Backup your data from your Synology to the datacenter with daDup and Hyperbackup
Use Archiware P5 to make back-ups to daDup S3 storage. Safe in the datecenter to an external location.
Back-up Windows, Mac and Linux to daDup with Duplicati
Use Syncback to sync data to daDup in the datacenter
Store passwords securely with Keepass
Make a backup of your Joomla site with Akeeba to daDup
Use daDup storage in Nextcloud or OwnCloud