International Business Machines Corporation

David Lynn Merbach

Duane Mark Baldwin

Allen Robert Heitman

William Roy Yonker

Sumant Padbidri

Gary Thomas Axberg

Gregory John Knight

Prasenjit Sarkar

Gregory John Tevis

Sunil Bharadwaj

Kevin Joseph Webster

Li Zhou

Robert Beverley Basham

Stephen A Byrd

Zhengwen He

Sunil K Nagarajrao

Raymond M Li

Ramani Ranjan Routray

Soumitra Sarkar

Sandeep Gopisetty

Glen Hattrup

Lisa Anne Huston

Craig Anthony Laverone

Hans Hanhsia Lin

Ashmi Ashokkumar Chokshi

Mark Edward Molander

James P Allen

Karen Ruth Kluttz

Daniel Graham Douglas

Robert G Kovacs

Michael L Lamb

Raymond M Swank

Igor Chirashnya

David W Groves

Douglas Paul Dunham

Deanna M Shaw

Paul Lawrence Bradshaw

Nancy Lott Hobbs

Sharad Mishra

Duane Neale Barret

James Horan Carey

Kirill Shoikhet

Vinh-Thuan Nguyen-Phuc

Vincent Jomartin Hoang

Robert Bruce Nicholson

Zhao Lu

Greg Knight

Darren Kelly Upton

Roman David Druker

Barbara J Camacho

Sean P Cudmore

Alireza Razzaghi Daryan

Ted Frank Slupesky

Irfan Asif Habib

William Allen Medlyn

William Tuminaro

Ron H Clark

Amir Nakhforoush

Farhan Ahmad

Daryl Edward Mowrer

Uma Devi Immaneni

Stephen Byrd

For automatic updates to fabric alert definitions, a method monitors fabric alert definitions defined for a storage area network having a plurality of switches and a plurality of fabrics. The fabric alert definitions define alert conditions within the storage area network relevant to events occurring within one or more of the plurality of fabrics. The method further detects one or more changes to the plurality of fabrics by discovering relationships between each fabric and each switch within the storage area network and comparing current relationships against previous relationships. In addition, the method automatically modifies fabric alert definitions having a reference to changed fabrics responsive to detection of the one or more changes to the plurality of fabrics.

Automatic updates to fabric alert definitions

A system, method and computer program product for intelligent discovery of network information from multiple information gathering agents adapted to discover information concerning the network. The discovery agents each have an associated discovery capability. Based on consideration of the agent discovery capabilities, discovery assignments are computed and network discovery is performed according to the assignments so as to reduce discovery poll overhead.

Intelligent discovery of network information from multiple information gathering agents

A mechanism is provided in a storage management application that automatically reconfigures agents and scheduled probes of agents in cases where the agents do not automatically reconfigure themselves to manage a newly formed fabric after fragment segmentation. The solution does not burden the storage administrator to reconfigure agents or to reconfigure regularly scheduled inventory probes through storage management applications.

Automatically adjusting scheduled inventory of switched fabrics

Policies are implemented in a managed systems. Virtual heterogeneous entities are organized into a system resource group (SRG) hosted on a virtual volume that is accessed via a virtualization machine. Each of the virtual heterogeneous entities are visible to an application operable on the managed systems environment. The system resource group is subject to at least one membership requirement, defines a relationship between at least two of the virtual heterogeneous entities, contains at least one policy defining an operation as to be performed on the system resource group for a domain of the managed systems environment, and defines at least a portion of a policy framework between the system resource group and an additional system resource group organized from additional virtual heterogeneous entities. The system resource group expands according to an action performed incorporating the relationship, policy, or policy framework.

Organization of virtual heterogeneous entities into system resource groups for defining policy management framework in a managed systems environment

Techniques for identifying and selecting equivalent sets of agents with defined capabilities to perform certain actions are disclosed herein. In one embodiment, determining agents to gather information for a storage area network fabric may be performed through the use of fabric discovery operations which identify agents capable of performing various actions within the fabric. From the determined capabilities of the agents, a dynamic capability grid may be populated to assist with the generation of a list of equivalent subsets to perform the various actions. The most efficient set of agents from each equivalent subset may then be selected to perform actions, with other sets of agents in the equivalent subset available as secondary choices in case of an unexpected failure. For example, a fabric probe may be executed in a storage area network using discovered agents from a list of equivalent subsets to most efficiently accomplish network operations such as zoning and topology.

