Patents by Inventor Viswanath Chandrasekara Bharathi
Viswanath Chandrasekara Bharathi 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: 11740826Abstract: A storage management computing device obtains an information lifecycle management (ILM) policy. A data protection scheme to be applied at a storage node computing device level is determined and a plurality of storage node computing devices are identified based on an application of the ILM policy to metadata received from one of the storage node computing devices and associated with an object ingested by the one of the storage node computing devices. The one of the storage node computing devices is instructed to generate one or more copies of the object or fragments of the object according to the data protection scheme and to distribute the object copies or one of the object fragments to one or more other of the storage node computing devices to be stored by at least the one or more other storage node computing devices on one or more disk storage devices.Type: GrantFiled: March 31, 2022Date of Patent: August 29, 2023Assignee: NETAPP, INC.Inventors: Ajay Bakre, Vishnu Vardhan Chandra Kumaran, Alvin Lam, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi, Vladimir Avram, Dheeraj Raghavender Sangamkar, Oliver Seiler, Carmen Lum
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Patent number: 11657025Abstract: Example storage systems and methods provide data storage management using parallel processing of filtered transaction logs. Transaction logs are comprised of log entries corresponding to storage operations for at least one storage node. Sets of log entries are sequentially retrieved from the transaction log and filtered through multiple transaction log filters to generate multiple subsets of the log entries. Different metadata operations are executed in parallel using the different filtered subsets of log entries.Type: GrantFiled: March 24, 2020Date of Patent: May 23, 2023Assignee: Western Digital Technologies, Inc.Inventors: Thomas Demoor, Satish Kumar Chakka, Viswanath Chandrasekara Bharathi
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Patent number: 11442827Abstract: A storage management computing device obtains an information lifecycle management (ILM) policy. A data protection scheme to be applied at a storage node computing device level is determined and a plurality of storage node computing devices are identified based on an application of the ILM policy to metadata received from one of the storage node computing devices and associated with an object ingested by the one of the storage node computing devices. The one of the storage node computing devices is instructed to generate one or more copies of the object or fragments of the object according to the data protection scheme and to distribute the object copies or one of the object fragments to one or more other of the storage node computing devices to be stored by at least the one or more other storage node computing devices on one or more disk storage devices.Type: GrantFiled: May 19, 2020Date of Patent: September 13, 2022Assignee: NETAPP, INC.Inventors: Ajay Bakre, Vishnu Vardhan Chandra Kumaran, Alvin Lam, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi, Vladimir Avram, Dheeraj Raghavender Sangamkar, Oliver Seiler, Carmen Lum
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Publication number: 20220222157Abstract: A storage management computing device obtains an information lifecycle management (ILM) policy. A data protection scheme to be applied at a storage node computing device level is determined and a plurality of storage node computing devices are identified based on an application of the ILM policy to metadata received from one of the storage node computing devices and associated with an object ingested by the one of the storage node computing devices. The one of the storage node computing devices is instructed to generate one or more copies of the object or fragments of the object according to the data protection scheme and to distribute the object copies or one of the object fragments to one or more other of the storage node computing devices to be stored by at least the one or more other storage node computing devices on one or more disk storage devices.Type: ApplicationFiled: March 31, 2022Publication date: July 14, 2022Inventors: Ajay Bakre, Vishnu Vardhan Chandra Kumaran, Alvin Lam, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi, Vladimir Avram, Dheeraj Raghavender Sangamkar, Oliver Seiler, Carmen Lum
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Patent number: 11023340Abstract: Technology is disclosed for storing data in a distributed storage system using a virtual chunk service (VCS). In the VCS based storage technique, a storage node (“node”) is split into multiple VCSs and each of the VCSs can be assigned a unique ID in the distributed storage. A set of VCSs from a set of nodes form a storage group, which also can be assigned a unique ID in the distributed storage. When a data object is received for storage, a storage group is identified for the data object, the data object is encoded to generate multiple fragments and each fragment is stored in a VCS of the identified storage group. The data recovery process is made more efficient by using metadata, e.g., VCS to storage node mapping, storage group to VCS mapping, VCS to objects mapping, which eliminates resource intensive read and write operations during recovery.Type: GrantFiled: October 28, 2019Date of Patent: June 1, 2021Assignee: NETAPP, INC.Inventors: Dheeraj Raghavender Sangamkar, Ajay Bakre, Vladimir Radu Avram, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi
