It's a different disk on the same server for you, maybe. But it could just as easily be network storage or whatever is convenient. The logic is that these backups can take up a huge amount of space. Behind the scenes, the backup file is not going into Moodle's filestore which is hashed and only available through Moodle's UI. These external backups are just ordinary files. This is a big advantage if something nasty happens.
It's possible to recover the backup but now needs a manual step to recover the file and re-upload it.
Consider that automated backups will mostly be used to recover a course in some sort of failure scenario. Not something that happens every day. Normal backups still are immediately accessible as before.
It's possible to recover the backup but now needs a manual step to recover the file and re-upload it.
Consider that automated backups will mostly be used to recover a course in some sort of failure scenario. Not something that happens every day. Normal backups still are immediately accessible as before.