Digital photographers generate a lot of data.
A robust professional backup process included at least these attributes:
- Physical redundancy: at least three separate backups stored safely away from the computer.
- Process: not wiping out all backups while backing up!
- Verification of file system integrity on the backup drives.
- Verification of data integrity for all files on the backup drives after the backup or at any later time (IntegrityChecker).
Don’t be put off by what you see below: read the simple version that works for most systems (one drive to one clone at a time).