A dataset is divided into pieces and stored at multiple locations and the system dynamically increases or decreases the number of storage locations where the pieces of the data set may be stored. A data structure comprises a first data field including a first index and a first element, and one or more data fields each with an index and an element. The elements of the one or more data fields include a token representing a location associated with the index of the first data field. A data row of a data set is mapped to the index of a data field using a second index. The second index is derived from a data row of the data set using a hash function. The second index is then mapped to the index of a data field included in the one or more data fields using a modulus function.