Patent ID: 8307014

Claim:
A method for rebalancing database table space in a hybrid storage environment comprising: detecting a change in storage characteristics of a first user in a hybrid storage environment comprising a set of standard performance storage units and a set of high performance storage units; in response to said detection, mapping a first set of extents stored in the hybrid storage environment that are associated with the first user, wherein said mapping comprises determining in which set of storage units each extent in the first set is stored; in response to said detection, characterizing each extent in the first set as a standard or priority extent by evaluating the storage characteristics of the first user and one or more storage rules associated with the hybrid storage environment; in response to said mapping and characterizing, evaluating whether redistribution of the first set of extents is needed, wherein if priority extents in the first set are stored in the set of standard performance storage units then a redistribution of the first set of extents is triggered; and in response to said trigger, redistributing the first set of extents among the storage units using the one or more storage rules by moving priority extents stored in the set of standard performance storage units to the set of high performance storage units.