You have a three-node cluster in a “Pair +1” configuration. Two nodes are connected to shared
storage and the third is not. You choose only one quorum disk device.
What is the problem?
A.
A Pair +1 cluster requires both a quorum disk device and a quorum server quorum device
B.
There is no problem. Since two nodes are connected to the shared storage device, you should
use exactly one quorum disk device.
C.
The problem is in the “Pair + 1” configuration. Since your third node has no storage connected
it is incapable of running clustered applications anyway.
D.
Even with one quorum disk, you will still only be able to run the cluster if two nodes are present.
But this would be the same if you had no quorum devices at all.