Patents by Inventor Daniel W. Ting

Daniel W. Ting 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).

  • Deduplicating data blocks in a storage system
    Patent number: 9256378
    Abstract: A method for sharing data blocks in a hierarchical file system in a storage server includes allocating a plurality of data blocks in the file system, and sharing data blocks in the file system, without using a persistent point-in-time image, to avoid duplication of data blocks. A method for identifying data blocks that can be shared includes computing a fingerprint for each of multiple data blocks to be written to a storage facility and storing the fingerprint with information identifying the data block in an entry in a set of metadata. The set of metadata is used to identify data blocks which are duplicates.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: February 9, 2016
    Assignee: NetApp, Inc.
    Inventors: Ling Zheng, Blake H. Lewis, Daniel W. Ting, Robert M. English, Stephen L. Manley
  • Method and apparatus for identifying and eliminating duplicate data blocks and sharing data blocks in a storage system
    Patent number: 8849767
    Abstract: A method for sharing data blocks in a hierarchical file system in a storage server includes allocating a plurality of data blocks in the file system, and sharing data blocks in the file system, without using a persistent point-in-time image, to avoid duplication of data blocks. A method for identifying data blocks that can be shared includes computing a fingerprint for each of multiple data blocks to be written to a storage facility and storing the fingerprint with information identifying the data block in an entry in a set of metadata. The set of metadata is used to identify data blocks which are duplicates.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: September 30, 2014
    Assignee: NetApp, Inc.
    Inventors: Ling Zheng, Blake H. Lewis, Daniel W. Ting, Robert M. English, Stephen L. Manley
  • Method and Apparatus for Identifying and Eliminating Duplicate Data Blocks and Sharing Data Blocks in a Storage System
    Publication number: 20130262805
    Abstract: A method for sharing data blocks in a hierarchical file system in a storage server includes allocating a plurality of data blocks in the file system, and sharing data blocks in the file system, without using a persistent point-in-time image, to avoid duplication of data blocks. A method for identifying data blocks that can be shared includes computing a fingerprint for each of multiple data blocks to be written to a storage facility and storing the fingerprint with information identifying the data block in an entry in a set of metadata. The set of metadata is used to identify data blocks which are duplicates.
    Type: Application
    Filed: May 23, 2013
    Publication date: October 3, 2013
    Inventors: Ling Zheng, Blake H. Lewis, Daniel W. Ting, Robert M. English, Stephen L. Manley
  • Method and system for secure and reliable event logging
    Patent number: 7441153
    Abstract: A method and system for secure and reliable event data logging are disclosed. In accordance with an embodiment of the invention, event data is generated for events relating to backup, or archiving, operations. The event data is appended to the log file. However, during the operation to append the event data to the log file, the appending operation is monitored to determine whether the event logging operation is successful. If the event logging operation is unsuccessful, the event data is retained in memory until the event data can be successfully appended to the log file.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: October 21, 2008
    Assignee: Network Appliance Inc.
    Inventors: Amol R. Chitre, Rimas A. Svarcas, Daniel W. Ting
  • In a data storage server, for each subsets which does not contain compressed data after the compression, a predetermined value is stored in the corresponding entry of the corresponding compression group to indicate that corresponding data is compressed
    Patent number: 7200603
    Abstract: In a technique for compressing data, a data storage server receives a set of data, which includes a first number of subsets. The storage server defines a number of compression groups for the set of data, each compression group including multiple entries, each entry containing a pointer to a different subset of the set of data. At least part of the set of data is then compressed into a smaller number of subsets. For each of the subsets which does not contain compressed data after the compression, a predetermined value is stored in the corresponding entry of the corresponding compression group, to indicate that corresponding data is compressed and represented elsewhere in the compression group. The predetermined value may also indicate which compression algorithm was used to compress the data.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: April 3, 2007
    Assignee: Network Appliance, Inc.
    Inventors: David Hitz, Mehul S. Shah, Daniel W. Ting, James J. Voll