Nextcloud AIO Backups on mounted share

Hi there, i have just moved to Nextcloud AIO 8.3.0 and found the Backup solution.
i have set it up to backup to a mounted sshd folder. /mnt/nc_backup.

is it possible to check if the volume is mounted before the backup run? or directly mount it before running?

i am a little bit scared that it is not mounted and fills up the local ssd…

thanks a lot!