When attempting to add a directly attached disk device to a host disk group, the intended disk does not show among the available devices in disk management.
Which action should be taken?
A. Delete all device partitions
B. Create a 1GB metadata partition
C. Format the existing partition
D. Create a VMFS partition
After re-read the question, the answer is A.
Answer : C
If you have added a device that contains residual data or partition information, you must remove all preexisting partition information from the device before you can claim it for vSAN use.