VCP-VCF Administrator 2024 Question 243
Select 2You are a VMware Cloud Foundation Administrator tasked with configuring a vSAN storage policy to ensure that a critical virtual machine (VM) remains highly available even in the event of a single host failure. The cluster consists of 5 hosts, and you want to configure the policy to ensure that the VM's data is protected while optimizing storage consumption. Which configuration settings should you choose for the storage policy?
- A
Failures to Tolerate (FTT) = 1, RAID-1 (Mirroring)
- B
Failures to Tolerate (FTT) = 2, RAID-6 (Erasure Coding)
- C
Failures to Tolerate (FTT) = 1, RAID-5 (Erasure Coding)
- D
Failures to Tolerate (FTT) = 2, RAID-1 (Mirroring)
- E
Failures to Tolerate (FTT) = 0, RAID-0 (Striping)
Show answer and explanation
Correct answers: A, C
Explanation
To ensure a single host failure tolerance in a 5-host vSAN cluster while balancing storage consumption, two valid configurations are available: FTT=1 with RAID-1 (Mirroring) and FTT=1 with RAID-5 (Erasure Coding). RAID-1 provides redundancy by creating a full mirror of the data but is less storage-efficient. RAID-5, on the other hand, achieves the same failure tolerance with better storage efficiency by using parity. Both options meet the requirements, but the choice depends on the trade-off between performance and storage efficiency.
- A. Correct.
This option provides a single host failure tolerance by mirroring the data across two hosts (RAID-1). It is suitable for scenarios where high availability is required but storage efficiency is less of a concern.
- B. Incorrect.
This option provides protection against two host failures using RAID-6, but it requires a minimum of 6 hosts. Since the cluster only has 5 hosts, this configuration is not valid.
- C. Correct.
This option provides a single host failure tolerance using RAID-5, which is more storage-efficient compared to RAID-1. It is a valid option for the given requirements.
- D. Incorrect.
This option provides tolerance against two host failures using RAID-1 mirroring. However, it is not an optimal choice for this scenario since it consumes significantly more storage and is unnecessary for only one host failure tolerance.
- E. Incorrect.
This option does not provide any failure tolerance as it uses RAID-0 (striping), making it unsuitable for the critical VM that requires high availability.