Patents by Inventor Komateswar Dhanadevan
Komateswar Dhanadevan 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).
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Patent number: 11599271Abstract: Examples include selectively adjusting I/O Q-connections between an NVMe controller and a storage device in an NVMe system. In some examples, a utilization time of a host port in an NVMe controller is determined. In response to determining that the utilization time of the host port is lower than a host port utilization threshold and a number of I/O Q-connections at the storage device is less than an I/O Q-connection threshold for the storage device, a candidate list of storage devices is created, each storage devices included in the candidate list having an average service time greater than or equal to an average service time of a host port associated with the storage device. For each storage device included in the candidate list, processing time and I/O block size of I/O requests at the storage device is determined and a number of I/O Q-connections at the storage device is selectively adjusted based on the processing time and I/O block size of I/O requests at the storage device.Type: GrantFiled: June 28, 2021Date of Patent: March 7, 2023Assignee: Hewlett Packard Enterprise Development LPInventors: Komateswar Dhanadevan, Shyamsundar Narasimhan
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Patent number: 11579808Abstract: In some examples, fabric driven NVMe subsystem zoning may include receiving, from a non-volatile memory express (NVMe) Name Server (NNS), a zoning specification that includes an indication of a host that is to communicate with a given NVMe subsystem of an NVMe storage domain. Based on the zoning specification, the host may be designated as being permitted to connect to the given NVMe subsystem of the NVMe storage domain. An NVMe connect command may be received from the host. Based on the designation and an analysis of the NVMe connect command, a connection may be established between the given NVMe subsystem of the NVMe storage domain and the host.Type: GrantFiled: May 12, 2021Date of Patent: February 14, 2023Assignee: Hewlett Packard Enterprise Development LPInventors: Asutosh Satapathy, Komateswar Dhanadevan, Krishna Babu Puttagunta, Vivek Agarwal, Rupin T. Mohan, Govind Chandru Rathod
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Patent number: 11487690Abstract: In some examples, universal host and NVMe™ storage domain discovery for NVM Express™ over Fabrics (NVMe-oF™) may include broadcasting location parameters to a host and a plurality of NVMe™ storage domains for discovery of a NVM Express™ over Fabrics (NVMe-oF™) service. Based on host parameters and NVMe™ storage domain parameters received in response to the broadcast location parameters, the host and the NVMe™ storage domains may be respectively registered with the NVMe-oF™ service. A mapping that indicates a specified NVMe™ storage domain that is to communicate with the host may be obtained. Communication may be implemented between the host and the specified NVMe™ storage domain by forwarding the mapping and associated discovery target parameters to the host to implement discovery of the specified NVMe™ storage domain by the host, and connection of the specified NVMe™ storage domain to the host.Type: GrantFiled: June 28, 2019Date of Patent: November 1, 2022Assignee: Hewlett Packard Enterprise Development LPInventors: Krishna Babu Puttagunta, Rupin T. Mohan, Vivek Agarwal, Komateswar Dhanadevan, Dheeraj Sharma, Asutosh Satapathy
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Publication number: 20220261158Abstract: Examples include selectively adjusting I/O Q-connections between an NVMe controller and a storage device in an NVMe system. In some examples, a utilization time of a host port in an NVMe controller is determined. In response to determining that the utilization time of the host port is lower than a host port utilization threshold and a number of I/O Q-connections at the storage device is less than an I/O Q-connection threshold for the storage device, a candidate list of storage devices is created, each storage devices included in the candidate list having an average service time greater than or equal to an average service time of a host port associated with the storage device. For each storage device included in the candidate list, processing time and I/O block size of I/O requests at the storage device is determined and a number of I/O Q-connections at the storage device is selectively adjusted based on the processing time and I/O block size of I/O requests at the storage device.Type: ApplicationFiled: June 28, 2021Publication date: August 18, 2022Inventors: Komateswar Dhanadevan, Shyamsundar Narasimhan
