Patents by Inventor Chakib Ouarraoui

Chakib Ouarraoui 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: 10996967
    Abstract: First and second virtual storage controllers represent first and second physical storage controllers that provide access to different physical storage devices that back first and second virtual disks. One or more computing nodes host a virtual storage array that includes paired virtual storage directors. Each virtual storage director has access to both the first and second virtual storage controllers. Thus, the virtual disks may be presented to the storage directors as dual-ported disks even if the physical storage devices are single-ported. The virtual storage directors and virtual storage controllers may each be hosted by a separate virtual machine or instantiated in a separate container.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: May 4, 2021
    Assignee: EMC IP HOLDING COMPANY LLC
    Inventors: Jonathan Krasner, Chakib Ouarraoui, Steven McClure
  • Patent number: 10956069
    Abstract: The system and methods disclosed herein relate to an improvement in automated data tiering technology. The systems and methods disclosed herein enhance database storage performance characteristics in myriad ways. First, the speed with which data can be relocated from one tier to another in a tiered data storage system is increased by reducing the number of sort cycles required to perform data relocation. In addition, data relocation among the tiers is performed on the backend by an offload engine, which results in uninterrupted access to read/write commands within the data storage system from a user's perspective on the frontend. Third, users are able to adjust the percentages of hot or cold data that are relocated within the database without having to alter the service level agreements. In this way, users can make spontaneous changes to performance characteristics related to the promotion and demotion of data stored within a tiered data storage system.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: March 23, 2021
    Assignee: EMC IP Holding Company LLC
    Inventors: Peter Y. Kushner, Jonathan I. Krasner, Chakib Ouarraoui
  • Publication number: 20210064403
    Abstract: One or more aspects of the present disclosure relate to allocating virtual memory to one or more virtual machines (VMs). The one or more VMs can be established by a hypervisor of a storage device. The virtual memory can be allocated to the established one or more VMs. The virtual memory can correspond to non-volatile (NV) memory of a global memory of the storage device.
    Type: Application
    Filed: August 27, 2019
    Publication date: March 4, 2021
    Applicant: EMC IP Holding Company LLC
    Inventors: Serge Pirotte, John Krasner, Chakib Ouarraoui, Mark Halstead
  • Patent number: 10852954
    Abstract: A storage array is implemented as a virtual machine on a server. The virtual storage array includes a virtual engine with virtual directors and virtualized processor and memory resources. Embedded storage software converts Input/Output requests into Input/Output requests that can be serviced by the virtual machine. A virtual backend driver enables the virtual storage directors to access a set of virtual drives. A virtualized shared memory driver provides emulated input/output, XOR, direct memory access and copy services for send and receive threads.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: December 1, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Jonathan Krasner, Chakib Ouarraoui, Matt Fredette
  • Publication number: 20200348907
    Abstract: A method and computing system for sorting position-dependent data arrays. Specifically, the method and computing system disclosed herein entail: first, sorting one position-dependent data array according to a desired sorting order; and second, permuting the remaining position-dependent data arrays, based on the sorted position-dependent data array, in order to maintain the same relative positions of the various data stored across the position-dependent data arrays. Through this aforementioned sorting of position-dependent data arrays, a GPU may produce sorted structure of arrays from unsorted structure of arrays.
    Type: Application
    Filed: April 30, 2019
    Publication date: November 5, 2020
    Inventors: Jonathan I. Krasner, Chakib Ouarraoui
  • Publication number: 20200265034
    Abstract: Techniques for data deduplication may include: receiving write operations that write first data; partitioning the first data into a plurality of data portions; generating, using a first hash function, a plurality of data deduplication hash values for the plurality of data portions, wherein a first data deduplication hash value of the plurality of data deduplication hash values is produced by said generating for a first of the plurality of data portions; performing first processing using a Bloom filter to determine whether the first data deduplication hash value has a corresponding first entry in a data store of deduplication hash values; and responsive to the first processing determining the first data deduplication hash value does not have the corresponding first entry in the data store of deduplication hash values, performing second processing, said second processing including adding the corresponding first entry in the data store of deduplication hash values.
