Patents by Inventor Percy Tzelnic

Percy Tzelnic 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).

  • Patent number: 10481808
    Abstract: A storage system comprises a shared storage environment that includes a storage array having at least one storage volume shared between first and second host devices. The storage system further comprises a server associated with the storage array, at least first and second clients associated with the respective first and second host devices, and a first block cache arranged between the first client and the storage array. The server is configured to coordinate operations of the first and second clients relating to the storage volume shared between the first and second host devices in a manner that ensures coherency of data stored in the first block cache. The server may comprise a storage block mapping protocol (SBMP) server and the first and second clients may comprise respective SBMP clients. The block cache is illustratively implemented using a VFCache or other type of server flash cache.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: November 19, 2019
    Assignee: EMC IP Holding LLC
    Inventors: Gang Ma, Sorin Faibish, Percy Tzelnic, James M. Pedone, Jr.
  • Patent number: 10430233
    Abstract: Techniques are provided for scheduling computational tasks among multiple classes of storage resources based on a job classification. A job to be executed is classified into one of a plurality of predefined job classes. Each predefined job class is associated with a corresponding one of a plurality of predefined storage classes. The job is then assigned based on the classification to one of the storage resources of the predefined storage class associated with the classified predefined job class. Exemplary predefined storage classes include a performance class, a capacity class, a key-value storage class, and a shingled disk drive class. Exemplary predefined job classes include a CPU Intensive job class, an IO Intensive job class and a Small IO job class. Data required for a job is optionally prefetched before the job is assigned to a storage device. Data objects to be evicted from a storage device are optionally selected based on an anticipated future access.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: October 1, 2019
    Assignee: EMC Corporation
    Inventors: John M. Bent, James M. Pedone, Jr., Sorin Faibish, Percy Tzelnic, Sasan Teymouri
  • Patent number: 10382407
    Abstract: Techniques are provided for encryption and decryption of time series data using a digital filter array. A plurality of digital time series samples generated by a digital time series generation device are applied to a digital filter array (e.g., a finite impulse response filter or an infinite impulse response filter) that combines delayed versions of the digital time series samples using a plurality of coefficients to generate a plurality of encrypted digital time series samples. The plurality of coefficients comprise a portion of an encryption key associated with the digital time series generation device. The digital time series generation device has an associated device identifier, and the device identifier and the corresponding encryption key are registered with a server. The plurality of encrypted digital time series samples and the device identifier are provided to the server for decryption using an inverse digital filter array based on the encryption key.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: August 13, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Sorin Faibish, Dennis P. J. Ting, James M. Pedone, Jr., Percy Tzelnic
  • Patent number: 10305954
    Abstract: An apparatus in one embodiment comprises a storage system configured to implement at least one scalable video server. The storage system comprises a software-defined storage pool, and the scalable video server comprises a plurality of file system storage nodes each including a corresponding portion of the software-defined storage pool and an associated file system server. A streaming bandwidth of the scalable video server for a given video stream is controlled by adjusting the number of file system storage nodes utilized for the given video stream in the scalable video server. The file system servers of the respective file system storage nodes are configured to interact with a file system client associated with the given video stream. The streaming bandwidth of the scalable video server for the given video stream may be dynamically adjusted by adding or deleting file system storage nodes to or from the scalable video server.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: May 28, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Sorin Faibish, Dennis Ting, Percy Tzelnic, Dominique Cote, James M. Pedone, Jr.
  • Patent number: 10223025
    Abstract: An apparatus in one embodiment comprises a reconfigurable multi-tier storage system having at least a front-end storage tier and a back-end storage tier. The multi-tier storage system is implemented at least in part utilizing a plurality of replicated storage units. One or more of the replicated storage units are each utilized in a first configuration of the reconfigurable multi-tier storage system to implement a portion of at least one of a burst buffer appliance and a software-defined storage pool of the front-end storage tier. At least one of the one or more replicated storage units is utilized in a second configuration of the reconfigurable multi-tier storage system to implement a portion of at least one of a scale-out network-attached storage cluster and an object store of the back-end storage tier. A given one of the replicated storage units may be reconfigured by rebooting it using different software modules.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: March 5, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Sorin Faibish, Percy Tzelnic, Dennis Ting, James M. Pedone, Jr.
