An administrator managing a vSAN cluster of six-nodes with policy FTT-2/RAID-6 decided to put one of the nodes in maintenance mode using the "Full-data migration" option. What will happen after this…

Question

Options

• AThe host will enter in maintenance mode and the data will remain accessible until the host exits
• BThe system will prompt to add an additional host to the cluster in order to preserve the policy
• CThe host will enter in maintenance mode and only data with no redundancy will remain
• DThe host will enter into maintenance mode if both components of a certain object are residing on

• A
  14% (4)
• B
  72% (21)
• C
  3% (1)
• D
  10% (3)

Explanation

Let's take a look at a few unique scenarios with regard to maintenance mode. First, let's see what will happen if you have 6 hosts within your cluster, you have applied a policy containing FTT=2/RAID-6, and you want to place a host in maintenance mode using the 'Full data migration' option. This means all the data residing on the host will be evacuated to another host within the cluster. With this type of data configuration, the system will prompt you to add an additional host to the cluster in order to preserve the policy compliance. The policy will always require there must be two failures that can be tolerated, even during cluster reduction due to maintenance mode removing a host. Note that a minimum of six hosts is required to support a storage policy with RAID-6(FTT=2) erasure coding. https://blogs.vmware.com/virtualblocks/2020/02/06/what-happens-vsan-host-in-maintenance-

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