Patents by Inventor Tabriz Holtz
Tabriz Holtz 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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Publication number: 20230333947Abstract: Synchronizing metadata among storage systems synchronously replicating a dataset, where synchronizing the metadata includes: receiving, at a first storage system of the storage systems, an I/O operation directed to the dataset; determining, in dependence upon the I/O operation, a metadata update describing a mapping of segments of content to a virtual address within a storage object, wherein the storage object includes the dataset; and synchronizing metadata on a second storage system of the storage systems by sending the metadata update to the second storage system to update a metadata representation on the second storage system in accordance with the metadata update.Type: ApplicationFiled: June 22, 2023Publication date: October 19, 2023Inventors: DAVID GRUNWALD, RONALD KARR, STEVEN HODGSON, TABRIZ HOLTZ
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Patent number: 11687500Abstract: Synchronizing metadata among storage systems synchronously replicating a dataset, where synchronizing the metadata includes: receiving, at a first storage system of the storage systems, an I/O operation directed to the dataset; determining, in dependence upon the I/O operation, a metadata update describing a mapping of segments of content to a virtual address within a storage object, wherein the storage object includes the dataset; and synchronizing metadata on a second storage system of the storage systems by sending the metadata update to the second storage system to update a metadata representation on the second storage system in accordance with the metadata update.Type: GrantFiled: November 3, 2020Date of Patent: June 27, 2023Assignee: PURE STORAGE, INC.Inventors: David Grunwald, Steven Hodgson, Tabriz Holtz, Ronald Karr
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Publication number: 20220091977Abstract: Modifying a synchronously replicated dataset, including: receiving, by a leader storage system, a request to modify a dataset that is synchronized across a plurality of storage systems; sending, from the leader storage system to a follower storage system, information describing the request to modify the dataset, wherein the leader storage system and the follower storage system each store a copy of the dataset; processing, by the leader storage system on the copy of the dataset that is stored on the leader storage system, the request to modify the dataset; receiving, from the follower storage system, an indication that the follower storage system has processed the request to modify the dataset on the copy of the dataset that is stored on the follower storage system; and acknowledging, by the leader storage system, completion of the request to modify the dataset.Type: ApplicationFiled: November 30, 2021Publication date: March 24, 2022Inventors: DAVID GRUNWALD, STEVEN HODGSON, RONALD KARR, TABRIZ HOLTZ, DEEPAK CHAWLA
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Patent number: 11210219Abstract: Servicing I/O operations directed to a dataset that is synchronized across a plurality of storage systems, including: receiving, by a follower storage system, a request to modify the dataset; sending, from the follower storage system to a leader storage system, a logical description of the modification to the dataset; receiving, from the leader storage system, information describing the modification to the dataset; processing, by the follower storage system, the request to modify the dataset; receiving, from the leader storage system, an indication that the leader storage system has processed the request to modify the dataset; and acknowledging, by the follower storage system, completion of the request to modify the dataset.Type: GrantFiled: November 12, 2019Date of Patent: December 28, 2021Assignee: Pure Storage, Inc.Inventors: Deepak Chawla, David Grunwald, Steven Hodgson, Tabriz Holtz, Ronald Karr
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Patent number: 10884993Abstract: Synchronizing metadata among storage systems synchronously replicating a dataset, where synchronizing the metadata includes: receiving, at a first storage system of the storage systems, an I/O operation directed to the dataset; determining, in dependence upon the I/O operation, a metadata update describing a mapping of segments of content to a virtual address within a storage object, wherein the storage object includes the dataset; and synchronizing metadata on a second storage system of the storage systems by sending the metadata update to the second storage system to update a metadata representation on the second storage system in accordance with the metadata update.Type: GrantFiled: December 12, 2017Date of Patent: January 5, 2021Assignee: Pure Storage, Inc.Inventors: David Grunwald, Steven Hodgson, Tabriz Holtz, Ronald Karr
