Patent ID: 8041802
Filing Date: 2011-10-18
Classification: G06F

Abstract:
1. An automated method of organizing data in a database management system, the automated method comprising: logically storing data under management of the database management system in two or more logical data storage units; physically storing the data under management of the database management system in two or more physical data storage units; maintaining a mapping of logical data storage units to physical data storage units, each logical data storage unit mapped to one physical data storage unit; measuring a current input/output workload of each logical data storage unit; measuring a data input/output rate of each physical data storage unit; migrating, by a process of the database management system, data of a logical data storage unit with a higher input/output workload from a first physical data storage unit to a second physical data storage unit having a faster input/output rate than the first physical data storage unit; and updating the mapping of the logical data unit of the migrated data from the first physical data storage unit to the second physical data storage unit.