Inventor
SHIPMAN JR LLOYD R
US8 patents
Patents
8 patentsUS5636359AJun 3, 1997
Performance enhancement system and method for a hierarchical data cache using a RAID parity scheme
IBM177 citations97
US5504882AApr 2, 1996
Fault tolerant data storage subsystem employing hierarchically arranged controllers
IBM291 citations94
US5634109AMay 27, 1997
Method and system for enhanced data management efficiency in memory subsystems utilizing redundant arrays of disk memory devices and a nonvolatile cache
IBM26 citations92
US5467361ANov 14, 1995
Method and system for separate data and media maintenance within direct access storage devices
IBM23 citations91
US5432929AJul 11, 1995
Storage subsystem having a modifiable key-lock
IBM36 citations88
US5421003AMay 30, 1995
Disk storage system with fault tolerant media maintenance
IBM20 citations88
US4970640ANov 13, 1990
Device initiated partial system quiescing
IBM47 citations88
US5428802AJun 27, 1995
Method and apparatus for executing critical disk access commands
IBM15 citations66