2V0-21.23 Question 364
Single answerA VMware administrator is managing a vSphere cluster with vSphere Cluster Services (vCLS) enabled. The cluster is running out of resources, and it is critical to prioritize workloads by freeing up resources consumed by vCLS agent VMs. Under which scenario would enabling vCLS retreat mode be appropriate?
- A
When the cluster is running workloads that require the highest levels of resource availability, and additional resources are needed immediately.
- B
When there are no DRS or HA features enabled in the cluster, and vCLS agent VMs are consuming unnecessary resources.
- C
When the cluster is running in a degraded state and has lost connectivity to the vCenter Server for an extended period.
- D
When the administrator wants to permanently disable vCLS agent VMs to avoid resource overhead.
Show answer and explanation
Correct answer: B
Explanation
vSphere Cluster Services (vCLS) agent VMs are necessary for enabling cluster-level features such as DRS and HA. However, if these features are not in use (e.g., DRS and HA are not enabled), the administrator may enable vCLS retreat mode to reduce unnecessary resource consumption by the vCLS agent VMs. It is critical to understand that retreat mode is not for disabling vCLS permanently but rather for specific use cases where cluster-level services are not required.
- A. Incorrect.
Incorrect: vCLS retreat mode is not designed to prioritize workloads actively running in the cluster. It is specifically for scenarios where vCLS functionalities, such as DRS and HA, are not required.
- B. Correct.
Correct: Enabling vCLS retreat mode is appropriate if the cluster does not use DRS or HA and the vCLS agent VMs are consuming unnecessary resources. This allows the administrator to free up resources for other workloads.
- C. Incorrect.
Incorrect: vCLS retreat mode is not required for clusters in a degraded state or when connectivity to vCenter Server is lost. vCLS is designed to operate independently of vCenter Server for short periods.
- D. Incorrect.
Incorrect: vCLS retreat mode is not intended to permanently disable vCLS agent VMs. It is a temporary mechanism to manage resource usage in specific scenarios.