Storage Spaces Direct - New Volume on Virtual Disk

storage spaces direct operates lower than volume level, so you can't add a volume. Microsoft's most detailed how-to guide for now is here: https://technet.microsoft.com/en-us/windows-server-docs/storage/storage-spaces/add-nodes?f=255&MSPPError=-2147217396

Also, may I wonder what is the reason to set additional parameters? I'm learning s2d myself so would be glad to know if that provides any performance perks.