1. A method for storing data in a tiered storage system, the tiered storage system comprising a plurality of storage media, one or more first storage media being designated for use in storing one or more primary copies of production data and one or more second storage media being designated for use in storing one or more auxiliary copies of production data, the method comprising: copying the production data from a data source to a first location to produce intermediate data; copying the intermediate data to a first storage medium to produce a primary copy of the production data; and while the primary copy is still being produced, copying the intermediate data to a second storage medium to produce an auxiliary copy of the production data.