Patents by Inventor Siamak Nazari

Siamak Nazari 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: 11144453
    Abstract: In some examples, sectors of a solid-state drive are unmapped to initialize the sectors. The sectors include a data portion and a protection portion. When an unmapped sector is read, the solid-state drive can return a pre-set value for the unmapped sector, where the pre-set value includes a known fixed value to represent the protection portion of the unmapped sector. The storage controller is to recognize the known fixed value returned by the solid-state drive responsive to the read as representing the unmapped sector as being initialized, but not written to.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: October 12, 2021
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Siamak Nazari, Thomas David Evans, Faris Hindi, Daniel Aaron Harbaugh, Anahita Afkham
  • Patent number: 11126451
    Abstract: A technique includes changing a configuration setting of a virtual volume of data stored in a storage system. The technique includes converting data of the virtual volume in place to reflect the changing of the configuration setting.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: September 21, 2021
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Siamak Nazari, Srinivasa D. Murthy
  • Publication number: 20210224236
    Abstract: Storage systems and methods provide efficient deduplication with support for fine grained deduplication or deduplication with variable sized blocks. The storage system does not overwrite data in backend media but tracks operations such as writes using generation numbers, for example, to distinguish writes to the same virtual storage locations. A deduplication index, a data index, and a reference index may be used when performing operations such as reads, writes with deduplication, relocation of data blocks within backend media, and garbage collection.
    Type: Application
    Filed: February 5, 2020
    Publication date: July 22, 2021
    Inventors: Jin Wang, Siamak Nazari
  • Publication number: 20210224161
    Abstract: A method for a storage system to process input and output operations. The method includes receiving writes over time to an address at a base virtual volume, storing each of the writes in a physical storage at a new location that is without existing data, tagging each stored write with a different generation number to distinguish between different versions of data written to the address at the base virtual volume, receiving a read of the address at the base virtual volume, and, in response to the read of the address at the base virtual volume, returning one of the stored writes that is tagged with a newer generation number than a remainder of the stored writes.
    Type: Application
    Filed: January 21, 2020
    Publication date: July 22, 2021
    Inventors: Jin Wang, Siamak Nazari
  • Patent number: 10963377
    Abstract: Examples include compressed pages having data and compression metadata. Some examples include receiving a write request containing write data, storing the write data in data cache, and applying a page fit process to the write data. In some such examples, a virtual page table entry in a virtual page table may be generated for the processed write data. The virtual page table entry may include a compression index and a page address. An inline compression of the processed write data may be performed to compress and store the processed write data in a compressed page at a location associated with the compression index. In some examples, the compressed page may include a compression metadata having a reference count, a compressed page offset, and a virtual page address.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: March 30, 2021
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Shankar Iyer, Srinivasa D Murthy, Siamak Nazari, Gilad Sade
  • Publication number: 20210065296
    Abstract: A computer-implemented integrated framework for managing real-time financial trades and risk management is described herein. Quantitative and sentimental parameters of trading market are identified and analyzed. A stock selection module having a deep learning architecture performs future predictions based on the analyzed quantitative and sentimental parameters, wherein the stock selection module comprises. A probability number in percentage is assigned to a trading decision. Based on the assigned probabilities to different trading decisions, entrance and exit signals are provided to a user based on their preferences such as the user's risk tolerance.