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Patent number: 10521344Abstract: Servicing I/O operations directed to a dataset that is synchronized across a plurality of storage systems, including: receiving, by a follower storage system, a request to modify the dataset; sending, from the follower storage system to a leader storage system, a logical description of the modification to the dataset; receiving, from the leader storage system, information describing the modification to the dataset; processing, by the follower storage system, the request to modify the dataset; receiving, from the leader storage system, an indication that the leader storage system has processed the request to modify the dataset; and acknowledging, by the follower storage system, completion of the request to modify the dataset.Type: GrantFiled: August 8, 2017Date of Patent: December 31, 2019Assignee: Pure Storage, Inc.Inventors: Deepak Chawla, David Grunwald, Steven Hodgson, Tabriz Holtz, Ronald Karr
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Patent number: 9781201Abstract: One or more techniques and/or systems are provided for multicast transport configuration, for multicast transport, and/or for fault policy implementation. In an example, a multicast component may receive a data copy request from an application to copy data to multiple destinations. A scheduler component may create a transport schedule specifying an order with which to facilitate data copy operations across transports, such as heterogeneous transports, to the destinations. A dispatcher component may apply application specified transport modifiers to the data copy operations (e.g., a modification to a quality of service for a transport). The dispatcher component may facilitate the data copy operations and provide operation result information to a policy agent. The policy agent may provide notifications of data copy operation statuses from the operation result information and/or may implement a fault policy (e.g., a retry on a different transport) for a data copy operation that experienced a fault.Type: GrantFiled: October 15, 2014Date of Patent: October 3, 2017Assignee: NetApp Inc.Inventors: Allen E. Tracht, Curtis Anderson, Tabriz Holtz, George Totolos, Jr.
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Patent number: 9720789Abstract: One or more techniques and/or systems are provided for multicast transport configuration, for multicast transport, and/or for fault policy implementation. In an example, a multicast component may receive a data copy request from an application to copy data to multiple destinations. A scheduler component may create a transport schedule specifying an order with which to facilitate data copy operations across transports, such as heterogeneous transports, to the destinations. A dispatcher component may apply application specified transport modifiers to the data copy operations (e.g., a modification to a quality of service for a transport). The dispatcher component may facilitate the data copy operations and provide operation result information to a policy agent. The policy agent may provide notifications of data copy operation statuses from the operation result information and/or may implement a fault policy (e.g., a retry on a different transport) for a data copy operation that experienced a fault.Type: GrantFiled: October 15, 2014Date of Patent: August 1, 2017Assignee: NetApp, Inc.Inventors: Allen E. Tracht, Curtis Anderson, Tabriz Holtz, George Totolos, Jr.
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Patent number: 9639431Abstract: One or more techniques and/or systems are provided for multicast transport configuration, for multicast transport, and/or for fault policy implementation. In an example, a multicast component may receive a data copy request from an application to copy data to multiple destinations. A scheduler component may create a transport schedule specifying an order with which to facilitate data copy operations across transports, such as heterogeneous transports, to the destinations. A dispatcher component may apply application specified transport modifiers to the data copy operations (e.g., a modification to a quality of service for a transport). The dispatcher component may facilitate the data copy operations and provide operation result information to a policy agent. The policy agent may provide notifications of data copy operation statuses from the operation result information and/or may implement a fault policy (e.g., a retry on a different transport) for a data copy operation that experienced a fault.Type: GrantFiled: October 15, 2014Date of Patent: May 2, 2017Assignee: NetApp, Inc.Inventors: Allen E. Tracht, Curtis Anderson, Tabriz Holtz, George Totolos, Jr.
