VMware vSphere 6 Beta Foundations — Question 6

Consider the following scenario in a vSAN cluster that contains six hosts:
✑ All virtual machines are assigned the vSAN Default Storage Policy, which has not been modified.
✑ Deduplication and compression are not enabled.
✑ Every vSAN disk group in the cluster contains one cache device and five capacity devices
What happens when a capacity devices transmits SCSI sense code errors and fails?

Answer options

• A. All components on the affected device are marked "degraded". vSAN attempts to rebuild the components on other healthy devices in the cluster without delay.
• B. All components on the affected device are marked "degraded". The host containing the affected drive is placed into maintenance mode using the ‘ensure accessibility’ option.
• C. All components on the affected device are marked "offline". vSAN attempts to rebuild the components on other healthy devices in the cluster after 60 minutes by default.
• D. The host containing the affected device is placed into maintenance mode using the "ensure accessibility" option. An administrator must log into the vSphere

Correct answer: A

Explanation

The correct answer is A because when a capacity device fails in a vSAN cluster, the components on that device are marked as 'degraded' and vSAN immediately tries to rebuild those components on healthy devices to maintain data availability. Option B is incorrect because the host is not placed into maintenance mode automatically; option C incorrectly states that components are marked 'offline', and option D incorrectly describes the maintenance mode process as requiring administrator intervention.