Patents Assigned to EMC ÏP HOLDING COMPANY LLC
  • Method for locating data on a deduplicated storage system using a SSD cache index
    Patent number: 10503717
    Abstract: A method, article of manufacture, and apparatus for locating data inside a deduplicated storage system is discussed. An index on a solid state device may contain a finger print to container identifier mapping. The container identifier may identify a logical container storing data related to the fingerprint. This data may therefore be located using the index given the fingerprint.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Satish Visvanathan, Mahesh Kamat, Rahul B Ugale
  • Maximizing network throughput between deduplication appliances and cloud computing networks
    Patent number: 10505857
    Abstract: A system and method for maximizing network throughput by dynamically tuning the number of connections used during data transfer with various cloud providers. This adaptive tuning of the network connections is based on the accepted request rate for the cloud provider, the outstanding transfer capacity of the cloud network as derived from the network bandwidth, and errors and retry requests from the network and the cloud provider.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Venkata Bandlamudi, Kalyani Sundaralingam, Nitin Madan, Bhimsen Bhanjois, Debasish Garai
  • Multi-framework distributed computation
    Patent number: 10505863
    Abstract: A computing device of a data zone includes a persistent storage and a processor. The persistent storage includes a locked data batch of the data zone. The processor obtains an upstream computation request; instantiates a computation framework to process the locked data batch based on a global data batch specified in the upstream computation request; instantiates a downstream computation manager to manage a downstream computation; and instantiates, by the downstream computation manager, a second computation framework in a second computing device of a second data zone to process a second locked data batch of the second data zone.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Patricia Gomes Soares Florissi, Ofri Masad
  • Time dependent service level objectives
    Patent number: 10503672
    Abstract: Described are techniques for processing I/O operations that may include: issuing, by a process of an application on a host, an I/O operation; tagging the I/O operation with a tag value in accordance with a process name associated with the process that issued the I/O operation; sending the I/O operation from the host to a data storage system; and determining, on the data storage system, an service level objective (SLO) for the I/O operation in accordance with the tag value of the I/O operation. The process name may include a first portion and a second customizable or configurable portion used to distinguish between different instance of the same application process. It may be determined which of multiple time-dependent SLOs for the process name is active and used with the I/O operation based on a receipt or processing time associated with the I/O operation.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Thomas F. O'Neill, Sanjib Mallick, Arieh Don, Vinay G. Rao
  • System and method for concurrent multipoint backup
    Patent number: 10503428
    Abstract: A remote backup agent that provides support services includes a persistent storage storing a bad host map and a processor that obtains a first support request for a virtual machine of the virtual machines; obtains a capacity analysis of the backup storages in response to the request; makes a first determination, using the capacity analysis, that the backup storages do not have sufficient capacity to service the support request; in response to the first determination: predicts a future capacity of the backup storages and makes a second determination, using the predicted future capacity, that the backup storages have sufficient capacity to service the support request at a future point in time; in response to the second determination: initiates a support session between the remote backup agent and the virtual machine using the bad host map at the future point in time to service the first support request.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Shelesh Chopra, Manish Sharma, Sunil Yadav
  • Anomaly score generation based on adaptive clustering of user location
    Patent number: 10505963
    Abstract: Techniques are provided for determining anomaly scores for transactions based on adaptive clustering of the location of a given user over multiple transactions.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Alex Zaslavsky, Liron Liptz, Shay Amram, Kevin Bowers
  • System and method of obtaining data from private cloud behind enterprise firewall
    Patent number: 10505903
    Abstract: A public cloud includes a processor. The processor obtains, from a client via a first network connection, a data access request that specifies data stored in a private cloud separated from the public cloud server by a firewall; sends the data access request to the private cloud through the firewall via a second network connection; receives the data stored in the private cloud via the second network connection; and forwards the received data stored in the private cloud to the client.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Rohan Pednekar, Pramod Biradar, Ritansh Raj
  • Method for parallel file system upgrade in virtual storage environment
    Patent number: 10503703
