VCP-VCF Administrator 2024 Question 244
Single answerAn administrator is managing a VMware Cloud Foundation environment with vSAN configured as the primary storage. The administrator needs to create a vSAN storage policy that ensures a virtual machine's data is protected against a single disk or host failure while optimizing capacity usage. Which configuration setting should be included in the storage policy for this requirement?
- A
Failures to Tolerate (FTT) = 1, RAID-1 (Mirroring)
- B
Failures to Tolerate (FTT) = 2, RAID-1 (Mirroring)
- C
Failures to Tolerate (FTT) = 1, RAID-5 (Erasure Coding)
- D
Failures to Tolerate (FTT) = 2, RAID-6 (Erasure Coding)
Show answer and explanation
Correct answer: C
Explanation
The administrator needs to configure a storage policy that balances failure tolerance and capacity optimization. 'Failures to Tolerate (FTT) = 1, RAID-5 (Erasure Coding)' is the correct choice because it ensures the VM's data is protected against a single disk or host failure while using less capacity compared to RAID-1. RAID-5 is specifically designed for environments needing both failure protection and efficient storage utilization.
- A. Incorrect.
This configuration provides protection against a single failure, but RAID-1 (Mirroring) consumes more capacity compared to RAID-5 (Erasure Coding). While it satisfies the failure tolerance requirement, it is not optimal for capacity usage.
- B. Incorrect.
This configuration provides protection against two failures, which exceeds the requirement specified in the question. Additionally, RAID-1 (Mirroring) consumes more capacity and is not optimal for this scenario.
- C. Correct.
This configuration meets the requirement of tolerating a single failure and also optimizes capacity usage by using RAID-5 (Erasure Coding). RAID-5 requires less capacity overhead compared to RAID-1 while still providing redundancy.
- D. Incorrect.
This configuration provides protection against two failures, which exceeds the requirement of tolerating a single failure. RAID-6 (Erasure Coding) also introduces more overhead and is not optimal for the scenario described.