  • Patent number: 10191916
    Abstract: An apparatus in one embodiment comprises a multi-tier storage system having at least a front-end storage tier and a back-end storage tier. The multi-tier storage system is implemented at least in part utilizing a plurality of virtual machines of cloud infrastructure. The front-end storage tier comprises a plurality of storage nodes of a cluster file system, with the storage nodes being implemented on respective ones of the virtual machines. The front-end storage tier further comprises a software-defined storage pool accessible to the storage nodes and implemented utilizing local disk resources of respective ones of the virtual machines. The back-end storage tier of the multi-tier storage system comprises at least one object store. At least a subset of the virtual machines may further comprise respective compute nodes configured to access the multi-tier storage system. Other illustrative embodiments include systems, methods and processor-readable storage media.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: January 29, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Sorin Faibish, Dennis Ting, Percy Tzelnic, James M. Pedone, Jr., Boyd Wilson
  • Patent number: 10162836
    Abstract: Metadata associated with a plurality of sub-files associated with a single shared file is stored in a parallel file system. A plurality of processes generate a shared file. A compute node implements a Parallel Log Structured File System (PLFS) library to store at least one portion of the shared file and metadata for the at least one portion of the shared file on one or more of the plurality of object storage servers. The compute node is further configured to store the metadata by striping the metadata across a plurality of subdirectories of the shared file. The metadata is optionally striped across the plurality of subdirectories in a round-robin manner. The plurality of subdirectories are stored on one or more of the object storage servers. Write and read processes optionally communicate using a message passing interface. A given write process optionally writes metadata for a given portion of the shared file to an index file in a particular one of the subdirectories corresponding to the given portion.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: December 25, 2018
    Assignee: EMC IP Holding Company LLC
    Inventors: John M. Bent, Sorin Faibish, James M. Pedone, Percy Tzelnic, Uday Gupta
  • Patent number: 10140032
    Abstract: An apparatus in one embodiment comprises a storage system having at least first and second storage tiers each comprising a plurality of storage devices. The storage system implements at least one configurable data mover module adapted to interact with the first and second storage tiers and comprising at least one power management configuration file. The data mover module alters a manner in which data is moved between the first and second storage tiers based at least in part on a change in state of the power management configuration file. For example, the data mover module may be configurable via the power management configuration file in a mode of operation in which data movement from the first storage tier to the second storage tier occurs for data files utilized by a given application only after completion of a compute phase for that application.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: November 27, 2018
    Assignee: EMC IP Holding Company LLC
    Inventors: Sorin Faibish, Dennis Ting, James M. Pedone, Jr., Percy Tzelnic
  • Patent number: 10095701
    Abstract: An apparatus comprises a multi-tier storage system having a front-end storage tier, a back-end storage tier and a data mover module coupled to the front-end and back-end storage tiers and configured to control movement of data between the storage tiers. A translator at least partially incorporated in or otherwise associated with the multi-tier storage system implements a plurality of translation services and one or more index tables. A given one of the translation services is configured to access at least one of the index tables in order to determine a dynamically loadable namespace identifier associated with an application running on an analysis node that communicates with the multi-tier storage system over at least one network, and to instantiate a name node corresponding to the dynamically loadable namespace identifier. Particular objects of an object store of the back-end storage tier are made accessible to the application via the name node.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: October 9, 2018
    Assignee: EMC IP Holding Company LLC
    Inventors: Sorin Faibish, John M. Bent, Dennis Ting, Uday Gupta, Percy Tzelnic
  • Patent number: 9940037
    Abstract: A multi-tier storage system is provided that employs a burst buffer middleware appliance for batch messaging. An exemplary multi-tier storage system comprises at least first and second storage tiers comprising storage for storing data; and at least one burst buffer appliance, wherein the at least one burst buffer appliance comprises an abstract storage interface comprising a software interface module that communicates with at least one persistent storage device in at least one of the first and second storage tiers, wherein the at least one persistent storage device provides a list application programming interface, wherein the software interface module provides a batch operation comprised of a plurality of individual operations to the at least one persistent storage device using an aggregated message. The batch operation optionally comprises a batch operation for processing metadata. A burst buffer appliance is also provided for implementing the batch messaging techniques described herein.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: April 10, 2018
    Assignee: EMC Corporation
