Daniel William Sherman

US Patent:

8619574, Dec 31, 2013

Filed:

Oct 11, 2010

Appl. No.:

12/902112

Inventors:

Dung N. Dang - Seattle WA, US
Steven E. Klein - Tucson AZ, US
Daniel W. Sherman - Los Angeles CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G01R 31/08

US Classification:

370235, 370401, 370414, 370415, 701 1, 701 2, 701 4

Abstract:

A fabric login (FLOGI) in a Fibre Channel (FC) adapter is throttled by a system. The system includes a first tracking mechanism, a second tracking mechanism, a switch, and an FC adapter. The FC adapter comprises three or more FLOGIs and a controller.

US Patent:

20120110222, May 3, 2012

Filed:

Oct 28, 2010

Appl. No.:

12/914024

Inventors:

Dung N. Dang - Seattle WA, US
Matthew J. Kalos - Tucson AZ, US
Steven E. Klein - Tucson AZ, US
Daniel W. Sherman - Los Angeles CA, US

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - Armonk NY

International Classification:

G06F 5/14

US Classification:

710 52

Abstract:

A method for dynamically enabling and disabling use of XFR_RDY is disclosed herein. In one embodiment of the invention, such a method includes receiving a write command at a target and determining whether XFR_RDY is enabled or disabled for the write command. In the event XFR_RDY is disabled, the method determines whether one or more buffers are available at the target. If at least one buffer is available, the method processes the write command by writing data associated with the write command to the one or more buffers. The method then returns information indicating the number of buffers that are still available at the target after completing the write command. A corresponding apparatus and computer program product are also disclosed and claimed herein.

US Patent:

20120236721, Sep 20, 2012

Filed:

May 25, 2012

Appl. No.:

13/481209

Inventors:

Dung N. DANG - Seattle WA, US
Steven E. KLEIN - Tucson AZ, US
Daniel W. SHERMAN - Los Angeles CA, US

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - Armonk NY

International Classification:

H04L 12/24

US Classification:

370235

Abstract:

A fabric login (FLOGI) in a Fibre Channel (FC) adapter is throttled. The system includes a first tracking mechanism, a second tracking mechanism, a switch, and an FC adapter. The FC adapter comprises three or more FLOGIs and a controller. First and second FLOGI requests are transmitted to the switch and indicate, via a first tracking mechanism, that a first FLOGI associated with the first FLOGI request and a second FLOGI associated with the second FLOGI request are active. A third FLOGI request is queued until the first FLOGI request or the second FLOGI request is processed by the switch and indicates, via a second tracking mechanism, that a third FLOGI associated with a third FLOGI request is queued.