This action involves creating a copy of the data you would like to back up and storing it separately from where your data is hosted. Sometimes the data is stored in an independent folder, but located on the same disk. The backup must be stored separately from the space that your data is originally stored in. This way, your data will be protected against any incidents that could result in data loss or corruption.
Based on a full data backup, a differential backup creates a backup containing the data that has been created or modified after the full backup. Each differential backup compiles the modifications integrated into the previous backup and also includes the new changes. As a result, this requires more storage space than an incremental backup but requires less processing time if a full restore of archived files needs to be carried out.
An incremental backup is an option that might interest you if you are looking to save storage space. Incremental backup is launched on D+1 (D = day) after a full data backup is carried out. On each backup, the data that has been modified, as well as any new data, is incremented in comparison to D-1. However, a full backup requires more time to restore than a differential backup, as each backup that has been incremented must be re-copied onto the disk.