You have to test your backup

Recently I saw a posting from a person, who had backup in the cloud and it had failed when he needed it. Of cause the backup company should make sure this does not happen, but they got some data corruption.

When having a backup, you must know, that you can only rely on yourself. Trust no one. That is the whole point of a backup.

If you want to be sure that you can restore you backup, you have to try it! How often depends on how much time you have and how much you love your backup, but you can only rely on yourself to test that your backup will work and that others have not made a mistake.

Another idear: Just as you might have the data on 2 harddrives, you might have it in 2 backup providers. They have crashes and they do go bankrupt.