You wish to change the default content purging options for LiveUpdate Administrator 2.x (LUA 2.x), and need to understand the settings related to content purging.
LUA purge settings can be configured for the Manage Updates folder and the Distribution Centers (DCs). The Manage Updates folder contains the local repository of all downloaded content on the LUA server. This is the folder used to house updates which are then distributed to the Distribution Centers to which LUA is configured to provide content.
The current version of LUA is configured to purge the Manage Updates folder daily, keeping 3 revisions of content by default, and to purge the Distribution Centers daily.
Configuring purge settings for the Manage Updates folder
LUA can be configured to purge its local content repository based on the number of revisions you wish to keep, or the age of the files you wish to keep. Some content is released as frequently as 3 times a day, so configuring the content based on the age of the content can result in the LUA server keeping many more revisions than expected.
Configuring purge settings for the Distribution Centers
The purge rules configured for the Manage Updates folder do no affect the behavior of the Distribution Center purge routine. LUA will purge all but the latest content revision distributed.
Additional information can be found in the Connect article Managing LiveUpdate Administrator 2.x Space Usage.