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Patent number: 11341074Abstract: In some examples, universal host and NVMe™ storage domain discovery for NVM Express™ over Fabrics (NVMe-oF™) may include broadcasting location parameters to a host and a plurality of NVMe™ storage domains for discovery of a NVM Express™ over Fabrics (NVMe-oF™) service. Based on host parameters and NVMe™ storage domain parameters received in response to the broadcast location parameters, the host and the NVMe™ storage domains may be respectively registered with the NVMe-oF™ service. A mapping that indicates a specified NVMe™ storage domain that is to communicate with the host may be obtained. Communication may be implemented between the host and the specified NVMe™ storage domain by forwarding the mapping and associated discovery target parameters to the host to implement discovery of the specified NVMe™ storage domain by the host, and connection of the specified NVMe™ storage domain to the host.Type: GrantFiled: June 28, 2019Date of Patent: May 24, 2022Assignee: Hewlett Packard Enterprise Development LPInventors: Krishna Babu Puttagunta, Rupin T. Mohan, Vivek Agarwal, Komateswar Dhanadevan, Dheeraj Sharma, Asutosh Satapathy
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Patent number: 11113001Abstract: In some examples, fabric driven NVMe subsystem zoning may include receiving, from a non-volatile memory express (NVMe) Name Server (NNS), a zoning specification that includes an indication of a host that is to communicate with a given NVMe subsystem of an NVMe storage domain. Based on the zoning specification, the host may be designated as being permitted to connect to the given NVMe subsystem of the NVMe storage domain. An NVMe connect command may be received from the host. Based on the designation and an analysis of the NVMe connect command, a connection may be established between the given NVMe subsystem of the NVMe storage domain and the host.Type: GrantFiled: August 30, 2019Date of Patent: September 7, 2021Assignee: Hewlett Packard Enterprise Development LPInventors: Asutosh Satapathy, Komateswar Dhanadevan, Krishna Babu Puttagunta, Vivek Agarwal, Rupin T. Mohan, Govind Chandru Rathod
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Publication number: 20210263686Abstract: In some examples, fabric driven NVMe subsystem zoning may include receiving, from a non-volatile memory express (NVMe) Name Server (NNS), a zoning specification that includes an indication of a host that is to communicate with a given NVMe subsystem of an NVMe storage domain. Based on the zoning specification, the host may be designated as being permitted to connect to the given NVMe subsystem of the NVMe storage domain. An NVMe connect command may be received from the host. Based on the designation and an analysis of the NVMe connect command, a connection may be established between the given NVMe subsystem of the NVMe storage domain and the host.Type: ApplicationFiled: May 12, 2021Publication date: August 26, 2021Inventors: Asutosh Satapathy, Komateswar Dhanadevan, Krishna Babu Puttagunta, Vivek Agarwal, Rupin T. Mohan, Govind Chandru Rathod
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Publication number: 20210064281Abstract: In some examples, fabric driven NVMe™ subsystem zoning may include receiving, from a non-volatile memory express (NVMe™) Name Server (NNS), a zoning specification that includes an indication of a host that is to communicate with a given NVMe™ subsystem of an NVMe™ storage domain. Based on the zoning specification, the host may be designated as being permitted to connect to the given NVMe™ subsystem of the NVMe™ storage domain. An NVMe™ connect command may be received from the host. Based on the designation and an analysis of the NVMe™ connect command, a connection may be established between the given NVMe™ subsystem of the NVMe™ storage domain and the host.Type: ApplicationFiled: August 30, 2019Publication date: March 4, 2021Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LPInventors: Asutosh SATAPATHY, Komateswar Dhanadevan, Krishina Babu Puttagunta, Vivek Agarwal, Rupin T. Mohan, Govind Chandru Rathod
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Publication number: 20200409893Abstract: In some examples, universal host and NVMe™ storage domain discovery for NVM Express™ over Fabrics (NVMe-oF™) may include broadcasting location parameters to a host and a plurality of NVMe™ storage domains for discovery of a NVM Express™ over Fabrics (NVMe-oF™) service. Based on host parameters and NVMe™ storage domain parameters received in response to the broadcast location parameters, the host and the NVMe™ storage domains may be respectively registered with the NVMe-oF™ service. A mapping that indicates a specified NVMe™ storage domain that is to communicate with the host may be obtained. Communication may be implemented between the host and the specified NVMe™ storage domain by forwarding the mapping and associated discovery target parameters to the host to implement discovery of the specified NVMe™ storage domain by the host, and connection of the specified NVMe™ storage domain to the host.Type: ApplicationFiled: June 28, 2019Publication date: December 31, 2020Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LPInventors: Krishna Babu PUTTAGUNTA, Rupin T. Mohan, Vivek Agarwal, Komateswar Dhanadevan, Dheeraj Sharma, Asutosh Satapathy
