Edward G Morse

US Patent:

54653827, Nov 7, 1995

Filed:

Jul 15, 1994

Appl. No.:

8/275934

Inventors:

Kennith F. Day - Tucson AZ
William D. Lamear - Tucson AZ
Edward R. Morse - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1202

US Classification:

395404

Abstract:

A computer installation is programmed for storing data in a magnetic disk DASD (direct access storage device) in the form of a track number identified by DASD cylinder number (CC) and DASD head number (HH). A re-writable, multi-disk optical storage which stores information in a fixed-block architecture including a sequence of sectors having the form of spirals on optical disk surfaces is enabled to emulate magnetic DASD by calculation-based conversion of storage references to magnetic DASD tracks to fixed-block optical sectors.

US Patent:

55308198, Jun 25, 1996

Filed:

Jun 7, 1995

Appl. No.:

8/479291

Inventors:

Kennith F. Day - Tucson AZ
William D. LaMear - Tucson AZ
Edward R. Morse - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1202

US Classification:

395404

Abstract:

A computer installation is programmed for storing data in a magnetic disk DASD (direct access storage device) in the form of a track number identified by DASD cylinder number (CC) and DASD head number (HH). A re-writable, multi-disk optical storage which stores information in a fixed-block architecture including a sequence of sectors having the form of spirals on optical disk surfaces is enabled to emulate magnetic DASD by calculation-based conversion of storage references to magnetic DASD tracks to fixed-block optical sectors.

US Patent:

55663486, Oct 15, 1996

Filed:

Oct 22, 1995

Appl. No.:

7/965113

Inventors:

Kirby G. Dahman - Tucson AZ
Kenneth F. Day III - Tucson AZ
Alfredo M. Diaz - Tucson AZ
Edward R. Morse II - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1208

US Classification:

395838

Abstract:

A method for managing Data Storage Medium (DSM) mount and demount decisions in an automated data storage library that dynamically optimizes both sequential and random data access workloads. The demount decisions adapt to time-varying characteristics in the relative workload mix. When the workload is primarily sequential, the mount and demount decision procedure favors longer mount residency for sequential access streams, reducing the robotic picker activity and reducing response time for mount requests. When the workload is predominantly random access, sequentially accessed DSM residency time is generally reduced and preemptive demounts are more readily implemented. The disclosed method provides for preemptive demounts and uses a two-element decision process to select either a Least Recently Used (LRU) or a Least Recently Mounted (LRM) decision parameter. The relative weights of the LRU and LRM decision tests are varied responsive to measured changes in data access workload characteristics.

US Patent:

54503841, Sep 12, 1995

Filed:

Nov 12, 1993

Appl. No.:

8/151239

Inventors:

Kirby G. Dahman - Tucson AZ
Kenneth F. Day - Tucson AZ
Alfredo M. Diaz - Tucson AZ
William D. LaMear - Tucson AZ
Edward R. Morse - Boulder CO

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B 1722

US Classification:

369 30

Abstract:

Fast formatting of DASD emulating sectors on optical media is provided to reduce initialization time. Rather than format each track media when a new surface of an optical media is mounted in an optical storage library, a table is created on the media containing a set of entries for each track on the media surface. During initialization, a first table entry for each track is set to indicate that the state of the track is reliably KNOWN and a second entry is set to indicate that the track is virgin (unrecorded). Prior to a subsequent data access operation, the track table is copied from the media into a corresponding table in memory and each first entry in the media table is changed to indicate an UNKNOWN state. The memory track table is updated during the data access operations to reflect newly recorded or updated sectors. Upon completion of the data access, the media table is overwritten with the updated memory table.

Address:

6817 Bienville St, Las Vegas, NV 89131

VIN:

1A4GJ45R57B135123

Make:

CHRYSLER

Model:

TOWN AND COUNTRY

Year:

2007