Patent ID: 9298373
Filing Date: 2016-03-29
CPC Classification: G06F

Claim Text:
1. A method, comprising: configuring, by a storage controller, a plurality of storage tiers; pinning, by a first application, a storage unit including a sub-unit of the storage unit, to a selected storage tier of the plurality of storage tiers, for at least a predetermined duration of time subsequent to an input/output (I/O) request for the sub-unit, wherein the pinning restricts the sub-unit from being moved from the selected storage tier to another storage tier of the plurality of storage tiers; in response to expiry of the predetermined duration of time, releasing, by the first application, the pinning of the sub-unit to the selected storage tier, to make the sub-unit eligible for movement to other storage tiers of the plurality of storage tiers; and in response to the releasing by the first application of the pinning of the sub-unit to the selected storage tier, taking control, by a second application, of management of the sub-unit, wherein the second application moves the sub-unit to an appropriate storage tier of the plurality of storage tiers or continues to maintain the sub-unit in the selected tier.