Patents by Inventor Aleksey V. Pershin

Aleksey V. Pershin 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).

  • Tracking block-level changes using snapshots
    Patent number: 8117410
    Abstract: Writes to blocks of a protected storage volume that occur between the beginning of a prior backup interval and the beginning of a current backup interval are tracked using a first snapshot that is maintained through the current backup interval. At the beginning of the current backup interval, a second snapshot is generated. Blocks that are indicated by a dirty block list of the first snapshot as having been changed are read from the snapshot volume for the second snapshot and copied to a backup storage volume. For the next backup interval, the second snapshot or alternatively, a newly generated third snapshot, is used to track writes to blocks of a protected storage volume that occur between the beginning of the current backup interval and the beginning of a next backup interval.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: February 14, 2012
    Assignee: VMware, Inc.
    Inventors: Ping Lu, Ilia Langouev, Aleksey V. Pershin, Sudarsan R. Piduri, Erik Weathers
  • Tracking Block-Level Changes Using Snapshots
    Publication number: 20100077165
    Abstract: Writes to blocks of a protected storage volume that occur between the beginning of a prior backup interval and the beginning of a current backup interval are tracked using a first snapshot that is maintained through the current backup interval. At the beginning of the current backup interval, a second snapshot is generated. Blocks that are indicated by a dirty block list of the first snapshot as having been changed are read from the snapshot volume for the second snapshot and copied to a backup storage volume. For the next backup interval, the second snapshot or alternatively, a newly generated third snapshot, is used to track writes to blocks of a protected storage volume that occur between the beginning of the current backup interval and the beginning of a next backup interval.
    Type: Application
    Filed: November 13, 2009
    Publication date: March 25, 2010
    Applicant: VMware, Inc.
    Inventors: Ping LU, Ilia LANGOUEV, Aleksey V. PERSHIN, Sudarsan R. PIDURI, Erik WEATHERS