Patents by Inventor Mathieu Gagne
Mathieu Gagne 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: 6901480Abstract: A method and apparatus for enabling an on-line reconfiguration of striped data in a disk array storage device. A replicated copy of the striped logical device is made in parallel with host operations. A logical device with a new configuration is then substituted for access by the host application even before any data is transferred to locations within the newly configured logical device. Independent processes operating in this disk array storage device reconfigure the data transparently to any host operations while accommodating host I/O requests directed to locations in the new configuration.Type: GrantFiled: February 12, 2004Date of Patent: May 31, 2005Assignee: EMC CorporationInventors: Arieh Don, Mathieu Gagne, Kenneth Halligan, Ishay Kedem, Hana Moreshet, Alexandr Veprinsky, Natan Vishlitzky, Aviram Cohen
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Patent number: 6868506Abstract: A method and apparatus for data recovery in a system involving a first data store acting as a standard device and a physical moving mirror data store that operates as moving mirror with a first mode to be synchronized and in a second, isolated mode. In response to a command to establish a third or protected restore operating mode, the data to be transferred in response to that command is identified. A restoration procedure copies data from the second data store to the first store to recover any data that may have been corrupted in the second data store. An update procedure acts on the restored data concurrently with the restoration procedure.Type: GrantFiled: March 12, 2004Date of Patent: March 15, 2005Assignee: EMC CorporationInventors: Mathieu Gagne, Haim Kopylovitz, Ishay Kedem
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Publication number: 20040193660Abstract: A data storage facility for transferring data from a data altering apparatus, such as a production data processing site to a remote data receiving site. The data storage facility includes a first data store for recording each change in the data generated by the data altering apparatus. A register set records each change on a track-by-track basis. A second data store has first and second operating modes. During a first operating mode the second data store becomes a mirror of the first data store. During a second operating mode the second data store ceases to act as a mirror and becomes a source for a transfer of data to the data receiving site. Only information that has been altered, i.e., specific tracks that have been altered, are transferred during successive operations in the second operating mode. Commands from the local production site initiate the transfers between the first and second operating modes.Type: ApplicationFiled: January 6, 2004Publication date: September 30, 2004Inventors: Mathieu Gagne, Yuval Ofek
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Publication number: 20040193950Abstract: A method and apparatus for data recovery in a system involving a first data store acting as a standard device and a physical moving mirror data store that operates as moving mirror with a first mode to be synchronized and in a second, isolated mode. In response to a command to establish a third or protected restore operating mode, the data to be transferred in response to that command is identified. A restoration procedure copies data from the second data store to the first store to recover any data that may have been corrupted in the second data store. An update procedure acts on the restored data concurrently with the restoration procedure.Type: ApplicationFiled: March 12, 2004Publication date: September 30, 2004Inventors: Mathieu Gagne, Haim Kopylovitz, Ishay Kedem
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Publication number: 20040162957Abstract: A method and apparatus for enabling an on-line reconfiguration of striped data in a disk array storage device. A replicated copy of the striped logical device is made in parallel with host operations. A logical device with a new configuration is then substituted for access by the host application even before any data is transferred to locations within the newly configured logical device. Independent processes operating in this disk array storage device reconfigure the data transparently to any host operations while accommodating host I/O requests directed to locations in the new configuration.Type: ApplicationFiled: February 12, 2004Publication date: August 19, 2004Inventors: Arieh Don, Mathieu Gagne, Kenneth Halligan, Ishay Kedem, Hana Moreshet, Alexandr Veprinsky, Natan Vishlitzky, Aviram Cohen
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Patent number: 6742138Abstract: A method and apparatus for data recovery in a system involving a first data store acting as a standard device and a physical moving mirror data store that operates as moving mirror with a first mode to be synchronized and in a second, isolated mode. In response to a command to establish a third or protected restore operating mode, the data to be transferred in response to that command is identified. A restoration procedure copies data from the second data store to the first store to recover any data that may have been corrupted in the second data store. An update procedure acts on the restored data concurrently with the restoration procedure.Type: GrantFiled: June 12, 2001Date of Patent: May 25, 2004Assignee: EMC CorporationInventors: Mathieu Gagne, Haim Kopylovitz, Ishay Kedem