    Abstract: A method for upgrading a file system in a data storage environment is provided. A storage system identifies a set of boundaries of one or more sets of hard disks based on a first block management data structure (BMDS), where the first BMDS includes information describing a storage volume representing the one or more sets of hard disks. For each identified boundary, the storage system identifies a data block range of a set of data blocks, where the data block range includes metadata of one set of hard disks that is stored on the set of data blocks. Further, the storage system concurrently generates a plurality of second BMDSs, each of the second BMDS corresponding to one of the sets of hard disks, including simultaneously retrieving metadata of the sets of hard disks, where the second BMDSs are constructed based on the retrieved metadata, representing an upgraded file system.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Jayasekhar Konduru, Shuang Liang, Mahesh Kamat, Akshay Narayan Muramatti, Arun Keshavamurthy
  • Techniques for optimizing entropy computations
    Patent number: 10505563
    Abstract: Techniques for data processing may include: determining a data layout for a configuration of counters stored in registers, wherein each of the registers is configured to store at least two counters, and each counter is associated with a particular data item allowable in the data set and denotes a current frequency of the particular data item; receiving data items of a data chunk of the data set; for each data item received, performing processing including: determining a first of the counters corresponding to the data item, wherein the first counter is stored in a first of the registers and denotes a current frequency of the data item; and incrementing the first counter stored in the first register by one; and determining, in accordance with the counters stored in the registers, an entropy value for the data chunk.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Istvan Gonczi, Ivan Bassov, Sorin Faibish
  • Distributed service level management with performance resilience objectives
    Patent number: 10503437
    Abstract: Execution of I/O operations for an application is managed to improve consistency of performance for an I/O performance metric for the application. Such control may be achieved by defining a value for a performance resilience objective (PRO) parameter, and applying the PRO value to I/O requests of the application. The PRO value may define a value indicative of an extent to which I/O performance can deviate from a performance objective (e.g., as defined by a service level) over time; i.e., a tolerance for such deviation. Components of a computer network may be configured to apply PRO values to I/O requests for one or more applications. The PRO values of applications may be distributed to one or more components of a data storage system and one or more components of a host system, and these components may be configured to apply the PRO values to I/O requests of the subject applications.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Owen Martin, Arieh Don, Vinay G. Rao
  • Concurrent data entropy and digest computation operating on same data for CPU cache efficiency
    Patent number: 10503516
    Abstract: Techniques for CPU cache efficiency may include performing concurrent processing, such as for first and second data operations, in a synchronized manner that prevents loading the same data chunk into the CPU cache more than once. Processing may include synchronizing the first and second data operations with respect to a first data chunk to ensure that both complete prior to proceeding with performing such processing on a second data chunk. The first and second data operations for a chunk may be deduplication digest computation and entropy computation performed inline as part of the data path. If the chunk cannot be deduplicated, the entropy value may be used with an adaptive entropy threshold to determine whether to compress the chunk inline. The entropy value may be determined using less than all bytes in the chunk. The chunk's entropy value may be determined based on a data set entropy value.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Sorin Faibish, Ivan Bassov, Rustem Rafikov
  • Replication link smoothing using historical data
    Patent number: 10503609
    Abstract: A computer program product, system, and method for determining a number of chunks written to a storage volume during a first replication cycle; determining a host write rate based on the number of chunks written to the storage volume during the first replication cycle; estimating a number of chunks written during a second replication cycle; determining a target rate based on the estimated number of chunks written during the second replication cycle; and transmitting chunks written during the second replication cycle at the target rate.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: December 10, 2019
    Assignee: EMC IP HOLDING COMPANY LLC
    Inventors: William Stronge, David Meiri
  • System and method for reference tracking garbage collector
    Patent number: 10503429
    Abstract: A method, computer program product, and computer system for determining, by a computing device, that an object of a plurality of objects is an orphan. It may be determined that the object is older than a threshold age. A capacity occupied by the object may be reclaimed based upon, at least in part, determining that the object is an orphan and determining that the object is older than the threshold age.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Mikhail Danilov, Nikita Gutsalov, Alexander Fedorov, Konstantin Buinov, Gregory Skripko
  • Method for running HPC jobs
    Patent number: 10505864
    Abstract: A computer-executable method, system, and computer program product for managing a cloud computing resource in communication with a data storage system, the computer-executable method, system, and computer program product comprising receiving configuration information at the data storage system related to a host application; determining an optimized configuration for the host application; and creating an implementation of the optimized configuration based on one or more resources enabled to be accessed by the data storage system.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Sorin Faibish, John M. Bent, James M. Pedone, Jr., James J. Moore, Percy Tzelnic, Dominique P. Cote
