Patent ID: 8775728

Claim:
A computer program product, the computer program product comprising a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code being readable and/or executable by a processor to: receive a request to allocate a target data set on a first storage; determine a size of a source data set on a second storage, wherein data from the source data set will be copied to the target data set; compare the determined size of the source data set to a break point value to determine if the target data set is to be stored to track-managed storage or cylinder-managed storage of the first storage, wherein the break point value indicates an amount of storage space; receive the data from the source data set; and store the data from the source data set to the target data set in either track-managed storage or cylinder-managed storage of the first storage based on the comparison, wherein the target data set is stored to cylinder-managed storage of the first storage when the determined size of the source data set on the second storage is at least as great as the break point value.