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Exam NS0-161 topic 1 question 9 discussion

Actual exam question from Netapp's NS0-161
Question #: 9
Topic #: 1
[All NS0-161 Questions]

You want to improve the write performance of NL-SAS volumes serving data on your ONTAP. You also want to keep the performance consistent during a possible controller failover.
In this scenario, which feature do you use? (Choose the best answer.)

  • A. Flash Cache
  • B. Flash Pool
  • C. FlexCache
  • D. FabricPool
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by svm95 at Dec. 2, 2020, 10:52 a.m.

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icase81
Highly Voted 3 years, 10 months ago
The answer can only be B. A: Flash Cache is read only. B: SSD cache used for read and write cache, with a pool of disks spread over two nodes in a cluster C: FlexCache is used on a remote cluster to help lower latency, not on a primary cluster, and would have nothing to do with failover. D: Fabric Pool is using cloud storage to tier off cold data. That leaves only B as a valid answer.
upvoted 8 times
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khk141
Most Recent 3 years, 3 months ago
I think it's B.
upvoted 1 times
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Westy28
3 years, 7 months ago
I agree with icase8. The answer can only be B.
upvoted 1 times
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Arnab05
3 years, 10 months ago
Data is first written to cache and later to disk during CP. So I guess the answer is A
upvoted 2 times
icase81
3 years, 10 months ago
FlashCache is read-only cache. https://www.netapp.com/pdf.html?item=/media/19759-ds-2811.pdf
upvoted 1 times
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Torus
3 years, 11 months ago
Correct answer is B, Flash Pool. Flash Cache is HW based (affected by a failover) and improves only reads.
upvoted 3 times
Metasploit
3 years, 8 months ago
B Flash Cache is volatile. Flashpool config is best as SSDs will keep Hot data in an event of failover happening.
upvoted 1 times
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BroerK
3 years, 11 months ago
Agree, B https://library.netapp.com/ecmdocs/ECMP1196912/html/GUID-B347C746-FD91-484D-8BA6-A23D7C05EABE.html
upvoted 2 times
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svm95
3 years, 12 months ago
I think the answer is B. Flash Cache is a PCI-E card in the controller modules. Flash Pool is SSD's in an HDD aggregate. During failover, access to the aggregate is consistent, but not to the controller module.
upvoted 2 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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