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Data reduction savings displayed at the Storage Group level represents only compression savings. This information can be viewed with the Storage Group list, the detailed view and the Storage Group Demand report. The ratio displayed shows the compression savings for data specific to the storage group being viewed. In addition to the compression ratio the amount of unreducible data is shown. The amount of unreducible data shown represents the amount of data the Storage group has allocated that the system has determined is not reducible. See the examples in the following figures.