Patent ID: 8380891
Filing Date: 2013-02-19
Classification: G06F

Abstract:
1. A method for migrating data of a data storage system comprising data storage having higher speed and comprising other data storage, the method comprising the steps of: monitoring I/O activity of at least one group of data over a string of multiple intervals of time, indicating only a first said I/O activity occurring in each said interval of time, ignoring said I/O activity exceeding said one indicated I/O activity in each said interval of time, wherein the time for each of said multiple intervals is selected such that bursts of said I/O activity are likely to be contained in one interval; identifying at least one group of said data having had said indicated I/O activity in each of a plurality of intervals of time, occurring over a string of multiple intervals of time, said I/O activity with respect to the data storage from which data is to be migrated; and classifying said identified at least one group of data to said higher speed data storage.