CA Vtape is defined to the operating system like any other mainframe tape device and can be utilized by any job or task running on z/OS.
FDR/Upstream for Linux on System z submits batch jobs under z/OS to perform backups. Those backups can utilize any mainframe tape device which would include CA Vtape.
CA Vtape does not require any special configuration for use by FDR/Upstream for Linux on System z.
Dean