Lsi Corporation

Avago Technologies General IP (singapore) Pte. Ltd.

Edoardo Daelli

Jeffrey K Whitt

Lawrence James Rawe

Brett Henning

Scott Dominguez

Jason McGinley

Brandon L Hunt

Matthew Freel

Sreedeepti Reddy

Sayantan Battacharya

A protocol bridge includes a cache for caching data from a plurality of data storage devices, and for servicing data requests from a plurality of initiators. Data is cached for every data access operation such that the most frequently accessed data remains replicated in the cache.

Multi-protocol bridge with integrated performance accelerating cache

A method for detecting a failure in a serial topology. The method may comprise sending a predetermined pattern to a plurality of devices communicatively connected to an initiator in a serial topology; receiving a return result from each of the plurality of devices in response to the predetermined pattern; recognizing a problem associated with a particular device among the plurality of devices, the problem being recognized based on the return result from the particular device; sending a plurality of test patterns to the particular device; receiving a plurality of test results from the particular device in response to the plurality of test patterns; and determining a cause of the problem based on the plurality of test results, the cause of the problem being at least one of: a cable failure and a device failure.

Method for detecting a failure in a SAS/SATA topology

Disclosed is a method and a SAS controller device that abstract access from one or more virtual machines operating on a host system to SAS physical devices connected to the SAS controller without a routing table for port-to-port messaging on the SAS controller. An embodiment may create a virtual expander for each physical port of the SAS controller and further create virtual ports within the virtual expanders to provide abstracted access to SAS physical devices for the virtual machines. The SAS physical devices may be replicated/cloned within the virtual ports. Each replicated/cloned SAS physical device may be assigned a unique SAS address for the SAS controller (i.e., unique for the SAS controller such that other replicates/clones on other virtual ports have a different SAS address). If a physical expander that supports zoning is connected to a SAS controller port, an embodiment may further selectively replicate/clone the SAS physical devices for a virtual port based on whether or not a SAS physical device is included in a zoning group associated with the virtual port. An embodiment may further abstract access to SAS physical devices through a virtual function that permits access to one virtual port per virtual expander in order to permit access for the virtual machine associated with the virtual function to more than one physical port of the SAS controller.

Method for selective replication of physical devices on a virtual self-configuring zoning expander

Growing community of inventors

Castle Rock, CO, United States of America

Edoardo Daelli