LSI Assigned Patent

LSI Corporation, Milpitas, CA , has been assigned a patent (8,904,108), developed by Madhusudana Naresh and Math Kiran, Bangalore, India, for “methods and structure establishing nested Redundant Array of Independent Disks volumes with an expander .”

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Methods and structure are provided for provisioning a Redundant Array of Independent Disks (RAID) volume via an expander that can be used to provision a RAID volume managed by an external RAID controller. The structure includes a Serial Attached SCSI (SAS) expander. The expander comprises physical links with transceivers (PHYs) that directly couple with storage devices, a protocol target and a control unit. The control unit provisions a first RAID volume with multiple storage devices that are directly coupled with the PHYs, and is further masks the storage devices from a SAS domain, by presenting the PHYs directly coupled with the multiple storage devices as a single PHY coupled with a single logical device. The control unit is also operable to provision a portion of a second RAID volume on the logical device in response to the expander receiving a command from a RAID controller.“

The patent application was filed on October 31, 2012 (13/665,038)