keep at least three up-to-date copies of your data; this can include the original copy, but all copies must be maintained. 2. Backups should be stored on at least two different storage mediums; for example: a cloud backup and a USB device. This can include a hard drive on your PC. 3. One (or more) backups should be stored "off-site". Cloud services such as Google Drive are ideal for personal use in this regard.