Patents by Inventor Rajeev Kulkarni
Rajeev Kulkarni 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: 9436409Abstract: A method includes reading a superblock of a read-only replica of a source virtual volume in a source virtual storage partition associated with a source aggregate of a source storage system at the destination storage system, modifying the superblock of the read-only replica in a memory of the destination storage system, and associating the modified superblock with one or more virtual volume block number(s) configured to be previously associated with the superblock of the read-only replica of the source virtual volume without initiating a destination consistency point (DCP) at the destination storage system to render the destination virtual volume writable. The method also includes modifying a disk group label to reflect an association of the destination storage disk with the writable destination virtual volume, and initiating DCP to ensure that the modified superblock and the modified disk group label are flushed to the destination storage disk.Type: GrantFiled: January 24, 2014Date of Patent: September 6, 2016Assignee: NETAPP, INC.Inventors: Aditya Rajeev Kulkarni, Nagender Somavarapu
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Publication number: 20140143514Abstract: A method includes reading a superblock of a read-only replica of a source virtual volume in a source virtual storage partition associated with a source aggregate of a source storage system at the destination storage system, modifying the superblock of the read-only replica in a memory of the destination storage system, and associating the modified superblock with one or more virtual volume block number(s) configured to be previously associated with the superblock of the read-only replica of the source virtual volume without initiating a destination consistency point (DCP) at the destination storage system to render the destination virtual volume writable. The method also includes modifying a disk group label to reflect an association of the destination storage disk with the writable destination virtual volume, and initiating DCP to ensure that the modified superblock and the modified disk group label are flushed to the destination storage disk.Type: ApplicationFiled: January 24, 2014Publication date: May 22, 2014Applicant: NETAPP, INC.Inventors: Aditya Rajeev Kulkarni, Nagender Somavarapu, II
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Patent number: 8683152Abstract: A method includes reading a superblock of a read-only replica of a source virtual volume in a source virtual storage partition associated with a source aggregate of a source storage system at the destination storage system, modifying the superblock of the read-only replica in a memory of the destination storage system, and associating the modified superblock with one or more virtual volume block number(s) configured to be previously associated with the superblock of the read-only replica of the source virtual volume without initiating a destination consistency point (DCP) at the destination storage system to render the destination virtual volume writable. The method also includes modifying a disk group label to reflect an association of the destination storage disk with the writable destination virtual volume, and initiating the DCP to ensure that the modified superblock and the modified disk group label are flushed to the destination storage disk.Type: GrantFiled: April 26, 2010Date of Patent: March 25, 2014Assignee: Netapp, Inc.Inventors: Aditya Rajeev Kulkarni, Nagender Somavarapu
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Patent number: 8452856Abstract: The techniques introduced here provide a storage server migration that is non-disruptive to client applications. The techniques described here allow the migration of data from a source storage server to a destination storage server without the need for planned downtime typically associated with storage server migration. Using the techniques described here, data migration operations are performed while client applications continue to run and access data from the source storage server. Once data migration operations are complete, all applications and clients are transitioned to the destination storage server without disruption to the client applications.Type: GrantFiled: August 4, 2010Date of Patent: May 28, 2013Assignee: NetApp, Inc.Inventors: Arthur F. Lent, Nagender Somavarapu, Mohammed Nazeem, Aditya Rajeev Kulkarni, Ravikanth Dronamraju
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Patent number: 8285411Abstract: Methods for generating supports (30) for parts (50) produced by solid freeform fabrication (“SFF”) are disclosed. The method includes defining a plurality of layers (L) that make up the part, and for each layer, determining those regions (R) that require support. The method also includes merging the regions for the different layers (L) into one or more common regions that require support, and providing at least one support for each of the one or more common regions. The result is that fewer supports are used as compared to conventional SFF fabrication methods.Type: GrantFiled: September 21, 2011Date of Patent: October 9, 2012Assignee: 3D Systems, Inc.Inventors: Charles W. Hull, Rajeev Kulkarni, Medhi Mojdeh, Hongqing V. Wang, John Corbin West
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Publication number: 20120010741Abstract: Methods for generating supports (30) for parts (50) produced by solid freeform fabrication (“SFF”) are disclosed. The method includes defining a plurality of layers (L) that make up the part, and for each layer, determining those regions (R) that require support. The method also includes merging the regions for the different layers (L) into one or more common regions that require support, and providing at least one support for each of the one or more common regions. The result is that fewer supports are used as compared to conventional SFF fabrication methods.Type: ApplicationFiled: September 21, 2011Publication date: January 12, 2012Inventors: Charles W. Hull, Rajeev Kulkarni, Medhi Mojdeh, Hongqing V. Wang, John Corbin West
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Patent number: 8046097Abstract: Methods for generating supports (30) for parts (50) produced by solid freeform fabrication (“SFF”) are disclosed. The method includes defining a plurality of layers (L) that make up the part, and for each layer, determining those regions (R) that require support. The method also includes merging the regions for the different layers (L) into one or more common regions that require support, and providing at least one support for each of the one or more common regions. The result is that fewer supports are used as compared to conventional SFF fabrication methods.Type: GrantFiled: September 17, 2008Date of Patent: October 25, 2011Assignee: 3D Systems, Inc.Inventors: Charles W. Hull, Rajeev Kulkarni, Medhi Mojdeh, Hongqing V. Wang, John Corbin West
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Publication number: 20110225359Abstract: A method includes reading a superblock of a read-only replica of a source virtual volume in a source virtual storage partition associated with a source aggregate of a source storage system at the destination storage system, modifying the superblock of the read-only replica in a memory of the destination storage system, and associating the modified superblock with one or more virtual volume block number(s) configured to be previously associated with the superblock of the read-only replica of the source virtual volume without initiating a destination consistency point (DCP) at the destination storage system to render the destination virtual volume writable. The method also includes modifying a disk group label to reflect an association of the destination storage disk with the writable destination virtual volume, and initiating the DCP to ensure that the modified superblock and the modified disk group label are flushed to the destination storage disk.Type: ApplicationFiled: April 26, 2010Publication date: September 15, 2011Applicant: NETWORK APPLIANCE, INC.,Inventors: Aditya Rajeev Kulkarni, Nagender Somavarapu
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Publication number: 20090072447Abstract: Methods for generating supports (30) for parts (50) produced by solid freeform fabrication (“SFF”) are disclosed. The method includes defining a plurality of layers (L) that make up the part, and for each layer, determining those regions (R) that require support. The method also includes merging the regions for the different layers (L) into one or more common regions that require support, and providing at least one support for each of the one or more common regions. The result is that fewer supports are used as compared to conventional SFF fabrication methods.Type: ApplicationFiled: September 17, 2008Publication date: March 19, 2009Applicant: 3D Systems, Inc.Inventors: Charles W. Hull, Rajeev Kulkarni, Medhi Mojdeh, Hongqing V. Wang, John Corbin West