When adding a disk to a host that was previously used in a decommissioned vSAN cluster the intended disk does not show among the available devices in disk management. Which action should be taken…

Question

Options

• AFormat the existing partition
• BCreate a 1GB metadata partition
• CDelete all device partitions
• DCreate a VMFS partition

• A
  7% (1)
• B
  14% (2)
• C
  71% (10)
• D
  7% (1)

Explanation

Disks previously used in a vSAN cluster retain vSAN-specific partition metadata that prevents ESXi from recognizing them as available devices - deleting all existing partitions (C) wipes this stale layout and allows the disk to appear cleanly in disk management. Option A is wrong because simply formatting a partition leaves the partition table intact, which still blocks discovery. Option B is a distractor referencing vSAN's internal metadata structure, but you never manually create that partition - vSAN handles it automatically. Option D is wrong because creating a VMFS partition is a step taken after a disk is already visible and claimed, not a prerequisite for visibility.

Memory tip: Think of it as "clearing the past life" - a disk with a vSAN history must have all partitions erased (a full wipe) before ESXi will treat it as a blank, claimable device. If you can't see it, delete everything on it first.

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