H13-611_V4.5 Exam Dumps - Huawei HCIA Storage Questions and Answers

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Not every RAID technology can improve write performance

In RAID 0, multiple hard drives are accessed simultaneously (parallel access), speeding up data access performance

The current RAID technology only uses the parity mechanism to protect the data

The performance of all RAID levels increases linearly with the increase in the number of member disks

The storage system can generate a snapshot in seconds

The snapshot LUN cannot be mapped to the host

Complete data copying is unnecessary

data use mapping table lookup

Automatic allocation: migration to the low-performance layer

Priority allocation from high-performance layer: migration to low-performance layer

Priority allocation from low-performance layer: migration to high-performance layer

Priority allocation from the capacity layer: automatic migration

The data is automatically and evenly distributed on the hard disks in the storage pool to avoid uneven heating and cooling of the hard disk, thereby reducing the storage system

Overall failure rate

Overcome the performance bottleneck of the traditional RAID reconstruction target disk (hot spare disk), making the reconstruction bandwidth write bandwidth no longer

It becomes the bottleneck of the reconstruction speed, which greatly improves the reconstruction speed, reduces the probability of double-disk failure, and improves the storage system.

Reliability.

There is no write penalty in RAID2.0+, which overcomes the write penalty in RAID 5 and RAID 6 levels in traditional RAID technology

The impact of the penalty on the write performance of the LUN has greatly improved the performance of the LUN

The data on a single LUN is distributed to many different hard disks, avoiding hard disk hot spots, making single LUN performance and

The capacity has been greatly improved

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Initial capacity allocation

Data layout analysis

Data migration

I/O monitoring

When the source LUN fails, service data can be recovered from any point in time before the fault occurred using the data backed up through HyperClone.

If a disk failure occurs on the source LUN of HyperClone, you can split the target LUN from the source LUN to continue providing services.

If a logical fault occurs on the source LUN, data can be reversely synchronized from the target LUN to the source LUN to recover services on the source LUN.

Multiple target LUNs can be created through HyperClone to provide the service data on the source LUN for multiple applications.

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