Method of determining equivalent subsets of agents to gather information for a fabric

The present disclosure provides techniques for updating fabric alert definitions defined for a fiber channel or other fabric-based network within a storage management system. One embodiment provides techniques for detecting fabric merges, fabric segmentations, and principal switch changes of the fabric and modifying fabric alert definitions as a result of these changes. Thus, any alert definitions scoped by fabric will remain relevant even after fabric structural changes, and duplicate and/or redundant alerts may be reduced within the storage management system. In a further embodiment, detection of fabric changes is performed by first storing relationships between fabrics and switches, and comparing the current relationships between the fabrics and the switches against the stored relationships. Upon recognition of changes within the fabrics, the fabric alert definitions may be automatically analyzed and updated.

Automatic updates to fabric alert definitions for fabric segmentation, fabric merge, and fabric principal switch changes

Novel storage area networks (SANs) and methods of operation thereof utilize a plurality of hosts coupled via an interconnect with one or more storage units. A manager device, process or other functionality in communication with a plurality of agent processes, devices or other functionality, each of which is associated with a host. The agents identify attributes of (i) their associated hosts, (ii) interconnect to which that host is coupled, and/or (iii) storage units to which that host is coupled via the interconnect. The manager responds to these attributes identified by the agents to manage the SAN. The manager can be implemented on a first digital data processor and the hosts on further digital data processors. These digital data processors can be coupled via a first network, e.g., an IP or other network, to support communications between the manager and the agents. A second network, e.g., SCSI and/or fiber channel based fabric, separate from the first network, can be utilized as the interconnect between the hosts and the storage devices.

Storage area network methods and apparatus with centralized management

A method, system, and computer program product for implementing policies in a managed systems environment is provided. A plurality of the heterogeneous entities is organized into a system resource group (SRG). Each of the plurality of heterogeneous entities is visible to an application operable on the managed systems environment. The system resource group is subject to at least one membership requirement, defines a relationship between at least two of the heterogeneous entities, contains at least one policy defining an operation as to be performed on the system resource group for a domain of the managed systems environment, and defines at least a portion of a policy framework between the system resource group and an additional system resource group organized from an additional plurality of the heterogeneous entities. The system resource group expands according to an action performed incorporating the relationship, policy, or policy framework.

Organization of heterogeneous entities into system resource groups for defining policy management framework in managed systems environment

A storage area network (SAN) of the type has a plurality of components including one or more digital data processors in communication with one or more storage devices via a switching fabric. An interface process, e.g., resident on a manager digital data processor, permits the operator/administrator to effect execution of at least a process residing on the manager and at least one process, such as a management application, residing on another SAN component.

Methods and apparatus for launching device specific applications on storage area network components

The invention provides improvements on a digital data processing system of the type having a first set of hosts, storage devices or other components coupled for communication with a first network manager. A second set of components is likewise coupled to a second network manager. Communications between the network managers and their respective sets of components utilize different protocols, the first network manager referring to components of the first set with identifiers that are unique to those respective components under the first protocol, and the second network manager referring to components of the second set with identifiers that are unique to those respective components under the second protocol.

Apparatus for management of mixed protocol storage networks

An apparatus, system, and method are provided for configuring a network feature for a network fabric. The apparatus includes an input module, a discovery module, a selection module and an assignment module. The input module receives a network feature configuration for a network fabric. The discovery module determines the network feature capabilities of each of a plurality of agents coupled to the network fabric. The selection module selects a preferred agent from the plurality of agents. The assignment module assigns the preferred agent to apply the network feature configuration to the network fabric through a management interface coupling the preferred agent to the network fabric.

Apparatus, system, and method for configuring zone control of a network feature in a heterogeneous network

An apparatus, system, and method are disclosed for detecting entity changes in a storage area network. A discovery module probes a plurality of entities of the storage area network to detect an event in response to a policy, stores attributes of the probed entities, and reports the event with a probe event reference. A monitor module receives a self-announced event reference of the event if an entity communicates the event. A configuration module records the event as an initiated event reference if the event is initiated by an administrator. An event manager synthesizes a report of the event from the event references.

Detecting entity changes in a storage area network environment

Growing community of inventors

Rochester, MN, United States of America

David Lynn Merbach