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Patent number: 6718437Abstract: A method and apparatus for enabling an on-line reconfiguration of striped data in a disk array storage device. A replicated copy of the striped logical device is made in parallel with host operations. A logical device with a new configuration is then substituted for access by the host application even before any data is transferred to locations within the newly configured logical device. Independent processes operating in this disk array storage device reconfigure the data transparently to any host operations while accommodating host I/O requests directed to locations in the new configuration.Type: GrantFiled: March 27, 2003Date of Patent: April 6, 2004Assignee: EMC CorporationInventors: Arieh Don, Mathieu Gagne, Kenneth Halligan, Ishay Kedem, Hana Moreshet, Alexandr Veprinsky, Natan Vishlitzky, Aviram Cohen
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Patent number: 6687718Abstract: A data storage facility for transferring data from a data altering apparatus, such as a production data processing site to a remote data receiving site. The data storage facility includes a first data store for recording each change in the data generated by the data altering apparatus. A register set records each change on a track-by-track basis. A second data store has first and second operating modes. During a first operating mode the second data store becomes a mirror of the first data store. During a second operating mode the second data store ceases to act as a mirror and becomes a source for a transfer of data to the data receiving site. Only information that has been altered, i.e., specific tracks that have been altered, are transferred during successive operations in the second operating mode. Commands from the local production site initiate the transfers between the first and second operating modes.Type: GrantFiled: December 19, 2000Date of Patent: February 3, 2004Assignee: EMC CorporationInventors: Mathieu Gagne, Yuval Ofek
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Publication number: 20030182505Abstract: A method and apparatus for enabling an on-line reconfiguration of striped data in a disk array storage device. A replicated copy of the striped logical device is made in parallel with host operations. A logical device with a new configuration is then substituted for access by the host application even before any data is transferred to locations within the newly configured logical device. Independent processes operating in this disk array storage device reconfigure the data transparently to any host operations while accommodating host I/O requests directed to locations in the new configuration.Type: ApplicationFiled: March 27, 2003Publication date: September 25, 2003Inventors: Arieh Don, Mathieu Gagne, Kenneth Halligan, Ishay Kedem, Hana Moreshet, Alexandr Veprinsky, Natan Vishlitzky, Aviram Cohen
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Patent number: 6581143Abstract: A data storage facility that allows data on a standard device to be replicated to other storage devices for independent and concurrent access. The standard device includes first and second tables for monitoring the operation of the standard device. The other storage device that receive the copies have tables that identify their status. The system utilizes these tables in various combinations to enable multiple copies to be altered and updated.Type: GrantFiled: May 9, 2002Date of Patent: June 17, 2003Assignee: EMC CorporationInventors: Mathieu Gagne, Yuval Ofek
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Patent number: 6546457Abstract: A method and apparatus for enabling an on-line reconfiguration of striped data in a disk array storage device. A replicated copy of the striped logical device is made in parallel with host operations. A logical device with a new configuration is then substituted for access by the host application even before any data is transferred to locations within the newly configured logical device. Independent processes operating in this disk array storage device reconfigure the data transparently to any host operations while accommodating host I/O requests directed to locations in the new configuration.Type: GrantFiled: September 29, 2000Date of Patent: April 8, 2003Assignee: EMC CorporationInventors: Arieh Don, Mathieu Gagne, Kenneth Halligan, Ishay Kedem, Hana Moreshet, Alexandr Veprinsky, Natan Vishlitzky, Aviram Cohen
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Patent number: 6542974Abstract: A method and apparatus for enabling a common data set to be utilized by multiple data processes. During a first operating mode, first and second data stores in a data storage facility with a common buffer attach to a first data process and act as mirrors. Data to be written transfers to the common buffer and then to the data stores. A second command produces a split whereby the first data store remains attached to the first data process and the second data store is available to the second data process. After the second command is executed, any data in the common buffer is transferred to the corresponding data stores in parallel with and transparently to the actions between the first and second data processes and the first and second data stores, respectively.Type: GrantFiled: April 8, 2002Date of Patent: April 1, 2003Assignee: EMC CorporationInventors: Mathieu Gagne, Haim Kopylovitz, Yuval Ofek, Natan Vishlitzky
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Publication number: 20020129203Abstract: A data storage facility that allows data on a standard device to be replicated to other storage devices for independent and concurrent access. The standard device includes first and second tables for monitoring the operation of the standard device. The other storage device that receive the copies have tables that identify their status. The system utilizes these tables in various combinations to enable multiple copies to be altered and updated.Type: ApplicationFiled: May 9, 2002Publication date: September 12, 2002Inventors: Mathieu Gagne, Yuval Ofek