    Inventors: John M. Bent, Sorin Faibish, Dennis P. J. Ting, Percy Tzelnic, Uday Gupta
  • Patent number: 9934147
    Abstract: Techniques are provided for content-aware storage tiering techniques within a job scheduling system. A data node in a job scheduling environment receives at least one job to be executed for a portion of a larger logical file, and notifies one or more sibling data nodes to prefetch one or more related portions of the larger logical file. A write operation performed by an application client to store data on the data node is optionally intercepted at the data node and the associated data is stored in a performance storage tier of the data node. The data is optionally moved from the performance storage tier to a capacity storage tier if one or more predefined eviction criteria are satisfied. Data objects to be evicted are selected based on an anticipated future access of the data objects. The eviction selection is optionally based on grey box knowledge of the application client and/or information obtained from the application client.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: April 3, 2018
    Assignee: EMC Corporation
    Inventors: John M. Bent, Sorin Faibish, Dennis P. J. Ting, Percy Tzelnic, Uday Gupta
  • Patent number: 9916311
    Abstract: Improved techniques are provided for storing bursty data, such as checkpoints, in parallel computing environments. A parallel file system is provided comprising at least first and second storage tiers comprising respective disjoint subsets of storage; and at least one processing device configured to store burst data from a plurality of distributed processes for a given burst operation during the given burst operation on both of the at least first and second storage tiers. The given burst operation comprises a multi-phase input/output (IO) task, such as a checkpoint, having alternating periods of idle time and bursts of write and/or storage activity. A method is also provided for provisioning a parallel file system by obtaining a specification of burst data requirements for the parallel file system and determining an amount of storage required for at least first and second storage tiers comprising respective disjoint subsets of storage to satisfy the burst data requirements.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: March 13, 2018
    Assignee: EMC Corporation
    Inventors: John M. Bent, Sorin Faibish, Uday Gupta, Percy Tzelnic
  • Patent number: 9870168
    Abstract: A key-value store is provided having one or more key-value storage interfaces. A key-value store on at least one compute node comprises a memory for storing a plurality of key-value pairs; and an abstract storage interface comprising a software interface module that communicates with at least one persistent storage device providing a key-value interface for persistent storage of one or more of the plurality of key-value pairs, wherein the software interface module provides the one or more key-value pairs to the at least one persistent storage device in a key-value format. The abstract storage interface optionally processes one or more batch operations on the plurality of key-value pairs. A distributed embodiment for a partitioned key-value store is also provided.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: January 16, 2018
    Assignees: EMC Corporation, Los Alamos National Security, LLC
    Inventors: John M. Bent, Sorin Faibish, Dennis P. J. Ting, Percy Tzelnic, Uday Gupta, Gary Grider, David J. Bonnie
  • Patent number: 9852146
    Abstract: A cluster file system is provided having a plurality of distributed metadata servers with shared access to one or more shared low latency persistent key-value metadata stores. A metadata server comprises an abstract storage interface comprising a software interface module that communicates with at least one shared persistent key-value metadata store providing a key-value interface for persistent storage of key-value metadata. The software interface module provides the key-value metadata to the at least one shared persistent key-value metadata store in a key-value format. The shared persistent key-value metadata store is accessed by a plurality of metadata servers. A metadata request can be processed by a given metadata server independently of other metadata servers in the cluster file system. A distributed metadata storage environment is also disclosed that comprises a plurality of metadata servers having an abstract storage interface to at least one shared persistent key-value metadata store.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: December 26, 2017
    Assignees: EMC IP Holding Company LLC, Los Alamos National Security, LLC
    Inventors: John M. Bent, Sorin Faibish, James M. Pedone, Jr., Percy Tzelnic, Dennis P. J. Ting, Latchesar A. Ionkov, Gary Grider
  • Patent number: 9672151
    Abstract: A storage system comprises a shared storage environment that includes a storage array having at least one storage volume shared between first and second host devices. The storage system further comprises a server associated with the storage array, at least first and second clients associated with the respective first and second host devices, and a first block cache arranged between the first client and the storage array. The server is configured to coordinate operations of the first and second clients relating to the storage volume shared between the first and second host devices in a manner that ensures coherency of data stored in the first block cache. The server may comprise a storage block mapping protocol (SBMP) server and the first and second clients may comprise respective SBMP clients. The block cache is illustratively implemented using a VFCache or other type of server flash cache.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: June 6, 2017
    Assignee: EMC IP Holding Company LLC
    Inventors: Gang Ma, Sorin Faibish, Percy Tzelnic, James M. Pedone, Jr.
