1
Alexander H Frey Jr, Richard C Mosteller, Joel M Gould, Noah R Mendelsohn, James Perchik: Data processing method for file status recovery includes providing a log file of atomic transactions that may span both volatile and non volatile memory. International Business Machines Corporation, Perman & Green, April 6, 1993: US05201044 (234 worldwide citation)

A data processing system includes both volatile and nonvolatile memories, user-inaccessible file control software and performs a method for recovering from a malfunction occurring during a file transaction that prevents accomplished microscopic transactions from being lost. The method comprises the ...


2
Noah R Mendelsohn, James Perchik, Thomas R Hancock: Component replacement control for fault-tolerant data processing system. International Business Machines Corporation, Perman & Green, May 17, 1994: US05313628 (37 worldwide citation)

Apparatus is described for component replacement control in a data processing system, with each component being assigned a label that includes a component identifier and a replacement generation value. The apparatus includes a plurality of tables for redundantly storing replacement generation values ...