The invention relates to a method for storage management in a data processing system having a plurality of storage devices with different performance attributes and a workload. The workload is being associated with respective sets of data blocks to be stored in said plurality of storage devices. The method comprises the steps of dynamically determining performance requirements of the workload and dynamically determining performance attributes of the storage devices. The method further comprises the step of allocating data blocks to the storage devices depending on the performance requirements of the associated workload and the performance attributes of the storage devices.