card to achieve IP scale out.
- True
- False
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Because the first three nodes of Huawei OceanStor 9000 form an ISM cluster, you need to connect NIC0 of the first three storage nodes to the management switch.
- True
- False
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In Huawei OceanStor 9000, the client that processes the write request performs data fragmentation according to the protection level specified in the file, divides the data chip, writes the corresponding node on power-saving memory, and then calculates the parity of each node data pieces, and writes to each node’s power-saving memory. After the node writes the power-save memory, the write operation is successful.
- True
- False
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NTFS (new technology file system) is a windwos NT environment file system, on the NTFS file system, which of the following arguments is not correct?
- NFS design ideas include stability, security, support for large-capacity storage devices
- NTFS will all the data is a file, the file system metadata is also stored as ordinary files
- Each directory and file attribute information is included in the MFT, MFT records the name of the file and directory, size, data storage location information
- NTFS file space allocation unit is the sector, the default is 512 bytes
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Due to business needs, when a reboot operation is performed on a VTL6900 (including the VTL engine, SIR engine, storage unit, and optical switch) which description is correct? (Multiple choice)
- Power off the VTL6900 as a whole without any special requirements
- Restart the device according to the following restart sequence:
VTL engine restarted
SIR engine restart
Fiber Channel switch and storage unit restart - restart the device as follows to restart the device:
SIR engine restart
VTL engine restarted
Fiber Channel switch and storage unit restart - If the VTL engine is configured for A and B two-node clusters, suspend the VTL failover and then restart the VTL engines A and B in turn
After all the two nodes of A and B are normally started, restore the VTL failover
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The customer online database runs on an OceanStor S5500T storage system. The database uses a total of 6 LUNs. Now it’s time to put the number on the S5500T. Which of the following statemetns are correct regarding the use of array-side functions to complete the data migration? (multiple choice)
- Multiple LUNs for Customer Business. When implementing data migration using remote replication, you need to add multiple remote replication tasks to a consistency group
- Use remote replication to complete online data migration
- LUN copy or remote replication. After the migration is complete, you do not need to do any configuration on the host to start the service
- LUN copy data migration. During the copy process, you can dynamically change the migration rate
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In OceanStoe VIS6600T delivery scenarios, multiple vendors are often protected. To avoid unpredictable compatibility issues during project implementation you need to collect compatibility information before the project is implemented. The compatibility information collected below is in accordance with the specifications. (multiple choice)
- The host operating system version is AIX
- Fiber switch manufacturer model brocade 300, version v6.3.1a
- Storage vendor HITACHI, model number and version ASM 2500,0897 / H-Z
- The host HBA card manufacturer and model: Emulex LPe11002
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In dual active disaster recovery solution architectures, the two FC switches will use the same domain ID after cascading to divide the zone.
- True
- False
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Which of the following are correct regarding the Huawei OceanStor 9000 V100R001C30 products for video monitoring services? (multiple choice)
- To improve the reliability of the video data storage device, the user turns on the securevideo feature of the data disk using a 4 + 1 protection level
- The user turns on the securevideo feature, with two data corruptions if the data disk uses a 4 + 1 protection level and only 3 for a write operation
- Users open the securevideo feature data consistency scanning, the system does not complete the data files, will be cleaned up
- After the user turns on the securevideo feature, the file corruption event has been reported while reading and writing files, and the data recovery failure alarm is no longer reported
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Which Huawei OceanStor V3 storage system prefetch strategy is correct?
- Intelligent prefetching for a single data stream read application, or cannot determine the sequence of read applications
- variable prefetching suitable for fixed-size sequential read applications, such as multi-user liunx media on demand, users use the same code stream
- Fixed prefetch for database applications
- Not prefetched for multi-user multimedia on demand
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Simpana can use VMware VADP to backup data, and there are several transport modes are available in VMware. Among these modes, ( ) transport mode transmits backup data over the TCP/IP connection between the ESXi server and the proxy computer?
- SAN
- NAS
- hot_add
- NBD
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When planning the parameter settings of the N8500 (V200R001) file system, the following description is incorrect
- For striped type file systems, the number of columns does not exceed 8, preventing data from being too discrete
- If the file system exceeds 1TB, select 8192 as the blockize
- Create a striped file system, the number of columns consistent with the number of RAID groups
- When the number of documents exceeds 1000W, it is recommended to open the quota
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In a Huawei N8500 cluster system VCS Error information is stored in which of the following log files? (Multiple choice)
- / var / log / messages
- / var / log / hima_message
- /var/VRTSvcs/log/engine_A.log
- / var / log / warn
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When configuring the protection level of Huawei OceanStor 9000 directory, if the data protection level is set to 4 + 2, the corresponding metadata will generate 3 copies of the same mirror.
- True
- False
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A Simpana backup media pool configuration principle is:
- According to the different retention time to divide the media pool
- As many media pools as possible to improve performance and utilization
- According to the purpose of the disk to partition the media pool
- According to the number of storage strategies or use to divide
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