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Publication number: 20200401562Abstract: Example storage systems and methods provide data storage management using parallel processing of filtered transaction logs. Transaction logs are comprised of log entries corresponding to storage operations for at least one storage node. Sets of log entries are sequentially retrieved from the transaction log and filtered through multiple transaction log filters to generate multiple subsets of the log entries. Different metadata operations are executed in parallel using the different filtered subsets of log entries.Type: ApplicationFiled: March 24, 2020Publication date: December 24, 2020Inventors: Thomas Demoor, Satish Kumar Chakka, Viswanath Chandrasekara Bharathi
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Publication number: 20200278913Abstract: A storage management computing device obtains an information lifecycle management (ILM) policy. A data protection scheme to be applied at a storage node computing device level is determined and a plurality of storage node computing devices are identified based on an application of the ILM policy to metadata received from one of the storage node computing devices and associated with an object ingested by the one of the storage node computing devices. The one of the storage node computing devices is instructed to generate one or more copies of the object or fragments of the object according to the data protection scheme and to distribute the object copies or one of the object fragments to one or more other of the storage node computing devices to be stored by at least the one or more other storage node computing devices on one or more disk storage devices.Type: ApplicationFiled: May 19, 2020Publication date: September 3, 2020Inventors: Ajay Bakre, Vishnu Vardhan Chandra Kumaran, Alvin Lam, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi, Vladimir Avram, Dheeraj Raghavender Sangamkar, Oliver Seiler, Carmen Lum
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Patent number: 10691366Abstract: A storage management computing device obtains an information lifecycle management (ILM) policy based on a query from a storage node ingesting an object into a distributed storage system. A hierarchical data protection plan comprising protection schemes at different layers of the distributed storage system is determined. A data protection scheme to be applied at a storage node computing device level is determined and a plurality of storage node computing devices are identified based on the hierarchical data protection plan. The storage management computing device instructs the ingesting storage node to store the object into the distributed storage system according to the hierarchical data protection plan.Type: GrantFiled: June 8, 2018Date of Patent: June 23, 2020Assignee: NETAPP, INC.Inventors: Ajay Bakre, Vishnu Vardhan Chandra Kumaran, Alvin Lam, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi, Vladimir Avram, Dheeraj Raghavender Sangamkar, Oliver Seiler, Carmen Lum
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Publication number: 20200057701Abstract: Technology is disclosed for storing data in a distributed storage system using a virtual chunk service (VCS). In the VCS based storage technique, a storage node (“node”) is split into multiple VCSs and each of the VCSs can be assigned a unique ID in the distributed storage. A set of VCSs from a set of nodes form a storage group, which also can be assigned a unique ID in the distributed storage. When a data object is received for storage, a storage group is identified for the data object, the data object is encoded to generate multiple fragments and each fragment is stored in a VCS of the identified storage group. The data recovery process is made more efficient by using metadata, e.g., VCS to storage node mapping, storage group to VCS mapping, VCS to objects mapping, which eliminates resource intensive read and write operations during recovery.Type: ApplicationFiled: October 28, 2019Publication date: February 20, 2020Inventors: Dheeraj Raghavender Sangamkar, Ajay Bakre, Vladimir Radu Avram, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi
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Patent number: 10489210Abstract: Technology is disclosed for storing data in a distributed storage system using a virtual chunk service (VCS). In the VCS based storage technique, a storage node (“node”) is split into multiple VCSs and each of the VCSs can be assigned a unique ID in the distributed storage. A set of VCSs from a set of nodes form a storage group, which also can be assigned a unique ID in the distributed storage. When a data object is received for storage, a storage group is identified for the data object, the data object is encoded to generate multiple fragments and each fragment is stored in a VCS of the identified storage group. The data recovery process is made more efficient by using metadata, e.g., VCS to storage node mapping, storage group to VCS mapping, VCS to objects mapping, which eliminates resource intensive read and write operations during recovery.Type: GrantFiled: December 5, 2018Date of Patent: November 26, 2019Assignee: NETAPP, INC.Inventors: Dheeraj Raghavender Sangamkar, Ajay Bakre, Vladimir Radu Avram, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi
