James Andrew Ignatuk

US Patent:

7949893, May 24, 2011

Filed:

Apr 30, 2008

Appl. No.:

12/112484

Inventors:

Anton William Knaus - Bethel Park PA, US
James Andrew Ignatuk - Cranberry Township PA, US

Assignee:

NetApp, Inc. - Sunnyvale CA

International Classification:

G06F 11/00

US Classification:

714 4

Abstract:

A virtual user interface allows a collection or cluster of data storage devices (nodes of the cluster) to be managed remotely by providing access to cluster management software running on one or more nodes of the cluster. Moreover, the virtual user interface fails-over, such that, if a node hosting an instance of the virtual user interface is unable to continue hosting (e. g. , communication becomes unreliable, hardware failure, etc. ), the hosting duties are substantially automatically migrated to another node in the cluster. Further, failover rules are substantially automatically organized at an initiation of the cluster, and adjusted in accordance with ongoing events occurring in the cluster to provide an administrator with substantially seamless cluster management capabilities.

US Patent:

8090832, Jan 3, 2012

Filed:

Apr 30, 2008

Appl. No.:

12/112542

Inventors:

Jeffrey Eric Semke - Cranberry Township PA, US
Daniel Clash - Pittsburgh PA, US
Tom Hicks - Cranberry Township PA, US
James Ignatuk - Cranberry Township PA, US
Daniel S. Nydick - Wexford PA, US
Andrew G. Reynolds - Mars PA, US

Assignee:

NetApp, Inc. - Sunnyvale CA

International Classification:

G06F 15/173
G06F 15/16

US Classification:

709226, 709213, 709214

Abstract:

A system and method for offloading network processes from main processors of a storage system and performing them on parallel processing modules. Embodiments of the present invention allocate resources such as memory and/or buffers to particular connections between various storage operating system processes or between storage operating system processes and a network interface. Connections are identified by a connection identifier (CID) and are assigned particular buffers according to parameters such as buffer availability, connection priority, and/or maximum allocation thresholds. A connection associated with a CID is guaranteed access to a certain number of dedicated buffers. Deadlock is avoided even when an operating system process associated with a different CID attempts to exhaust available memory and/or buffers because such processes will only have access to their own allocated resources.

US Patent:

7818408, Oct 19, 2010

Filed:

Apr 24, 2008

Appl. No.:

12/109138

Inventors:

James Andrew Ignatuk - Cranberry Township PA, US
David Phillip Kutz - Greensburg PA, US

Assignee:

Network Appliance, Inc. - Sunnyvale CA

International Classification:

G06F 15/177

US Classification:

709221, 709220, 370252, 370254, 714 4, 714 13

Abstract:

Virtual interfaces on a cluster of servers in a mass data storage system are automatically reconfigured by transferring an internet protocol (IP) address hosting responsibility from one operative port to another operative port within the cluster, in response to a change in operative status of any port within the cluster.