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Abstract

A method for execution by an integrity processing unit includes determining to reclaim storage capacity of a DSN memory based on utilization information. Slice age information for a plurality of sets of encoded data slices stored in the DSN memory is determined, and a plurality of sets of encoded data slices are selected based on the slice age information. All encoded data slices are identified for deletion when substantially each of the selected plurality of sets includes less than or equal to a decode threshold number of encoded data slices. A subset of encoded data slices is identified for deletion when substantially each of the selected plurality of sets includes more than the decode threshold number of encoded data slices, where removal of the subset of encoded data slices results in at least the decode threshold number of encoded data slices remaining for each selected set of encoded data slices.

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