    Type: Application
    Filed: November 13, 2020
    Publication date: March 4, 2021
    Inventors: Siamak NAZARI, Hassan KHANIANI
  • Patent number: 10929431
    Abstract: Methods and systems for collision handling during an asynchronous replication are provided. A system includes a cache memory system comprising a number of cache memory pages. A collision detector detects when a host is attempting to overwrite a cache memory page that has not been completely replicated. A revision page tagger copies the cache memory page to a free page and tags the copied page as protected.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: February 23, 2021
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Mark Doherty, Siamak Nazari, Jin Wang, Srinivasa D. Murthy, Paul Kinnaird, Pierre Labat, Jonathan Stewart
  • Patent number: 10783021
    Abstract: Examples include transaction management for a multi-node cluster. Some examples include generating a request log entry at an owner node that identifies a duplicate data location, tagging the duplicate data location with a requested tag, and issuing a zero-copy request that identifies the duplicate data location. In some such examples, a service node may generate a service log entry based on the zero-copy request that identifies the duplicate data location, process the zero-copy request, and tag the duplicate data location with a serviced tag. A determination may be made as to whether at least one of the owner node and the service node have failed and based on the determination that at least one has failed, the failed node may be recovered via at least one of the requested tag and the serviced tag of the duplicate data location.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: September 22, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Siamak Nazari, Jin Wang, Jonathan Stewart, Roopesh Kumar Tamma
  • Patent number: 10776033
    Abstract: A port processor to receive a read command in a target port. In response, use the target to process a data transfer that includes use of memory for the read transfer allocated by a storage array controller prior to receipt of the read command by the target port or while processing the data transfer and selectively mark such memory as repurposable. The port processor to receive a write command in the target port. In response to receipt of the write command, use the target to process a data transfer for the initiator associated with the write operation, wherein the process includes use of memory that the storage array controller pre-allocated or allocated based on receipt of the read command by the target port for the transfer to the storage array controller and marked as repurposable.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: September 15, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Siamak Nazari, Roopesh Kumar Tamma, Ajitkumar A Natarajan
  • Patent number: 10489065
    Abstract: Disclosed herein are techniques for managing the performance of a storage system. A subset of a plurality of storage units is associated with a rule that specifies a number of input and output transactions and a number of bits per time unit. The associations are adjusted in accordance with a performance policy and changes in the subset of the plurality of storage units.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: November 26, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Zhaozhong Ni, Siamak Nazari, Doug Cameron, Ming Ma
  • Patent number: 10452274
    Abstract: Example implementations relate to determining lengths of acknowledgment delays for input/output (I/O) commands. In example implementations, a length of an acknowledgment delay for a respective I/O command may be based on cache availability, and activity level of a drive at which the respective I/O command is directed, after the respective I/O command has been executed. Acknowledgments for respective I/O commands may be transmitted after respective periods of time equal to respective lengths of acknowledgment delays have elapsed.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: October 22, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Siamak Nazari, Srinivasa D Murthy, Jin Wang, Ming Ma
  • Publication number: 20190295169
    Abstract: A computer-implemented integrated framework for managing real-time financial trades and risk management is described herein. Quantitative and sentimental parameters of trading market are identified and analyzed. A stock selection module having a deep learning architecture performs future predictions based on the analyzed quantitative and sentimental parameters, wherein the stock selection module comprises. A probability number in percentage is assigned to a trading decision. Based on the assigned probabilities to different trading decisions, entrance and exit signals are provided to a user based on their preferences such as the user's risk tolerance.
    Type: Application
    Filed: March 26, 2019
    Publication date: September 26, 2019
    Inventors: Siamak NAZARI, Hassan KHANIANI
  • Patent number: 10417202
    Abstract: An example storage system may include storage media and a storage controller. The storage controller may be to establish virtual volumes, private data stores, and a deduplication data store, each being a virtual storage space of the storage media, wherein each of the private data stores is associated with one of the virtual volumes and the deduplication data store is shared among the virtual volumes. The storage controller may, in response to receiving input data that is to be stored in a given one of the virtual volumes, determine a signature for the input data and select between storing the input data in the private data store associated with the given one of the virtual volumes and storing the input data in the deduplication data store.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: September 17, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Siamak Nazari, Jin Wang, Srinivasa D. Murthy, Roopesh Kumar Tamma
  • Publication number: 20190188017
    Abstract: A technique includes changing a configuration setting of a virtual volume of data stored in a storage system. The technique includes converting data of the virtual volume in place to reflect the changing of the configuration setting.
