Safe to delete older differential backups?
My external disc drive I use for backup is gradually filling up, it has 2.5 Tb in full+differential backups made for the last 5+ months. Is it safe to delete any of the earlier differential backups since the first full backup on which they are based, to free up space on the external drive? That is, will I be able to restore all my files using the first full backup plus one of the more recent backups?
Note, I am backing up using file backup because I have data files on several different internal hard drives in my computer that I back up and I wasn't able to use other kinds of backup specifying several different disks.
Comments
A Differential Backup is always directly related to its originating Full Backup. It will back up all data added and changed since the Full backup was done. If one of the differential backup image files be damaged or deleted, it will not affect others. But, you need to keep the latest Full backup.
When restore, you only need to select the differential backup to restore. It will restore to the status when you create the differential backup.
In addition, we suggest that you can set the differential backup scheme to delete old backup files automatically. As for backup scheme, please refer to here: https://www.ubackup.com/help/backup-scheme.html