![]() ![]() Under default settings, retention rules are applied based on the backup sets and are tied directly to them. ![]() In this case, a weekly backup will be created on the selected day of the next week.Ī daily backup is the first backup created after a day starts unless this backup falls within the definition of a monthly or weekly backup.Īn hourly backup is the first backup created after an hour starts unless this backup falls within the definition of a monthly, weekly, or daily backup. ![]() If a weekly backup is the first backup created after a month starts, this backup is considered monthly. In all other cases, the backup sets are Monthly, Daily, Weekly, and Hourly.Ī monthly backup is the first backup created after a month starts.Ī weekly backup is the first backup created on the day of the week selected in the Weekly backup option (click the gear icon, then Backup options > Weekly backup). For the Custom backup scheme, the backup sets correspond to the backup methods (Full, Differential, and Incremental). The schedule of the backup plan defines the backup scheme used to operate with a specific archive as well as various types of backup sets.Ī backup set is a group of backups to which an individual retention rule can be applied. Retention rules Relation to backup scheme and backup types If you want to learn how retention affects different backup types and backed-up data, please refer to the description of archive12 format instead. Backup type can be disregarded when working with backup sets because the backup set has no connection to the methods of storing backup contents.įor the purpose of retention calculation, only the backup sets are used. For more information, see Difference between Full, Incremental and Differential Backup.īackup sets determine the exact schedule and conditions under which the backup had been initiated. Full backups store all information present at the backup creation time differential backups store only the difference between the last full backup and the current state of data incremental backups store the difference between the current state of data and state of data from previous successful backup. It can be “full”, “differential” and “incremental”. For clarity of the article, we will define two terms: “backup type” and “backup sets”.īackup type determines the way data is stored inside the archive. ![]()
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