2V0-21.23 Question 78
Select 3An administrator is designing a vSAN cluster for a data center. The cluster will consist of 6 ESXi hosts, each with a combination of SSDs and HDDs. The administrator wants to ensure that the vSAN implementation provides high availability, fault tolerance, and efficient storage utilization. Which of the following configurations and considerations are essential for this vSAN implementation?
- A
Each host in the vSAN cluster must contribute at least one SSD to the disk group.
- B
The vSAN cluster requires a minimum of five ESXi hosts to ensure fault tolerance.
- C
The vSAN storage policy must be configured to define the number of failures to tolerate (FTT).
- D
All SSDs and HDDs must be on the VMware Compatibility Guide for vSAN.
- E
Deduplication and compression are mandatory for all vSAN implementations.
Show answer and explanation
Correct answers: A, C, D
Explanation
When designing a vSAN cluster, it is crucial to ensure that each host contributes to the disk group (minimum of one SSD for caching), that the vSAN storage policy is configured to meet fault-tolerance requirements, and that all hardware is validated through the VMware Compatibility Guide. While deduplication and compression are valuable, they are optional features, and the minimum host requirement for fault tolerance in vSAN is three ESXi hosts, not five.
- A. Correct.
Correct. Each host in the vSAN cluster must contribute at least one SSD to the disk group to act as the cache tier in the vSAN architecture.
- B. Incorrect.
Incorrect. A vSAN cluster requires a minimum of three ESXi hosts for fault tolerance, not five. However, more hosts may provide better fault-tolerance capabilities.
- C. Correct.
Correct. The vSAN storage policy is critical for defining the desired level of fault tolerance, including the 'Failures to Tolerate' (FTT) parameter.
- D. Correct.
Correct. All SSDs and HDDs used in the vSAN cluster must be listed on the VMware Compatibility Guide to ensure optimal performance and support.
- E. Incorrect.
Incorrect. Deduplication and compression are advanced features in vSAN, but they are not mandatory for all implementations. They are optional and can be enabled based on the use case and licensing.