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Patent number: 9389787Abstract: A persistent random-access, byte-addressable storage device may be simulated on a persistent random-access, block-addressable storage device of a storage system configured to enable asynchronous buffered access to information persistently stored on the block-addressable device. Buffered access to the information is provided, in part, by a portion of kernel memory within the storage system allocated as a staging area for the simulated byte-addressable storage device to temporarily store the information destined for persistent storage. One or more asynchronous interfaces may be employed by a user of the simulated byte-addressable device to pass metadata describing the information to a driver of the device, which may process the metadata to copy the information to the staging area. The driver may organize the staging area as one or more regions to facilitate buffering of the information (data) prior to persistent storage on the block-addressable storage device.Type: GrantFiled: May 15, 2014Date of Patent: July 12, 2016Assignee: NetApp, Inc.Inventors: Brian S. McCarthy, Donna M. Duffy, Farshid Eslami Sarab, Tabriz Holtz, Afshin Salek Ardakani
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Patent number: 9372767Abstract: A recovery consumer framework provides for execution of recovery actions by one or more recovery consumers to enable efficient recovery of information (e.g., data and metadata) in a storage system after a failure event (e.g., a power failure). The recovery consumer framework permits concurrent execution of recovery actions so as to reduce recovery time (i.e., duration) for the storage system. The recovery consumer framework may coordinate (e.g., notify) the recovery consumers to serialize execution of the recovery actions by those recovery consumers having a dependency while allowing concurrent execution between recovery consumers having no dependency relationship. Each recovery consumer may register with the framework to associate a dependency on one or more of the other recovery consumers. The dependency association may be represented as a directed graph where each vertex of the graph represents a recovery consumer and each directed edge of the graph represents a dependency. The framework may traverse (i.e.Type: GrantFiled: June 6, 2014Date of Patent: June 21, 2016Assignee: NetApp, Inc.Inventors: Tabriz Holtz, Neha Kapoor, Farshid Eslami Sarab, Afshin Salek Ardakani, Tara Faith Olson, Asif Imtiyaz Pathan, Prahlad Purohit
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Publication number: 20160110263Abstract: One or more techniques and/or systems are provided for multicast transport configuration, for multicast transport, and/or for fault policy implementation. In an example, a multicast component may receive a data copy request from an application to copy data to multiple destinations. A scheduler component may create a transport schedule specifying an order with which to facilitate data copy operations across transports, such as heterogeneous transports, to the destinations. A dispatcher component may apply application specified transport modifiers to the data copy operations (e.g., a modification to a quality of service for a transport). The dispatcher component may facilitate the data copy operations and provide operation result information to a policy agent. The policy agent may provide notifications of data copy operation statuses from the operation result information and/or may implement a fault policy (e.g., a retry on a different transport) for a data copy operation that experienced a fault.Type: ApplicationFiled: October 15, 2014Publication date: April 21, 2016Inventors: Allen E. Tracht, Curtis Anderson, Tabriz Holtz, George Totolos, JR.
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Publication number: 20160110272Abstract: One or more techniques and/or systems are provided for multicast transport configuration, for multicast transport, and/or for fault policy implementation. In an example, a multicast component may receive a data copy request from an application to copy data to multiple destinations. A scheduler component may create a transport schedule specifying an order with which to facilitate data copy operations across transports, such as heterogeneous transports, to the destinations. A dispatcher component may apply application specified transport modifiers to the data copy operations (e.g., a modification to a quality of service for a transport). The dispatcher component may facilitate the data copy operations and provide operation result information to a policy agent. The policy agent may provide notifications of data copy operation statuses from the operation result information and/or may implement a fault policy (e.g., a retry on a different transport) for a data copy operation that experienced a fault.Type: ApplicationFiled: October 15, 2014Publication date: April 21, 2016Inventors: Allen E. Tracht, Curtis Anderson, Tabriz Holtz, George Totolos, JR.
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Publication number: 20160112509Abstract: One or more techniques and/or systems are provided for multicast transport configuration, for multicast transport, and/or for fault policy implementation. In an example, a multicast component may receive a data copy request from an application to copy data to multiple destinations. A scheduler component may create a transport schedule specifying an order with which to facilitate data copy operations across transports, such as heterogeneous transports, to the destinations. A dispatcher component may apply application specified transport modifiers to the data copy operations (e.g., a modification to a quality of service for a transport). The dispatcher component may facilitate the data copy operations and provide operation result information to a policy agent. The policy agent may provide notifications of data copy operation statuses from the operation result information and/or may implement a fault policy (e.g., a retry on a different transport) for a data copy operation that experienced a fault.Type: ApplicationFiled: October 15, 2014Publication date: April 21, 2016Inventors: Allen E. Tracht, Curtis Anderson, Tabriz Holtz, George Totolos, JR.
