Quantifying utilization of a data storage system by a virtual storage unit

A system comprising:

• a plurality of virtual storage units, including a first virtual storage unit and a second virtual storage unit;
• a data storage system comprising a plurality of functional components, including at least one of:
• a first front-end adapter and a first physical storage unit interface;
• and
• first logic operative to:
• for the first virtual storage unit:
• determine a first front-end adapter utilization value that quantifies a utilization of the first front-end adapter by the first virtual storage unit;
• determine a first physical storage unit utilization value that quantifies a utilization of a first physical storage unit interface by the first virtual storage unit;
• and
• combine at least the first front-end adapter utilization value and the first physical storage unit interface utilization value to produce a first overall system utilization value of the first virtual storage unit;
• and
• for the second virtual storage unit;
• determine a second front-end adapter utilization value of a second front-end adapter that quantifies a utilization of the second front-end adapter by the second virtual storage unit;
• determine a second physical storage unit interface utilization value that quantifies a utilization of a second physical storage unit interface by the second virtual storage unit;
• and
• combine at least the second front-end adapter utilization value and the second physical storage unit interface utilization value to produce a second overall system utilization value of the second virtual storage unit.

A computer-readable storage device encoded with computer-executable instructions that, as a result of being executed by a computer, control the computer to perform, for a plurality of virtual storage units of a data storage system comprising a plurality of functional components, including at least one of:

• a front-end adapter and a physical storage unit interface, a method comprising:
• for a first of the plurality of virtual storage units:
• determining a first front-end adapter utilization value of a first front-end adapter that quantifies a utilization of the first front-end adapter by the first virtual storage unit;
• determining a first physical storage unit interface utilization value that quantifies a utilization of a first physical storage unit interface by the first virtual storage unit;
• and
• combining at least the first front-end adapter utilization value and the first physical storage unit interface utilization value to produce a first overall system utilization value of the first virtual storage unit;
• and
• for a second of the plurality of virtual storage units:
• determining a second front-end adapter utilization value of a second front-end adapter that quantifies a utilization of the second front-end adapter by the second virtual storage unit;
• determining a second physical storage unit interface utilization value that quantifies a utilization of a second physical storage unit interface by the second virtual storage unit;
• and
• combining at least the second front-end adapter utilization value and the second physical storage unit interface utilization value to produce a second overall system utilization value of the second virtual storage unit.