VMware Cloud Director Specialist (2020) — Question 16

Why is the Pass-Through mode preferred over HBA mode for disks connected to RAID controller in a vSAN environment?

Answer options

• A. It does not require an ESXi host to be rebooted when a disk fails as part of the disk change procedure.
• B. It requires an ESXi host to be rebooted when a disk fails as part of the disk change procedure.
• C. It supports RAID5 and RAID6, which is required by vSAN to provide protection against disk failure.
• D. It provides better performance and additional features such as de-duplication and compression.

Correct answer: A

Explanation

The correct answer, A, highlights that Pass-Through mode allows for disk changes without needing to reboot the ESXi host, making maintenance easier. In contrast, option B is incorrect as it states that a reboot is required, which is not the case for Pass-Through mode. Options C and D, while discussing important features, do not address the specific reason for preferring Pass-Through mode in relation to host reboots during disk failure scenarios.