Lsi Corporation

Lsi Logic Corporation

James A Lynn

Andrew J Spry

Kevin Lindgren

Pramodh Mereddy

Anthony D Gitchell

Brian Dennis McKean

Donald Roman Humlicek

Jeremy D Stover

Timothy R Snider

Daniel A Riedl

Scott Masterson

Timothy M Flynn

Dan A Riedl

Jason M Stuhsatz

A method is included for loading a main loadable file and at least one optional loadable file during initialization of a computer system. The method includes loading a main loadable file which includes a resident portion and an input/output network interface software component. The resident portion is a utilization software component configured to use transmission protocols. The method also includes determining which optional loadable files are required to be loaded. The optional loadable files each include an optional portion. The method also includes loading the optional loadable files which contain optional portions corresponding to required protocols.

Determining required software components for SCSI system initialization

A method and apparatus configured to allow independent threads to communicate synchronously through a block of memory accessible to at least two independent threads for bi-directional communication. The method and apparatus simplify the conversion of computer code to a multi-threaded architecture by allowing threads to effectively interact through function calls and data returns.

System and method for synchronous inter-thread communication

A first virtual device is created including every logically addressable unit of a data storage server that utilizes data protection. A second virtual device is created including no logically addressable unit of the data storage server that utilizes data protection. Data transfers are disabled within all command phases of the first virtual device.

Managing protected and unprotected data simultaneously

Methods and systems for provision of boot parameters may comprise: receiving one or more boot parameter event notification registration requests; registering one or more boot parameter event receiver clients; and providing one or more boot parameters to one or more registered boot parameter event receiver clients.

Consolidated boot parameter management systems and methods

methods and systems for monitoring data activity may include various operations, including, but not limited to: modifying a value of at least one counter in response to one or more input/output requests directed to at least one data storage region during a first time interval; storing a first cumulative value of the counter modified in response to one or more input/output requests directed to at least one data storage region during the first time interval following the expiration of the first time interval; modifying a value of at least one counter in response to one or more requests directed to the at least one data storage region during a second time interval; storing a second cumulative value of the counter modified in response to one or more requests directed to the at least one data storage region during the second time interval following the expiration of the second time interval; and computing at least one activity index for the at least one data storage region from at least the first cumulative value and the second cumulative value.

Methods and systems for tracking data activity levels

A method may include defining an interface class including a static member having an implementation pointer. The method may also include loading a main code segment including a stub implementation of the interface class. Additionally, the method may include instantiating the stub implementation of the interface class to provide a stub implementation object. The stub implementation of the interface class may include a first constructor configured to set the implementation pointer to the stub implementation object. Further, the method may include loading a dynamic library including a real implementation of the interface class. Still further, the method may include instantiating the real implementation of the interface class to provide a real implementation object. The real implementation of the interface class may include a second constructor configured to set the implementation pointer to the real implementation object.

Method for simplifying interfaces having dynamic libraries

A method of partitioning storage is provided. In an exemplary embodiment, the method includes connecting at least one initiator with at least one target device. Upon connection of the at least one initiator with the at least one target device, at least one initiator-target association object may be created. The method may also include selecting at least one storage partition with the at least one initiator-target association object.

Method of partioning storage in systems with both single and virtual target interfaces

The present invention is directed to methods for defining and naming iSCSI targets using volume access and security policy. In an exemplary aspect of the present invention, a method for defining an iSCSI target using volume access and security policy may include the following steps. One or more volumes of a network entity may be first mapped to an initiator. The mapping defines the unique Logical Unit Number for the volume to an initiator. Then, a security level may be defined for access to each volume accessed by the initiator. The subset of mappings for each initiator may be given any unique name. Next, the mapping and security subsets may be used to define the fully qualified targets with which the initiator may open a session.

Methods for defining and naming iSCSI targets using volume access and security policy

The present invention is directed to a method and apparatus for identifying IPsec security policy in iSCSI. In an exemplary aspect of the present invention, a method for identifying IPsec security policy in iSCSI includes the following steps. An IP address may be allocated to a physical port of an iSCSI network entity. The physical port may include at least one TCP listening port. For a discovery session, the IP address may be statically allocated (or permanently leased). For a normal session, the IP address may be statically allocated or DHCP assigned. A TCP listening port associated with the IP address in an iSCSI portal may then be used to link a security policy on an IP connection with iSCSI configuration.

Method and apparatus for identifying IPsec security policy in iSCSI

The present invention provides systems and methods for balancing a request load on device communication channels. A system includes a channel scanner, a processor, and a load balancer. The system may iteratively balance the request load on the communication channels. The device communication channels are typically connected between controllers and a system of devices. The channel scanner is configured for scanning the channels to determine the number or bandwidth of requests of each device. The processor may rank the devices by the number or bandwidth of requests of each device. The load balancer may allocate the requests between the channels based on the rank of the devices. For example, the load balancer may receive the rank order of the devices from the processor and allocate the requests based on the rank order. The load balancer may additionally allocate the requests based on present capabilities of the channels.

Method and apparatus for balancing a request load of communication channels

The present invention discloses a system for adjusting the speed of operation of a channel for communicating with disk drives in a multi ported system, comprising a bridge controller having a first channel and a second channel and a plurality of enclosure services modules, each having a first channel connected in sequence from a bridge controller to a first enclosure services module and successively connected to successive enclosure services modules to a last enclosure services module and each having a second channel connected in reverse sequence from the bridge controller to the last enclosure services module and successively connected to the successive enclosure services modules to the first enclosure services module. In the disclosed method for changing the speed of operation of a channel, a change speed is performed on either the first or second channel and the other of the first and second channel is used to send change speed frames from the bridge controller to each of the plurality of enclosure services modules.

Method for changing fibre channel speed of a drive loop with ESM-controlled drive boxes using redundant drive channels

A system identifies one or more devices having faults in a communication loop. The system includes an interface, a decision module, and a connection processor. The interface is configured for sending requests for information to each device of the communication loop and for receiving responses to the requests. The devices may include computer disk drives for use in a storage system. The requests may include Read-Link Status (RLS) commands sent to the computer disk drives. The RLS commands may provide diagnostics of the disk drives connected to the loop. The decision module is communicatively connected to the interface for weighting the responses of each device to identify the devices having the faults. The responses may be weighted based on the relative potential for disrupting operability of the system. The communication loop may include an FC loop that allows communications between a host system and the computer disk drives.

Method and apparatus for identifying one or more devices having faults in a communication loop

An apparatus comprising one or more enclosures and a controller. The one or more enclosures may each comprise one or more drives. The controller may be configured to map correctly correlating addresses to one or more drives. An advantageous aspect of the present invention is the ability to support general enclosure wiring when associating data with physical devices, such as associating SES data with physical devices on a fiber channel loop with soft addresses.

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Rose Hill, KS, United States of America

James A Lynn