Storage unit selection for virtualized storage units

A method comprising:

• determining performance information for each storage unit of a plurality of storage units located at a virtual data center, wherein the determining is performed by executing storage administrator logic whose execution is controlled by a management entity different than a virtual data center provider;
• based on the determined performance information, determining that a performance pattern indicating a physical co-location of a first storage unit and a second storage unit has occurred;
• in response to determining that the performance pattern has occurred, disabling use of a selected storage unit of the first storage unit or the second storage unit for at least a particular purpose;
• wherein the method is performed by one or more devices.

A non-transitory computer-readable storage medium comprising one or more sequences of instructions which when executed by one or more processors cause the one or more processors to perform:

• determining performance information for each storage unit of a plurality of storage units located at a virtual data center, wherein the determining is performed by executing storage administrator logic whose execution is controlled by a management entity different than the virtual data center provider;
• determining, automatically based on the determined performance information, performance expectations;
• determining particular performance expectations applicable to a particular storage unit;
• determining that performance of the particular storage unit is incompatible with the particular performance expectations;
• causing, at least partially in response to determining that performance of the storage unit is incompatible with the performance expectations, a reduction in utilization of the particular storage unit.