Incremental backups
Incremental backups also back up only the changed data, but they only back up the data that has changed since the last backup -- be it a full or incremental backup. They are sometimes called "differential incremental backups," while differential backups are sometimes called "cumulative incremental backups." Confused yet? Don't be.
If you do an incremental backup on Tuesday, you only back up the data that changed since the incremental backup on Monday. The result is a much smaller, faster backup. The characteristic of incremental backups is the shorter the time interval between backups, the less data to be backed up.
> Saves both time and storage space, and ensures that your backup is up to date.
Compare with full backup captures your entire system and all the data you want to protect.
Incremental backup takes less backup time and produces smaller image file. And compare with differential backup, incremental backup will save your space better.
That's the main reason why most people choose to make incremental backup.
> Full Backup captures your entire system and all the data you want to protect. Frequent full backups result in easier recovery operations.