1
Gregory Kenley, George Ericson, Richard Fortier, Chuck Holland, Robert Mastors, James Pownell, Tracy Taylor, John Wallace, Neil Webber: Digital data storage system with improved data migration. Epoch Systems, Lahive & Cockfield, January 4, 1994: US05276867 (921 worldwide citation)

A digital data storage apparatus has primary, secondary and backing storage elements characterized by respectively longer access times. A level detector signals when the quantity of data in the secondary store exceeds a threshold amount. A data migrator responds by moving selected data files from th ...


2

3

4

5