    Type: Application
    Filed: October 24, 2017
    Publication date: June 20, 2019
    Inventors: Siamak Nazari, Srinivasa D. Murthy
  • Publication number: 20190138446
    Abstract: Examples include compressed pages having data and compression metadata. Some examples include receiving a write request containing write data, storing the write data in data cache, and applying a page fit process to the write data. In some such examples, a virtual page table entry in a virtual page table may be generated for the processed write data. The virtual page table entry may include a compression index and a page address. An inline compression of the processed write data may be performed to compress and store the processed write data in a compressed page at a location associated with the compression index. In some examples, the compressed page may include a compression metadata having a reference count, a compressed page offset, and a virtual page address.
    Type: Application
    Filed: April 29, 2016
    Publication date: May 9, 2019
    Inventors: Shankar Iyer, Srinivasa D Murthy, Siamak Nazari, Gilad Sade
  • Patent number: 10268543
    Abstract: Examples include repair of a volume while the volume is online. In some examples, a request is received to access a compressed page, wherein the compressed page includes compressed data and compression metadata, an error is identified in the compression metadata or the compressed data, and based on the error and the request, repair of the error is handled while the volume is online.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: April 23, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Siamak Nazari, Jinyang Li, Srinivasa D Murthy, Ying Fairweather, Christopher Robert Sutton
  • Publication number: 20190108122
    Abstract: Examples disclosed herein relate to unmapping sectors of a solid-state drive to initialize the sectors. The sectors include a data portion and a protection portion. In one example, when an unmapped sector is read, the solid-state drive can return a pre-set value for the sector, where the pre-set value includes a known fixed value to represent the protection portion. In one example, a subset of the sectors is unmapped to initialize the subset. In one example, when read, a storage controller can recognize the known fixed value.
    Type: Application
    Filed: April 5, 2016
    Publication date: April 11, 2019
    Inventors: Siamak Nazari, Thomas David Evans, Faris Hindi, Daniel Aaron Harbaugh, Anahita Afkham
  • Patent number: 10241708
    Abstract: Example implementations relate to data chunk storage. For example, an implementation includes an apparatus that includes a processor. The processor is to receive a first data chunk from a source device and to generate a first fingerprint of the first data chunk. In response to a determination that the first fingerprint matches a second fingerprint of a second data chunk, the processor is to select a storage pool from a plurality of storage pools at a storage device to store the first data chunk based on the first data chunk and based on the second data chunk. The plurality of storage pools includes a first storage pool associated with first particular data chunks with non-colliding fingerprints and a second storage pool associated with second particular data chunks with colliding fingerprints.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: March 26, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Jin Wang, Siamak Nazari, Roopesh Kumar Tamma, Srinivasa D Murthy
  • Patent number: 10209906
    Abstract: A technique includes receiving a command in a target port, where the command is provided by an initiator and is associated with a write operation. The technique includes, in response to the command, using the target to process a data transfer for the initiator associated with the write operation. The processing includes, based on a characteristic of the command, selectively using memory for the transfer pre-allocated by a storage array controller prior to receipt of the command by the target port or requesting an allocation of memory for the transfer from the storage array controller.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: February 19, 2019
    Assignee: Hewlett Packard Enterprises Development LP
    Inventors: Roopesh Kumar Tamma, Siamak Nazari, Ajitkumar A. Natarajan
  • Patent number: 10168937
    Abstract: Example implementations relate to storage space allocation. For example, an implementation includes an apparatus including a controller. The controller is to receive an allocation request from a host computing device. The controller is also to reserve a portion of storage space in the storage device via a reservation table based on the allocation request. The controller is further to determine a type of the allocation request. The type of the allocation request includes a space-optimized allocation request and a non-space-optimized allocation request. When the type of the allocation request corresponds to the non-space-optimized allocation request, the controller is to commit the portion of storage space via an allocation table. When the type of the allocation request corresponds to the space-optimized allocation request, the controller is to release the portion of storage space via the reservation table.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: January 1, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Jin Wang, Roopesh Kumar Tamma, Siamak Nazari, Srinivasa D Murthy