George E Rudeseal

7000088, Feb 14, 2006

Dec 27, 2002

10/330838

George A. Rudeseal - Boulder CO, US
Robert F. Walsh - Boulder CO, US
Stephen S. Selkirk - Westminister CO, US

Storage Technology Corporation - Louisville CO

G06F 12/00

711173, 711 4, 711112, 711114, 711158, 711202, 711203, 710 5, 710 36, 710 74, 710244

A direct access storage system includes at least one disk and a controller. The at least one disk physically may be partitioned into at least one first access performance partition and at least one other access performance partition. The controller may be configured to process I/O accesses to the first access performance partition without regulation and regulate I/O accesses to the at least one other access performance partition.

7185168, Feb 27, 2007

Dec 2, 2005

11/293452

George A. Rudeseal - Boulder CO, US
Robert F. Walsh - Boulder CO, US
Stephen S. Selkirk - Westminister CO, US

Storage Technology Corporation - Louisville CO

G06F 12/00

711173, 711 4, 711112, 711114, 711158, 711202, 711203, 710 5, 710 36, 710 74, 710244

A direct access storage system includes at least one disk and a controller. The at least one disk physically may be partitioned into at least one first access performance partition and at least one other access performance partition. The controller may be configured to process I/O accesses to the first access performance partition without regulation and regulate I/O accesses to the at least one other access performance partition.

54308550, Jul 4, 1995

Aug 31, 1994

8/299247

Robert Walsh - Boulder CO
George A. Rudeseal - Boulder CO
Jay S. Belsan - Nederland CO

Storage Technology Corporation - Louisville CO

G06F 300

395275

The data storage subsystem is implemented using an array of data storage elements which vary in data storage characteristics and/or data storage capacity. Control apparatus automatically compensates for any nonuniformity among the data storage elements by selecting a set of physical characteristics that define a common data storage element format. The selected set of physical characteristics may not match any of the disk drives but each disk drive can emulate these selected characteristics. This capability enables the disk drives in the data storage subsystem to be replaced by nonidentical disk drives in a nondisruptive manner to provide continuous data availability.

51558459, Oct 13, 1992

Jun 15, 1990

7/538911

David G. Beal - Longmont CO
Fred C. Eifert - Louisville CO
Henry S. Ludlam - Longmont CO
Charles A. Milligan - Golden CO
George A. Rudeseal - Boulder CO
Paul R. Swiatek - Lafayette CO

Storage Technology Corporation - Louisville CO

G06F 1120
G06F 1300

395575

A disk storage system that writes multiple copies of records directed to user-specified volumes. A plurality of spaced apart control units interconnected by direct data links and a corresponding plurality of sets of recording means communicate over the direct data links when a write request is received by one control unit to cause one volume in each set of recording means to write a copy of the received record.

51249871, Jun 23, 1992

Apr 16, 1990

7/509484

Charles A. Milligan - Golden CO
George A. Rudeseal - Boulder CO

Storage Technology Corporation - Louisville CO

G06F 1100

371 101

The parallel disk drive array data storage subsystem maps between virtual and physical data storage devices and schedules the writing of data to these devices. The data storage subsytem functions as a conventional large form factor disk drive memory, using an array of redundancy groups, each containing N+M disk drives. A performance improvement is obtained by eliminating redundancy data updates in the redundancy group by writing modified virtual track instances into previously emptied logical tracks and marking the data contained in the previous virtual track instance location as invalid. Logical cylinders containing a mixture of valid and invalid virtual tracks are emptied by writing all the valid virtual tracks into a previously emptied logical cylinder as a background process.

54106672, Apr 25, 1995

Apr 17, 1992

7/870573

Jay S. Belsan - Nederland CO
Charles A. Milligan - Golden CO
John T. O'Brien - Louisville CO
George A. Rudeseal - Boulder CO

Storage Technology Corporation - Louisville CO

G06F 1200

395425

The disk drive array data storage subsystem maps between virtual and physical data storage devices and schedules the writing of data to these devices. The data storage subsystem functions as a conventional large form factor disk drive memory, using an array of redundancy groups, each containing N+M disk drives. This system copies data records by simply creating a duplicate data record pointer in a virtual track directory to reference the original data record. This enables the host processor to access the data record via two virtual addresses while only a single physical copy of the data record resides in the data storage subsystem.

56320124, May 20, 1997

Mar 6, 1996

8/611501

Jay S. Belsan - Nederland CO
Alan R. Permut - Louisville CO
George A. Rudeseal - Boulder CO

Storage Technology Corporation - Louisville CO

G06F 1110

39518204

One or more background processes that references data storage volumes and cylinders that are to be scrubbed to ensure the integrity of the data stored thereon. A priority scrubbing process is also available to note data storage volumes that have recently had data written thereon by the host processor and which require a more timely review of the data than less frequently used volumes.

52108660, May 11, 1993

Sep 12, 1990

7/582260

Charles A. Milligan - Golden CO
George A. Rudeseal - Boulder CO
Jay S. Belsan - Nederland CO

Storage Technology Corporation - Louisville CO

G06F 1120

395575

The parallel disk drive array data storage subsystem dynamically maps between virtual and physical data storage devices and schedules the writing of data to these devices. The data storage subsystem functions as a conventional large form factor disk drive memory, using an array of redundancy groups, each containing N+M disk drives. The data storage subsystem does not modify data stored in a redundancy group but simply writes the modified data as a new record in available memory space on another redundancy group. The original data is flagged as obsolete. A mapping table is maintained to identify portions of these redundancy groups which contain newly written or modified virtual track instances. These marked virtual track instances are written to backup medium as a background process and the mapping table is updated to clear the flags that identify these virtual track instances as having been modified.