    Type: Application
    Filed: May 4, 2020
    Publication date: August 20, 2020
    Applicant: EMC IP Holding Company LLC
    Inventors: Steven Chalmer, Jonathan Krasner, Chakib Ouarraoui, Serge J. Pirotte
  • Patent number: 10678778
    Abstract: Techniques for data deduplication may include: receiving write operations that write first data; partitioning the first data into a plurality of data portions; generating, using a first hash function, a plurality of data deduplication hash values for the plurality of data portions, wherein a first data deduplication hash value of the plurality of data deduplication hash values is produced by said generating for a first of the plurality of data portions; performing first processing using a Bloom filter to determine whether the first data deduplication hash value has a corresponding first entry in a data store of deduplication hash values; and responsive to the first processing determining the first data deduplication hash value does not have the corresponding first entry in the data store of deduplication hash values, performing second processing, said second processing including adding the corresponding first entry in the data store of deduplication hash values.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: June 9, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Steven Chalmer, Jonathan Krasner, Chakib Ouarraoui, Serge J. Pirotte
  • Patent number: 10540202
    Abstract: Embodiments are described for a executing a processing job using one or more nodes of a storage area network using computing resources on the SAN that are predicted to be idle. A predictive model is generated by monitoring idle states of resources of nodes of the SAN and using machine learning to build the predictive model. A scheduler executes jobs on one or more nodes of the SAN with sufficient predicted idle resources to process the job, in accordance with resource requirements and job attributes in a manifest of the job. If a job cannot be completed during a window of time that the necessary resources are predicted to be idle, or if one or more resources become unavailable, the job can be paused and resumed, migrated to another node, or restarted at a later time when the required resources to complete the job are predicted to be idle.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: January 21, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Stephen Smaldone, Ian Wigmore, Steven Chalmer, Jonathan Krasner, Chakib Ouarraoui
  • Publication number: 20190347026
    Abstract: The system and methods disclosed herein relate to an improvement in automated data tiering technology. The systems and methods disclosed herein enhance database storage performance characteristics in myriad ways. First, the speed with which data can be relocated from one tier to another in a tiered data storage system is increased by reducing the number of sort cycles required to perform data relocation. In addition, data relocation among the tiers is performed on the backend by an offload engine, which results in uninterrupted access to read/write commands within the data storage system from a user's perspective on the frontend. Third, users are able to adjust the percentages of hot or cold data that are relocated within the database without having to alter the service level agreements. In this way, users can make spontaneous changes to performance characteristics related to the promotion and demotion of data stored within a tiered data storage system.
    Type: Application
    Filed: July 24, 2019
    Publication date: November 14, 2019
    Inventors: Peter Y. Kushner, Jonathan I. Krasner, Chakib Ouarraoui
  • Patent number: 10409501
    Abstract: The system and methods disclosed herein relate to an improvement in automated data tiering technology. In these embodiments, users are able to weigh the importance of read, write, and pre-fetch operations in terms of tier placement within the data storage system. Data relocation evaluations are performed by an off-load engine, e.g., a graphics processing unit, which utilizes parallel processing on data arrays/vectors/extents. The data relocation candidates are identified via calculating a mobility score on an extent-by-extent basis. Data are then relocated within the various tiers of the data storage system.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: September 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Peter Kushner, Jonathan Krasner, Chakib Ouarraoui
  • Patent number: 10409516
    Abstract: The system and methods disclosed herein relate to an improvement in automated data tiering technology. The systems and methods disclosed herein enhance database storage performance characteristics in myriad ways. First, the speed with which data can be relocated from one tier to another in a tiered data storage system is increased by reducing the number of sort cycles required to perform data relocation. In addition, data relocation among the tiers is performed on the backend by an offload engine, which results in uninterrupted access to read/write commands within the data storage system from a user's perspective on the frontend. Third, users are able to adjust the percentages of hot or cold data that are relocated within the database without having to alter the service level agreements. In this way, users can make spontaneous changes to performance characteristics related to the promotion and demotion of data stored within a tiered data storage system.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: September 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Peter Y. Kushner, Jonathan I. Krasner, Chakib Ouarraoui