Thick and thin data volume management

A storage system, comprising:

• one or more storage devices;
• and
• a processor arranged:
• to configure the one or more storage devices as a plurality of physical storage units,
• to configure multiple storage pools, each of the multiple storage pools having one or more respective pool attributes,
• to define a grouped pool comprising the multiple storage pools, and
• upon receiving a request to create a data volume having one or more volume attributes and comprising a requested number of the physical storage units:
• to identify a given storage pool in response to a comparison between the one or more pool attributes thereof and the one or more volume attributes thereof,
• to detect an available number of the physical storage units in the given storage pool, and
• upon determining that the requested number of the physical storage units is greater than the available number of the physical storage units:
• to compute a number comprising the available number of the physical storage units subtracted from the requested number of the physical storage units, and
• to transfer, within the grouped pool, the computed number of the physical storage units to the identified storage pool.

A computer program product, the computer program product comprising:

• a non-transitory computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising:
• computer readable program code arranged to configure one or more storage devices as a plurality of physical storage units;
• computer readable program code arranged to configure multiple storage pools, each of the multiple storage pools having one or more respective pool attributes;
• computer readable program code configured to define a grouped pool comprising the multiple storage pools;
• and
• upon receiving a request to create a data volume having one or more volume attributes and comprising a requested number of the physical storage units:
• computer readable program code configured to identify a given storage pool in response to a comparison between the one or more pool attributes thereof and the one or more volume attributes thereof;
• computer readable program code configured to detect an available number of the physical storage units in the given storage pool;
• and
• upon determining that the requested number of the physical storage units is greater than the available number of the physical storage units:
• computer readable program code configured to compute a number comprising the available number of the physical storage units subtracted from the requested number of the physical storage units;
• and
• computer readable program code configured to transfer, within the grouped pool, the computed number of the physical storage units to the identified storage pool.