Nutanix Exam NCS-Core Topic 1 Question 73 Discussion

Actual exam question for Nutanix's NCS-Core exam

Question #: 73
Topic #: 1

A consultant deploys a new ESXi-based Nutanix cluster and migrates a sphere deployment to the cluster, After completing the deployment, the customer states they are experiencing VM performance issues.

Upon observing logs and performance data, the consultant identified the following symptoms.

Excessive read/write 1/Os on CVMs

Excessive Motion of VMs

What is causing this issue?

ASphere cluster DRS migration threshold is set to Conservative.

BDRS is in use and the cluster is configured to use Erasure Coding.

CDRS is in use and the cluster is configured to use Deduplication.

DSphere cluster DRS migration threshold is set to Aggressive

Show Suggested Answer

Suggested Answer: D

The customer is experiencing VM performance issues characterized by excessive read/write I/Os on CVMs and excessive motion of VMs due to the Distributed Resource Scheduler (DRS) in an ESXi-based Nutanix cluster. This is likely caused by the DRS migration threshold being set to Aggressive, which leads to frequent rebalancing of workloads across the cluster, causing high I/O and VM motion. Adjusting this setting to a less aggressive level can help reduce unnecessary VM motions and stabilize performance. Reference: Nutanix Bible, Nutanix University NCS-Core 6.8 learning materials

by Leonie at Nov 18, 2024, 07:24 AM

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