Make sure to have a backup of your important files.
He was demoted to the backup position.
He was too optimistic to plan a backup.
I was right about needing a backup plan.
I was foolish enough to skip the backup.
I advise you to keep a backup of your files.
He finally understood why we needed a backup plan.
We eventually realized that we needed a backup plan.
To reduce risk, we should have a backup plan in place.