Patent ID: 9021204
Filing Date: 2015-04-28
Classification: G06F

Abstract:
1. A method for managing data storage comprising the steps of: defining a plurality of storage tiers, wherein the plurality of storage tiers are ranked from a highest to a lowest level in a storage hierarchy; defining at least one rule for storing data in the plurality of storage tiers; determining whether performance assisted tier migration is requested; monitoring at least one attribute of each of the plurality of storage tiers when it is determined that the performance assisted tier migration is requested; determining whether to redefine at least one of the plurality of storage tiers based on the monitoring; and determining whether to migrate the data based on the monitoring; wherein if a first tier is ranked at a lower level than a second tier, and a monitored attribute of the first tier exceeds a corresponding monitored attribute of the second tier, redefining the first tier as a higher level and redefining the second tier as a lower level.