Patents by Inventor Peter E. Tolvanen

Peter E. Tolvanen 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).

  • Techniques for maintaining cache coherence by atomically processing groups of storage commands
    Patent number: 9916244
    Abstract: Improved techniques for maintaining cache coherence in a consistent state are provided. These techniques implement a data storage system using a journaled mirrored cache that ensures that storage operations making up certain transactions be performed atomically, so that a system failure does not result in data loss. The improved techniques also allow for efficient communication of mirroring information.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: March 13, 2018
    Assignee: EMC IP Holding Company LLC
    Inventors: Peter E. Tolvanen, Henry Austin Spang, IV, Gregory S. Schaffer, Philippe Armangau, Christopher A. Seibel
  • Storage system with dynamic transfer of block file system ownership for load balancing
    Patent number: 9152550
    Abstract: A storage system uses a block-level file system to manage physical storage of data blocks of logical units, the file system being mounted on an owning one of a set of storage processors. The storage processors redirect received storage requests to the owning storage processor, and periodically the amount of redirection is evaluated. If the amount of redirection is higher than a threshold, then the file system is dismounted at the owning storage processor and mounted at another storage processor to reduce the amount of redirection.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: October 6, 2015
    Assignee: EMC Corporation
    Inventors: Alan Lee Taylor, Paul T. McGrath, David W. Harvey, Peter E. Tolvanen, Miles A. de Forest, Dayanand Suldhal, Nagapraveen Veeravenkata Seela, David Haase