Patent attributes
Providing automated targetless snapshots for storage volumes includes estimating storage space needed for a new set of the snapshots based on an amount of expected change of data on the storage volumes, deleting current snapshots to free up an amount of space corresponding to estimated storage space for the new set of the snapshots, and creating the new set of the snapshots. The current snapshots may be selected for deletion based on creation date of the snapshots. Snapshots with an oldest creation data may be deleted. The storage volumes may be provided on a storage system. The storage system may show storage space used by the snapshots as unallocated. Storage space used by the snapshots may be managed by a storage resource pool. The storage resource pool may convert storage space shown as unallocated into allocated storage space in response to snapshots provided therein being converted into accessible snapshots.
