Promote

Promoting is the action of doing a full backup of a DLE when it is not due.

The goal of amanda is to balance the size of full backup at every run, that size is:

 balanced_size = size of a full of all DLEs / runspercycle

If current run size of scheduled full DLEs is lower than balanced_size, then amanda promote some DLE to a full backup in the hope to get a better balanced schedule.

You can control promotion with the per dumptype keyword maxpromoteday in amanda.conf(5).

In some cases, amanda promote the same DLE too often, to prevent this, you can set maxpromoteday to a small value.

Promoting a dump reduces the number of tapes needed to restore a given DLE. Promoting is the opposite of bumping.

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