Problems when scaling or de-scaling systems, usually via an SMP connector.
Drive problems in a shared drive system
When using the multi-share disk function in a multi-node, it allows the drives from the second, third, or fouth node as if it was local. When de-scaling the system back into a single node, be aware that one of the nodes will not have the OS installed.
No Video
In a scaled system, the video will be active only from the primary node while the dongle cable has access to the keyboard and video for each node.