An administrator has a 4-node vSAN cluster, and all virtual machine storage policies are configured as RAID-1 FTT-1. The administrator puts Host-1 in maintenance mode using "Ensure Accessibility".
During this time, Host-2, which is holding the updated object replica, fails permanently. A few moments later, Host-1 exits maintenance mode.
What happens to the writes that were committed on Host-2 after Host-1 enters this mode?
A . Any writes to Host-2 that occurred after Host-1 entered maintenance mode are lost.
B. The latest writes are retrieved from backups.
C. The latest writes were also written on a third host and are applied to the stale components of Host-1 once the host exits maintenance mode.
D. The latest writes from Host-2 are applied to the stale components of Host-1 once the host exits maintenance mode.
Answer: C
Explanation:
In a vSAN cluster with RAID-1 FTT-1 storage policy, each virtual machine object has two replicas, each located on different hosts. When Host-1 enters maintenance mode using "Ensure Accessibility," vSAN ensures that the object’s components on Host-1 are accessible elsewhere in the cluster.
In this scenario, the latest writes that occurred on Host-2 after Host-1 entered maintenance mode are also written to the third host as part of the normal data replication process. Once Host-1 exits maintenance mode, vSAN applies these latest writes from the third host to the stale components of Host-1, ensuring that the object’s data is consistent across the cluster.
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