Emc IP Holding Company LLC

Sean B Reilly

Owen Martin

Anoop Raghunathan

Dustin Hunt Zentz

Vladimir Desyatov

Mark D Moreau

Techniques for performing data movements may include tracking sets of I/O statistics for a extents, wherein each of the sets of I/O statistics characterizes I/O operations directed to a corresponding one of the extents having data stored on a first storage tier of first non-volatile storage devices; determining, in accordance with the sets of I/O statistics, a list that includes one or more of the extents qualified for promotion from the first storage tier to a second storage tier, wherein the second storage tier includes second non-volatile storage devices have a higher performance ranking that the first non-volatile storage devices of the first storage tier; selecting, from the list, a first extent to be promoted from the first storage tier to the second storage tier; and performing first processing that promotes only cached data of the first extent from the first storage tier to the second storage tier.

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Sean B Reilly