Simple definition
A backup that only copies the data modified since the last relevant backup point.
Technical definition
Incremental backup reduces the volume transferred by relying on a previous point and a chain of changes.
What is it used for ?
Reduce the time and amount of data to be transferred daily.
Practical example
After a full backup on Sunday, only Monday changes can be copied Monday night.
Common issues
- Damaged backup chain
- Multi-point restoration
- Underestimated change rate
Related terms
Key takeaway: This entry explains the general operation of the term. Exact settings may vary depending on software, vendors and environments.