Abstract: In one example, a method for managing data includes defining a policy concerning migration of a dataset, and the policy specifies a condition that the dataset is to be migrated from a first storage entity to a second storage entity after the passage of a length of time during which the dataset was not accessed. The policy is then associated with the dataset. Next, a determination is made as to whether the condition of the policy has been met, and when the condition of the policy has been met, the dataset is automatically migrated from the first storage entity to the second storage entity.

Abstract: A virtual tape emulator (VTE) that performs data integrity read back verification at host sync points. The VTE first flushes data that it may have buffered to a backend storage subsystem such as a disk array. The VTE then reads all data that was written to the backend storage array between a prior sync point and the current sync point. During this feedback verification, integrity checks can be performed. An error detected during read back verification is returned to the host operation that triggered the sync operation.