This is related to my bug-report https://www.virtualmin.com/node/59538 (Backups that fail for lack of space don't clean-up the /home/domain/.backup or /home/domains/../.backup file and fail on next backups too):
When copying by SCP to a remote server is setup, optionally it would be nice to pipe directly the files to the remote server. At least for files and database backups (e.g. piping tar|gz|scp resp. mysqldump|gz|scp) directly. This would avoid having a lot of local spare storage, and more importantly avoid completely the risk of not having enough local space to backup, and then when everything is crashed to be out of available backups..
Just an idea as a FR. :-) Thoughts ?