NetApp NS0-593 Exam - Topic 4 Question 79 Discussion

Actual exam question for NetApp's NS0-593 exam

Question #: 79
Topic #: 4

When you review performance data for a NetApp ONTAP cluster node, there are back-to-back (B2B) type consistency points (CPs) found occurring on the loot aggregate.

In this scenario, how will performance of the client operations on the data aggregates be affected?

CDuring B2B processing, all I/O to the node is stopped.

ADuring B2B processing, clients will be unable to write data.

DDuring B2B processing, clients will be unable to read data.

BData aggregates will not be affected by B2B processing on another aggregate.

Show Suggested Answer

Suggested Answer: B

A B2B type consistency point (CP) occurs when a new CP is triggered before the previous CP is completed, due to the second memory buffer reaching a watermark. This can cause write latency to increase as user write operations are not replied until a write buffer frees up. However, this only affects the aggregate that is undergoing the B2B processing, and not the other aggregates on the same node. Therefore, the performance of the client operations on the data aggregates will not be affected by B2B processing on the root aggregate.Reference=What is the Back-to-Back (B2B) Consistency Point Scenario?,What are the different Consistency Point types and how are they measured in ONTAP 9?,What are the different Consistency Point types and how are they measured?

by Dyan at Jan 27, 2026, 04:22 AM

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Theresia

6 days ago

I think I saw a practice question about consistency points affecting throughput. If B2B CPs are frequent, it might slow down read/write operations on the aggregates.

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Chauncey

11 days ago

I remember something about B2B CPs causing latency issues, but I'm not entirely sure how severe the impact is on client operations.

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Ashlyn

16 days ago

Hmm, this is a tricky one. The back-to-back CPs on the root aggregate are probably going to introduce some performance degradation for the client operations. I'll need to review my understanding of how ONTAP handles consistency and how that interacts with client workloads.

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Jacinta

21 days ago

Back-to-back consistency points on the root aggregate? That's not good. I bet that's going to cause a lot of latency and slowdown for the client workloads. I'll need to think through the ONTAP architecture and how that could affect data access.

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Susy

26 days ago

Okay, I remember learning about consistency points in ONTAP. If there are back-to-back CPs on the root aggregate, that's likely going to impact client performance, since the system will be busy with internal housekeeping tasks. I'll need to analyze the specifics.

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Eura

1 month ago

Hmm, back-to-back consistency points on the root aggregate? That sounds like it could cause some performance issues for client operations. I'll need to review my notes on ONTAP internals.

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Leslee

1 month ago

I'm not too familiar with NetApp ONTAP, so I'll need to think through this carefully and try to apply my general knowledge about storage systems.

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