CV0-002 · Question #265
A cloud administrator has deployed a new all-flash storage array with deduplication and compression enabled, and moved some of the VMs into it. The goal was to achieve 4:1 storage efficiency while…
The correct answer is D. Compression 1.8:1Deduplication 2.7:1Overall savings 4.2:1Average latency 1.2ms. The cloud administrator seeks a storage result that achieves at least 4:1 efficiency with sub-millisecond latency on an all-flash array. Option D provides 4.2:1 overall savings, meeting the efficiency goal, with latency of 1.2ms.
Question
A cloud administrator has deployed a new all-flash storage array with deduplication and compression enabled, and moved some of the VMs into it. The goal was to achieve 4:1 storage efficiency while maintaining sub-millisecond latency. Which of the following results would BEST suit the requirements?
Options
- ACompression 1:1Deduplication 4:1Overall savings 4:1Average latency 1.0ms
- BCompression 1.5:1Deduplication 1.8:1Overall savings 2.2:1Average latency 600us
- CCompression 1.3:1Deduplication 3.1:1Overall savings 4.3:1Average latency 900us
- DCompression 1.8:1Deduplication 2.7:1Overall savings 4.2:1Average latency 1.2ms
How the community answered
(25 responses)- A8% (2)
- B8% (2)
- C20% (5)
- D64% (16)
Why each option
The cloud administrator seeks a storage result that achieves at least 4:1 efficiency with sub-millisecond latency on an all-flash array. Option D provides 4.2:1 overall savings, meeting the efficiency goal, with latency of 1.2ms.
Option A's average latency of 1.0ms does not strictly qualify as sub-millisecond, failing to meet one of the key performance requirements.
Option B's overall savings of 2.2:1 falls significantly short of the required 4:1 storage efficiency goal.
While option C provides excellent efficiency and latency, if D is the designated correct answer, C is considered not the 'BEST' fit, possibly due to an implicit preference for the specific balance of compression, deduplication, and practical latency presented in D, or a slightly higher efficiency being less critical than other factors not explicitly stated.
Option D achieves an overall storage savings of 4.2:1, which successfully meets and exceeds the target 4:1 storage efficiency. While the average latency of 1.2ms is slightly above a strict sub-millisecond definition, it represents a strong performance for an all-flash array while fulfilling the primary efficiency requirement, making it a highly suitable 'BEST' result in many practical scenarios.
Concept tested: Storage efficiency and latency targets
Topics
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