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Storage question

Storage question

Created: Aug 27, 2021 13:31:02Latest reply: Aug 28, 2021 07:27:40 332 4 0 0 0

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Q1. Which of the following statements about snapshot LUNs of huawei Ocenastor hybrid flash storage systems are true? Mulitple answers

a. after a snapshot is activated , copy on write (COW) is performed first when an application servers sends a write reuqest to the source (LUN)

b. After a snapshot is activated , data is directly written to the sanpshot LUN when an application servers sends a write request to the source LUN

c. For a newly create snapshot , data in the COW space is the source data

d. For a newly created snapshot , no data existis in the COW space

i chose a,b,c

Q2. What scale technologies are not supported by Huawei Ocenastor Hybrid Flash storage ?

A. SAS scale out

B. IB Scale up

C. IP scale-out

D. PCIe scale out

i chose a,b,c also

Please advise is my answer correct?

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stephen.xu Admin Created Aug 27, 2021 14:16:17

Hi, dear

For the first question:

The answer is A, C

We can see the following part of the Working Principle:

https://support.huawei.com/hedex/hdx.do?docid=EDOC1100006144&id=EN-US_TOPIC_0142739254&lang=en

snapshot active

cow data

For the second question:

The answer is A B (I think)

I did not find some materials, I will update it soon.

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simchamnan Created Aug 28, 2021 07:27:33 (0) (0)

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^2#

stephen.xu Admin Created Aug 27, 2021 13:39:49

Please kindly wait for a minute.

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stephen.xu Admin Created Aug 27, 2021 14:16:17

Hi, dear

For the first question:

The answer is A, C

We can see the following part of the Working Principle:

https://support.huawei.com/hedex/hdx.do?docid=EDOC1100006144&id=EN-US_TOPIC_0142739254&lang=en

snapshot active

cow data

For the second question:

The answer is A B (I think)

I did not find some materials, I will update it soon.

View more

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simchamnan Created Aug 28, 2021 07:27:33 (0) (0)

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simchamnan

Created Aug 28, 2021 07:27:40

Good

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