1. A method for deduplication in a hybrid storage environment comprising disk and redundant array identification disk (RAID) storage systems, the method comprising: determining characteristics of a first data set, wherein the first data set is identified as redundant to a second data set, the second data set stored in a first storage system; mapping the characteristics of the first data set to storage preferences, the storage preferences specifying storage system selections for storing data sets based upon attributes of the respective storage systems; and storing, as a persistent data set, one of the first data set and the second data set in one of the storage systems identified from the mapping; wherein a storage system specified for storing the persistent data set is determined to embody a preferred disk technology based upon results of the mapping.