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Publication number: 20190205209Abstract: Technology is disclosed for storing data in a distributed storage system using a virtual chunk service (VCS). In the VCS based storage technique, a storage node (“node”) is split into multiple VCSs and each of the VCSs can be assigned a unique ID in the distributed storage. A set of VCSs from a set of nodes form a storage group, which also can be assigned a unique ID in the distributed storage. When a data object is received for storage, a storage group is identified for the data object, the data object is encoded to generate multiple fragments and each fragment is stored in a VCS of the identified storage group. The data recovery process is made more efficient by using metadata, e.g., VCS to storage node mapping, storage group to VCS mapping, VCS to objects mapping, which eliminates resource intensive read and write operations during recovery.Type: ApplicationFiled: December 5, 2018Publication date: July 4, 2019Inventors: Dheeraj Raghavender Sangamkar, Ajay Bakre, Vladimir Radu Avram, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi
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Patent number: 10152377Abstract: Technology is disclosed for storing data in a distributed storage system using a virtual chunk service (VCS). In the VCS based storage technique, a storage node (“node”) is split into multiple VCSs and each of the VCSs can be assigned a unique ID in the distributed storage. A set of VCSs from a set of nodes form a storage group, which also can be assigned a unique ID in the distributed storage. When a data object is received for storage, a storage group is identified for the data object, the data object is encoded to generate multiple fragments and each fragment is stored in a VCS of the identified storage group. The data recovery process is made more efficient by using metadata, e.g., VCS to storage node mapping, storage group to VCS mapping, VCS to objects mapping, which eliminates resource intensive read and write operations during recovery.Type: GrantFiled: February 7, 2018Date of Patent: December 11, 2018Assignee: NetApp, Inc.Inventors: Dheeraj Raghavender Sangamkar, Ajay Bakre, Vladimir Radu Avram, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi
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Publication number: 20180293018Abstract: A storage management computing device obtains an information lifecycle management (ILM) policy based on a query from a storage node ingesting an object into a distributed storage system. A hierarchical data protection plan comprising protection schemes at different layers of the distributed storage system is determined. A data protection scheme to be applied at a storage node computing device level is determined and a plurality of storage node computing devices are identified based on the hierarchical data protection plan. The storage management computing device instructs the ingesting storage node to store the object into the distributed storage system according to the hierarchical data protection plan.Type: ApplicationFiled: June 8, 2018Publication date: October 11, 2018Inventors: Ajay Bakre, Vishnu Vardhan Chandra Kumaran, Alvin Lam, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi, Vladimir Avram, Dheeraj Raghavender Sangamkar, Oliver Seiler, Carmen Lum
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Patent number: 10019192Abstract: A storage management computing device obtains an information lifecycle management (ILM) policy. A data protection scheme to be applied at a storage node computing device level is determined and a plurality of storage node computing devices are identified based on an application of the ILM policy to metadata received from one of the storage node computing devices and associated with an object ingested by the one of the storage node computing devices. The one of the storage node computing devices is instructed to generate one or more copies of the object or fragments of the object according to the data protection scheme and to distribute the object copies or one of the object fragments to one or more other of the storage node computing devices to be stored by at least the one or more other storage node computing devices on one or more disk storage devices.Type: GrantFiled: January 23, 2017Date of Patent: July 10, 2018Assignee: NetApp, Inc.Inventors: Ajay Bakre, Vishnu Vardhan Chandra Kumaran, Alvin Lam, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi, Vladimir Avram, Dheeraj Raghavender Sangamkar, Oliver Seiler, Carmen Lum
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Publication number: 20180165155Abstract: Technology is disclosed for storing data in a distributed storage system using a virtual chunk service (VCS). In the VCS based storage technique, a storage node (“node”) is split into multiple VCSs and each of the VCSs can be assigned a unique ID in the distributed storage. A set of VCSs from a set of nodes form a storage group, which also can be assigned a unique ID in the distributed storage. When a data object is received for storage, a storage group is identified for the data object, the data object is encoded to generate multiple fragments and each fragment is stored in a VCS of the identified storage group. The data recovery process is made more efficient by using metadata, e.g., VCS to storage node mapping, storage group to VCS mapping, VCS to objects mapping, which eliminates resource intensive read and write operations during recovery.Type: ApplicationFiled: February 7, 2018Publication date: June 14, 2018Inventors: Dheeraj Raghavender Sangamkar, Ajay Bakre, Vladimir Radu Avram, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi
