TopicBackup & PRA →
Simple definition
A strategy where an initial full is followed mainly by incremental backups.
Technical definition
The software keeps or transforms the chain in order to avoid regularly re-doing an active full.
What is it used for ?
Reduce the amount of data read and transferred to each backup.
Practical example
After the first full, only daily changes are sent.
Common issues
- Long chain
- Dependence on the person
- Maintenance of the synthetic full required
Related terms
Key takeaway: Exact behavior and commands may vary depending on versions, products and architectures.