TSM Management Class Values Explained

TSM Management Class Values Explained

The following criteria can be applied in order to satisfy individual backup requirements. Extra charges may be applied to cover cost for any additional media purchases.

Versions data exists(University default value is 5 copies)

The Versions Data Exists attribute specifies the maximum number of different backup versions retained for files and directories currently on your drive. If you select a management class that permits more than one backup version, the most recent version is called the active version. All other versions are called inactive versions. If the maximum number of versions permitted is five, and you run a backup that creates a sixth version, the oldest version is deleted from server storage.

Retain extra versions (University default value is 30 Days)

The Retain Extra Versions attribute specifies how many days all but the most recent backup version is retained. The most recent version is the active version, and active versions are never erased. If Nolimit is specified, then extra versions are kept until the number of backup versions exceeds the versions data exists or versions data deleted parameter settings. In this case, the oldest extra version is deleted immediately.

Versions data deleted (University default value is 1 copy)

The Versions Data Deleted attribute specifies the maximum number of different backup versions retained for files and directories that you erased from your drive. This parameter is ignored as long as the file or directory remains on your drive. If you erase the file or directory, the next time you run an incremental backup, the active backup version is changed to inactive and the oldest versions are erased that exceed the number specified by this parameter. The expiration date for the remaining versions is based on the retain extra versions and retain only version parameters.

Retain only version (University default value is 60 Days)

The Retain Only Version attribute specifies the number of days the last remaining inactive version of a file or directory is retained. If Nolimit is specified, the last version is retained indefinitely. This parameter goes into effect during the next incremental backup after a file is deleted from the client machine. Any subsequent updates to this parameter will not affect files that are already inactive. For example: If this parameter is set to 10 days when a file is inactivated during an incremental backup, the file will be expired in 10 days.