differential backup

A differential backup is a method of data protection that saves only the changes made since the last full backup. For example, if you back up all your data on a Sunday, a differential backup on Tuesday would capture everything that has changed since Sunday. This approach allows for quicker recovery compared to full backups, as only two backups (the last full backup and the most recent differential backup) are needed to restore data. It balances efficiency and storage needs, making it easier to manage data security over time.