VCP-VCF Administrator 2024 Question 87
Select 2You are tasked with deploying a stretched cluster across two availability zones in a VMware Cloud Foundation environment. What are the key requirements that must be met to ensure a successful deployment?
- A
The latency between availability zones must not exceed 5 milliseconds round-trip time (RTT).
- B
A minimum of three fault domains must be configured across the stretched cluster.
- C
The vSAN Witness Appliance must be deployed in a third, separate location from the two availability zones.
- D
The ESXi hosts in each availability zone must have identical hardware configurations, including CPU models and memory sizes.
- E
The stretched cluster must have at least one dedicated vSphere Distributed Switch (vDS) for replication traffic.
Show answer and explanation
Correct answers: A, C
Explanation
Deploying a stretched cluster across availability zones in VMware Cloud Foundation has specific requirements to ensure high availability and operational efficiency. The latency between availability zones must be 5 milliseconds or lower to support vSAN operations. Additionally, a vSAN Witness Appliance is essential for quorum and must be located in a separate site to avoid a single point of failure. While other factors, such as fault domains, hardware consistency, and network configurations, play important roles, not all of them are strict requirements for deploying stretched clusters.
- A. Correct.
Correct: A stretched cluster requires a maximum round-trip time (RTT) latency of 5 milliseconds or less between the two availability zones to ensure vSAN and cluster operations function optimally.
- B. Incorrect.
Incorrect: A minimum of two fault domains is required for a stretched cluster, as each availability zone is treated as a fault domain. A third fault domain is not mandatory.
- C. Correct.
Correct: The vSAN Witness Appliance is required to be deployed in a third location that is separate from the two availability zones to avoid a single point of failure.
- D. Incorrect.
Incorrect: While it is recommended to have consistent hardware configurations across hosts in a cluster for performance and compatibility reasons, it is not a strict requirement for stretched cluster functionality.
- E. Incorrect.
Incorrect: While a vSphere Distributed Switch (vDS) is commonly used for network traffic management, it is not specifically required to dedicate a vDS for replication traffic in a stretched cluster deployment.