A backup is useful only if you can restore it
Three practical checks before you depend on a backup.
Know what is protected
Check that important documents, business records and application data are included.
Keep a separate copy
A copy on the same device may be lost in the same failure. Consider a separate device or suitable cloud backup.
Test restoration
Restore a sample file and check that you can open it. Ask for help if the backup process or its coverage is unclear.