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Patent number: 9280430Abstract: Methods, systems, and computer program products for providing deferred replication of recovery information at site switchover are disclosed. A computer-implemented method may include receiving a first copy of logged data for storage volumes of a disaster recovery (DR) partner at a remote site from the DR partner, receiving a request to perform a site switchover from the remote site to the local site, receiving a second copy of logged data for the storage volumes from a local high availability (HA) partner in response to the switchover, and recovering the storage volumes locally by applying one or more of the copies of logged data to corresponding mirrored storage volumes at the local site.Type: GrantFiled: May 13, 2014Date of Patent: March 8, 2016Assignee: NetApp, Inc.Inventors: Parag Sarfare, Yong Cho, Tabriz Holtz, Anuja Jaiswal
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Publication number: 20150355985Abstract: A recovery consumer framework provides for execution of recovery actions by one or more recovery consumers to enable efficient recovery of information (e.g., data and metadata) in a storage system after a failure event (e.g., a power failure). The recovery consumer framework permits concurrent execution of recovery actions so as to reduce recovery time (i.e., duration) for the storage system. The recovery consumer framework may coordinate (e.g., notify) the recovery consumers to serialize execution of the recovery actions by those recovery consumers having a dependency while allowing concurrent execution between recovery consumers having no dependency relationship. Each recovery consumer may register with the framework to associate a dependency on one or more of the other recovery consumers. The dependency association may be represented as a directed graph where each vertex of the graph represents a recovery consumer and each directed edge of the graph represents a dependency. The framework may traverse (i.e.Type: ApplicationFiled: June 6, 2014Publication date: December 10, 2015Inventors: Tabriz Holtz, Neha Kapoor, Farshid Eslami Sarab, Afshin Salek Ardakani, Tara Faith Olson, Asif Imtiyaz Pathan, Prahlad Purohit
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Publication number: 20150331766Abstract: Methods, systems, and computer program products for providing deferred replication of recovery information at site switchover are disclosed. A computer-implemented method may include receiving a first copy of logged data for storage volumes of a disaster recovery (DR) partner at a remote site from the DR partner, receiving a request to perform a site switchover from the remote site to the local site, receiving a second copy of logged data for the storage volumes from a local high availability (HA) partner in response to the switchover, and recovering the storage volumes locally by applying one or more of the copies of logged data to corresponding mirrored storage volumes at the local site.Type: ApplicationFiled: May 13, 2014Publication date: November 19, 2015Applicant: NetApp, Inc.Inventors: Parag Sarfare, Yong Cho, Tabriz Holtz, Anuja Jaiswal
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Publication number: 20150331607Abstract: A persistent random-access, byte-addressable storage device may be simulated on a persistent random-access, block-addressable storage device of a storage system configured to enable asynchronous buffered access to information persistently stored on the block-addressable device. Buffered access to the information is provided, in part, by a portion of kernel memory within the storage system allocated as a staging area for the simulated byte-addressable storage device to temporarily store the information destined for persistent storage. One or more asynchronous interfaces may be employed by a user of the simulated byte-addressable device to pass metadata describing the information to a driver of the device, which may process the metadata to copy the information to the staging area. The driver may organize the staging area as one or more regions to facilitate buffering of the information (data) prior to persistent storage on the block-addressable storage device.Type: ApplicationFiled: May 15, 2014Publication date: November 19, 2015Applicant: NetApp, Inc.Inventors: Brian S. McCarthy, Donna M. Duffy, Farshid Eslami Sarab, Tabriz Holtz, Afshin Salek Ardakani
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Publication number: 20150312337Abstract: One or more techniques and/or systems are provided for mirroring a caching log data structure from a primary storage controller to a secondary storage controller over multiple interconnect paths. The secondary storage controller may be configured as a backup or failover storage controller for the primary storage controller in the event the primary storage controller fails. Data and/or metadata describing the data may be mirrored from the primary storage controller to the secondary storage controller over one or more interconnect paths. The caching log data structure may be parsed into a plurality of streams. The streams may be assigned to interconnect paths between the primary storage controller and the secondary storage controller. A data ordering rule is enforced during mirroring of storage information of the streams across the interconnect paths (e.g., the secondary storage controller is to receive data in the order it was sent by respective streams).Type: ApplicationFiled: April 25, 2014Publication date: October 29, 2015Applicant: NetApp Inc.Inventors: Hrishikesh Keremane, Vaiapuri Ramasubramaniam, Rishabh Mittal, Harihara Kadayam, Tabriz Holtz, Afshin Salek Ardakani