  • System and method for cache replacement using access-ordering lookahead approach
    Patent number: 10503423
    Abstract: In response to a request for accessing a file stored in a storage system, data objects associated with the file are retrieved from a storage device of the storage system. The data objects of the file are cached in a cache memory. An access sequence of the cached data objects within the file is determined based on metadata of the file, where the access sequence represents a sequential order in time of accessing the cached data objects within the file. In response to a request for cache space reclamation, one or more cached data objects are identified whose next access is a farthest in time from a data object currently being accessed amongst the cached data objects based on the access sequence of the data objects. The identified data objects are evicted from the cache memory whose next access is a farthest amongst the cached data objects.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Frederick Douglis, Windsor W. Hsu, Hangwei Qian
  • Requirements based performance monitoring for virtual machine networks
    Patent number: 10503535
    Abstract: Embodiments are directed to a requirements-based performance monitor (RBPM) that presents users, through a command line interface or graphical user interface, with a single number in the range of 1-100% and/or a color-coded indicator that allows users to readily tell if the I/O needs of their primary applications in a virtualized computing system are being sufficiently satisfied. The RBPM takes into account both device latency, throughput, IOPS, and slow I/O measurements and primary application requirements. The process uses detailed device latency tables for each device to allow a user to find the particular device and time that performance degradation occurred.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Charles Hickey, Manivannan Chithirasen
  • Data protection management for distributed storage
    Patent number: 10503611
    Abstract: An efficient and scalable method of managing data protection in a geographically distributed storage system is provided using erasure coding. Each zone in the geographically distributed storage system of multiple zones or clusters encodes primary backup chunks replicated from original data chunks in remote zones to create coding chunks. The zone retains one of the coding chunks and distributes the remaining coding chunks to remote zones for future recovery from dual and more complex failures. Upon completion, the primary backup chunks and peer backup chunks can safely be deleted to reduce overhead. Encoding k primary backup chunks to create m coding chunks, and distributing the m coding chunks to different remote zones assures recovery from 1 to m zone/cluster/chunk failures.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Shashwat Srivastav, Mikhail Danilov, Sriram Sankaran, Jun Luo, Subba R. Gaddamadugu, Peter M. Musial, Andrew D. Robertson, Chen Wang
  • Methods and systems for software protection within an isolated environment
    Patent number: 10503610
    Abstract: According to some embodiments, an isolated storage system determines whether a secure network has been activated for data backup or data replication of a storage system. In response to determining that the secure network has been activated, the isolated storage system instantiates an instance of a backup software to perform the data backup or data replication of the storage system. The isolated storage system performs the data backup or data replication of the storage system via the instance of the backup software.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Jehuda Shemer, Assaf Natanzon
  • Cataloging storage arrays
    Patent number: 10503757
    Abstract: A cataloging period associated with a storage array is received. The storage array is cataloged to create an index for data stored on the storage array. New data is stored on the storage array. A determination is made as to whether the storage array should be re-cataloged to update the index. If the cataloging period has not elapsed, the determination is that the storage array should not be re-cataloged, the index thereby not being updated for the new data on the storage array. If the cataloging period has elapsed, the determination is that the storage array should be re-cataloged, the index thereby being updated for the new data on the storage array.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventor: Upanshu Singhal
  • Method and apparatus for file system
    Patent number: 10503695
    Abstract: The present disclosure relates to a method and apparatus for a file system, the file system comprising at least a first logical storage area and a second logical storage area, a logical block of the first logical storage area and that of the second logical storage area being different in size, and in response to a request for creating a file, selecting a logical storage area for storing the file from the at least first logical storage area and second logical storage area; and storing the file in the selected logical storage area. According to the above various embodiments of the present invention, a direct and effective way may be used to support variable-length block size in a file system, without increasing metadata and positioning overheads.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: December 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Jia Zhai, Yingchao Zhou, Wengang Wang, Jun Guo, Sen Zhang