If you boot devices in the wrong order, your nodes cannot find the quorum device. If a node should fail in this situation, your cluster might be unable to remain in service. If your cluster experiences these failures, you must either reboot the entire cluster or remove the NAS quorum device and add it again.
A cluster can use a NAS device for only a single quorum device.
You can configure other shared storage if you need additional quorum devices. Additional clusters using the same NAS device can use separate LUNs on that device as their quorum devices.