  • Patent number: 9652568
    Abstract: For simulating a parallel supercomputing cluster, a simulation program includes a model of the system of compute nodes and a model of an I/O subsystem that stores checkpoints from the compute nodes. When executed, instructions in the simulation program perform the steps of receiving input parameters defining the compute nodes and the I/O subsystem, computing a total number of computational flops for a time between checkpoints and an amount of disk storage required to store the checkpoint data for different configurations of the parallel supercomputing cluster, and presenting a summary to a user of the computed number of computational flops for a time between checkpoints and an amount of disk storage required to store the checkpoint data for the different configurations of the parallel supercomputing cluster.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: May 16, 2017
    Assignee: EMC IP HOLDING COMPANY LLC
    Inventors: Percy Tzelnic, Sorin Faibish, Uday K. Gupta, John Bent
  • Patent number: 9501488
    Abstract: Data migration techniques are provided using parallel log-structured file system middleware to overcome file system limitations. A data file is migrated from a first storage tier to an archive storage tier, where the data file exceeds performance and/or capacity limitations of the archival storage tier, by writing the data file to a plurality of sub-files using a parallel data mover process, wherein each of the plurality of sub-files satisfy the performance and capacity limitations of the archival storage tier; and storing the plurality of sub-files to the archival storage tier using a log-structured file system. The log-structured file system optionally comprises a Parallel Log-Structured File System (PLFS) and the archival storage tier optionally comprises a multi disk storage tier. The parallel data mover process divides a size of the data file by a file size limit of the archival storage tier to determine of a number of the plurality of sub-files.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: November 22, 2016
    Assignee: EMC IP Holding Company LLC
    Inventors: John M. Bent, Sorin Faibish, Uday Gupta, Percy Tzelnic
  • Patent number: 9465549
    Abstract: An apparatus comprises a cluster file system, a burst buffer appliance coupled to the cluster file system, a high-speed memory pool configured for allocation between the cluster file system and the burst buffer appliance, and a controller associated with the high-speed memory pool and configured to dynamically adapt portions thereof between utilization as object storage servers of the cluster file system and utilization as burst buffers of the burst buffer appliance. By way of example, the high-speed memory pool comprises a plurality of flash servers that are reconfigurable between utilization as respective ones of the object storage servers of the cluster file system and utilization as respective ones of the burst buffers of the burst buffer appliance. The controller is configured to dynamically adapt the flash servers between utilization as respective object storage servers of the cluster file system and utilization as respective burst buffers of the burst buffer appliance.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: October 11, 2016
    Assignee: EMC Corporation
    Inventors: Sorin Faibish, John M. Bent, Percy Tzelnic, Uday Gupta, James M. Pedone, Jr.
  • Patent number: 9286261
    Abstract: A parallel supercomputing cluster includes compute nodes interconnected in a mesh of data links for executing an MPI job, and solid-state storage nodes each linked to a respective group of the compute nodes for receiving checkpoint data from the respective compute nodes, and magnetic disk storage linked to each of the solid-state storage nodes for asynchronous migration of the checkpoint data from the solid-state storage nodes to the magnetic disk storage. Each solid-state storage node presents a file system interface to the MPI job, and multiple MPI processes of the MPI job write the checkpoint data to a shared file in the solid-state storage in a strided fashion, and the solid-state storage node asynchronously migrates the checkpoint data from the shared file in the solid-state storage to the magnetic disk storage and writes the checkpoint data to the magnetic disk storage in a sequential fashion.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: March 15, 2016
    Assignees: EMC Corporation, Los Alamos National Security, LLC
    Inventors: Percy Tzelnic, Sorin Faibish, Uday K. Gupta, John Bent, Gary Alan Grider, Hsing-bung Chen
  • Patent number: 9165014
    Abstract: Techniques are provided for storing files in a parallel computing system using different resolutions. A method is provided for storing at least one file generated by a distributed application in a parallel computing system. The file comprises one or more of a complete file and a sub-file. The method comprises the steps of obtaining semantic information related to the file; generating a plurality of replicas of the file with different resolutions based on the semantic information; and storing the file and the plurality of replicas of the file in one or more storage nodes of the parallel computing system. The different resolutions comprise, for example, a variable number of bits and/or a different sub-set of data elements from the file. A plurality of the sub-files can be merged to reproduce the file.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: October 20, 2015
    Assignees: EMC Corporation, Los Alamos National Security, LLC
    Inventors: Sorin Faibish, John M. Bent, Percy Tzelnic, Gary Grider, Aaron Torres