Patents by Inventor Kartik D. Agarwal

Kartik D. Agarwal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus and methods for managing expanded capacity of virtual volumes in a storage system
    Patent number: 8261003
    Abstract: Methods and apparatus for expanded capacity virtual volumes in a virtualized storage system. A storage controller of the storage system parses a SCSI command block as it is received to generate a tag value indicating a segment of a virtual volume to which the command block is directed. The tag value is used to select one of a plurality of mapping segment objects stored in a memory of the controller. Each mapping segment objects maps logical block addresses of a corresponding segment of a corresponding virtual volume to physical storage addresses on the physical storage devices that comprise the virtual volume. An I/O processing circuit of the controller then processes the SCSI command block in accordance with the mapping information in the selected mapping segment object. In one exemplary embodiment, each segment of a virtual volume comprises 2 terabytes of storage capacity of the virtual volume.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: September 4, 2012
    Assignee: LSI Corporation
    Inventors: Howard Young, Mukul Kotwani, Srinivasa Nagaraja Rao, Kartik D. Agarwal, Gordon L. Larimer
  • APPARATUS AND METHODS FOR MANAGING EXPANDED CAPACITY OF VIRTUAL VOLUMES IN A STORAGE SYSTEM
    Publication number: 20120042114
    Abstract: Methods and apparatus for expanded capacity virtual volumes in a virtualized storage system. A storage controller of the storage system parses a SCSI command block as it is received to generate a tag value indicating a segment of a virtual volume to which the command block is directed. The tag value is used to select one of a plurality of mapping segment objects stored in a memory of the controller. Each mapping segment objects maps logical block addresses of a corresponding segment of a corresponding virtual volume to physical storage addresses on the physical storage devices that comprise the virtual volume. An I/O processing circuit of the controller then processes the SCSI command block in accordance with the mapping information in the selected mapping segment object. In one exemplary embodiment, each segment of a virtual volume comprises 2 terabytes of storage capacity of the virtual volume.
    Type: Application
    Filed: August 11, 2010
    Publication date: February 16, 2012
    Applicant: LSI CORPORATION
    Inventors: Howard Young, Mukul Kotwani, Srinivasa Nagaraja Rao, Kartik D. Agarwal, Gordon L. Larimer