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Patent number: 9921910Abstract: Technology is disclosed for storing data in a distributed storage system using a virtual chunk service (VCS). In the VCS based storage technique, a storage node (“node”) is split into multiple VCSs and each of the VCSs can be assigned a unique ID in the distributed storage. A set of VCSs from a set of nodes form a storage group, which also can be assigned a unique ID in the distributed storage. When a data object is received for storage, a storage group is identified for the data object, the data object is encoded to generate multiple fragments and each fragment is stored in a VCS of the identified storage group. The data recovery process is made more efficient by using metadata, e.g., VCS to storage node mapping, storage group to VCS mapping, VCS to objects mapping, which eliminates resource intensive read and write operations during recovery.Type: GrantFiled: April 24, 2015Date of Patent: March 20, 2018Assignee: NetApp, Inc.Inventors: Dheeraj Raghavender Sangamkar, Ajay Bakre, Vladimir Radu Avram, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi
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Publication number: 20170161148Abstract: Techniques are disclosed for detection of loss or corruption among data chunks (i.e. silent data loss) corresponding to an object stored in an erasure-coded storage system. In one embodiment, one of the data chunks stored in a storage node is selected for integrity verification. The storage node computes a current checksum for the selected data chunk. The integrity of the data chunk is determined based upon a comparison of the current checksum for the data chunk with a stored checksum for the data chunk. In response to the checksums differing, the storage node requests recovery of the data chunk from the erasure-coded storage system. The data chunk is stored by the storage node if the data chunk is recovered.Type: ApplicationFiled: September 23, 2016Publication date: June 8, 2017Inventors: Emalayan Vairavanathan, Dheeraj Raghavender Sangamkar, Viswanath Chandrasekara Bharathi
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Patent number: 9665428Abstract: A method, non-transitory computer readable medium, and storage management computing device that assists with distributing erasure coded fragments in geo-distributed storage nodes includes receiving an object and a storage reliability requirement from a client computing device. Erasure coding is performed on the received object using an erasure coding scheme. An erasure coding group from a plurality of erasure coding groups present in a plurality of geographically distributed storage nodes is determined based on the received storage reliability requirement and the erasure coding scheme. The erasure coded object is distributed to the determined erasure coding group from the plurality of erasure coding groups in the plurality of geographically distributed storage nodes.Type: GrantFiled: February 5, 2015Date of Patent: May 30, 2017Assignee: NetApp, Inc.Inventors: Emalayan Vairavanathan, Dheeraj Sangamkar, Ajay Bakre, Vladimir Avram, Viswanath Chandrasekara Bharathi
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Publication number: 20170139640Abstract: A storage management computing device obtains an information lifecycle management (ILM) policy. A data protection scheme to be applied at a storage node computing device level is determined and a plurality of storage node computing devices are identified based on an application of the ILM policy to metadata received from one of the storage node computing devices and associated with an object ingested by the one of the storage node computing devices. The one of the storage node computing devices is instructed to generate one or more copies of the object or fragments of the object according to the data protection scheme and to distribute the object copies or one of the object fragments to one or more other of the storage node computing devices to be stored by at least the one or more other storage node computing devices on one or more disk storage devices.Type: ApplicationFiled: January 23, 2017Publication date: May 18, 2017Inventors: Ajay Bakre, Vishnu Vardhan Chandra Kumaran, Alvin Lam, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi, Vladimir Avram, Dheeraj Raghavender Sangamkar, Oliver Seiler, Carmen Lum
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Patent number: 9626245Abstract: A method, non-transitory computer readable medium, and storage management computing device that obtains an information lifecycle management (ILM) policy. A data protection scheme to be applied at a storage node computing device level is determined and a plurality of storage node computing devices are identified based on an application of the ILM policy to metadata received from one of the storage node computing devices and associated with an object ingested by the one of the storage node computing devices. The one of the storage node computing devices is instructed to generate one or more copies of the object or fragments of the object according to the data protection scheme and to distribute the object copies or one of the object fragments to one or more other of the storage node computing devices to be stored by at least the one or more other storage node computing devices on one or more disk storage devices.Type: GrantFiled: February 20, 2015Date of Patent: April 18, 2017Assignee: NetApp, Inc.Inventors: Ajay Bakre, Vishnu Vardhan Chandra Kumaran, Alvin Lam, Emalayan Vairavanathan, Viswanath Chandrasekara Bharathi, Vladimir Avram, Dheeraj Raghavender Sangamkar, Oliver Seiler, Carmen Lum