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Patent number: 10708140Abstract: Examples disclosed herein relate to automatically updating of zoning information in a SAN. In an example, a network switching device in a SAN may automatically detect a new HBA port at a port where a prior HBA port was coupled. In response to detecting, network switching device may automatically determine a zone that the prior HBA port belonged to, from a map database on network switching device that stores mapping information comprising an ID of the prior HBA port, an ID of the port, a zone name associated with the ID of the port, and a status of the zone. In response to determining, network switching device may automatically update zoning information on network switching device to replace the ID of the prior HBA port with an ID of the new HBA port, for the zone that the prior HBA port belonged to.Type: GrantFiled: April 16, 2018Date of Patent: July 7, 2020Assignee: Hewlett Packard Enterprise Development LPInventors: Komateswar Dhanadevan, Harish Chapalamadugu
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Publication number: 20190319846Abstract: Examples disclosed herein relate to automatically updating of zoning information in a SAN. In an example, a network switching device in a SAN may automatically detect a new HBA port at a port where a prior HBA port was coupled. In response to detecting, network switching device may automatically determine a zone that the prior HBA port belonged to, from a map database on network switching device that stores mapping information comprising an ID of the prior HBA port, an ID of the port, a zone name associated with the ID of the port, and a status of the zone. In response to determining, network switching device may automatically update zoning information on network switching device to replace the ID of the prior HBA port with an ID of the new HBA port, for the zone that the prior HBA port belonged to.Type: ApplicationFiled: April 16, 2018Publication date: October 17, 2019Inventors: Komateswar Dhanadevan, Harish Chapalamadugu
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Patent number: 10348519Abstract: Approaches for aggregating ports of switch connected to ports of a target node, are described. In one example, for a fiber channel exchange received from a host node, for a target node a plurality of target node ports of the target node associated with the virtual port are determined. The fiber channel exchange comprises a sequence of frame. Once the plurality of target node ports are determined, a first frame is directed to one target node port selected from the plurality of the target node ports, where the one target node port is selected based port selection criteria. Based on the directing of the first frame, subsequent frames of the fiber channel exchange to the selected one target node port are also directed.Type: GrantFiled: November 20, 2014Date of Patent: July 9, 2019Assignee: Hewlett Packard Enterprise Development LPInventors: Komateswar Dhanadevan, Navaruparajah Nadarajah, Rajesh Nadubail, Harsha Basavarajappa, Renjith P George
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Publication number: 20180246659Abstract: Examples disclosed herein relate to migration of data blocks. In an example, data blocks for migration from a source data storage device to a destination data storage device may be identified. A migration priority for each of the data blocks may be determined. The determination may comprise determining a plurality of parameters for each of the data blocks based on an analysis of respective input/output (I/O) operations of the data blocks in relation to a host system. The plurality of parameters may be provided as an input to an input layer of an artificial neural network engine. The input may be processed by a hidden layer of the artificial neural network engine. An output may be provided by an output layer of the artificial neural network engine. In an example, the output may include a migration priority for each of the data blocks.Type: ApplicationFiled: February 28, 2017Publication date: August 30, 2018Inventors: Vivek Agarwal, Komateswar Dhanadevan, Rupin T. Mohan, Douglas L. Voigt
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Publication number: 20170338977Abstract: Approaches for aggregating ports of switch connected to ports of a target node, are described. In one example, for a fibre channel exchange received from a host node, for a target node a plurality of target node ports of the target node associated with the virtual port are determined. The fibre channel exchange comprises a sequence of frame. Once the plurality of target node ports are determined, a first frame is directed to one target node port selected from the plurality of the target node ports, where the one target node port is selected based port selection criteria. Based on the directing of the first frame, subsequent frames of the fibre channel exchange to the selected one target node port are also directed.Type: ApplicationFiled: November 20, 2014Publication date: November 23, 2017Inventors: Komateswar Dhanadevan, Navaruparajah Nadarajah, Rajesh Nadubail, Harsha Basavarajappa, Renjith P George
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Publication number: 20060106819Abstract: A method and apparatus is disclosed for managing a Storage Area Network (SAN) in which testing of a SAN configuration and selection of suitable test cases is carried out automatically. The system is also able to search a SAN configuration to determine the particular element or region of a SAN responsible for a detected fault.Type: ApplicationFiled: October 28, 2004Publication date: May 18, 2006Inventors: Komateswar Dhanadevan, Satish Mopur