What do you mean here?
“Not supported” means “not supported”. You do it on your own responsibility, and if it fails because of a networked file system, the node will not be reinstated. I’ve briefly operated an SMB-based storage node and I know it can work, but I had to do additional engineering and it wouldn’t be Storj Inc.'s fault if I made a mistake doing so.
Storj Inc. does not test this configuration, does not promise it will be reliable, will not reinstate disqualified nodes on SMB.