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Publication number: 20020120605Abstract: A method and apparatus for data recovery in a system involving a first data store acting as a standard volume and a physical moving mirror data store that operates in a first mode to be synchronized and in a second, isolated mode. A third physical mirror data store synchronizes with the second data store in its second operating mode. In response to a command to establish a third or reverse split operating mode, the data to be transferred in response to that command is identified. Copying of the identified data then commences from the third data store to the second data store to recover any data that may have been corrupted in the second data store.Type: ApplicationFiled: February 28, 2001Publication date: August 29, 2002Inventor: Mathieu Gagne
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Publication number: 20020112133Abstract: A method and apparatus for enabling a common data set to be utilized by multiple data processes. During a first operating mode, first and second data stores in a data storage facility with a common buffer attach to a first data process and act as mirrors. Data to be written transfers to the common buffer and then to the data stores. A second command produces a split whereby the first data store remains attached to the first data process and the second data store is available to the second data process. After the second command is executed, any data in the common buffer is transferred to the corresponding data stores in parallel with and transparently to the actions between the first and second data processes and the first and second data stores, respectively.Type: ApplicationFiled: April 8, 2002Publication date: August 15, 2002Inventors: Mathieu Gagne, Haim Kopylovitz, Yuval Ofek, Natan Vishlitzky
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Patent number: 6401178Abstract: A data storage facility that allows data on a standard device to be replicated to other storage devices for independent and concurrent access. The standard device includes first and second tables for monitoring the operation of the standard device. The other storage device that receive the copies have tables that identify their status. The system utilizes these tables in various combinations to enable multiple copies to be altered and updated.Type: GrantFiled: December 23, 1999Date of Patent: June 4, 2002Assignee: EMC CorporatiionInventors: Mathieu Gagne, Yuval Ofek
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Patent number: 6397308Abstract: Method and apparatus for generating partial backups of logical objects in a computer storage system are disclosed. Changed data blocks are identified and stored as differential abstract block sets. The differential abstract block set may include data blocks in any order and metadata identifying the relative position of the data block in the logical object. The invention includes methods for formatting updated backups using the differential backups.Type: GrantFiled: December 31, 1998Date of Patent: May 28, 2002Assignee: EMC CorporationInventors: Yuval Ofek, Zoran Cakeljic, Mathieu Gagne
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Patent number: 6370626Abstract: A method and apparatus for enabling a common data set to be utilized by multiple data processes. During a first operating mode, first and second data stores in a data storage facility with a common buffer attach to a first data process and act as mirrors. Data to be written transfers to the common buffer and then to the data stores. A second command produces a split whereby the first data store remains attached to the first data process and the second data store is available to the second data process. After the second command is executed, any data in the common buffer is transferred to the corresponding data stores in parallel with and transparently to the actions between the first and second data processes and the first and second data stores, respectively.Type: GrantFiled: April 30, 1999Date of Patent: April 9, 2002Assignee: EMC CorporationInventors: Mathieu Gagne, Haim Kopylovitz, Yuval Ofek, Natan Vishlitzky
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Publication number: 20010007102Abstract: A data storage facility for transferring data from a data altering apparatus, such as a production data processing site to a remote data receiving site. The data storage facility includes a first data store for recording each change in the data generated by the data altering apparatus. A register set records each change on a track-by-track basis. A second data store has first and second operating modes. During a first operating mode the second data store becomes a mirror of the first data store. During a second operating mode the second data store ceases to act as a mirror and becomes a source for a transfer of data to the data receiving site. Only information that has been altered, i.e., specific tracks that have been altered, are transferred during successive operations in the second operating mode. Commands from the local production site initiate the transfers between the first and second operating modes.Type: ApplicationFiled: December 19, 2000Publication date: July 5, 2001Inventors: Mathieu Gagne, Yuval Ofek
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Patent number: 6209002Abstract: A data storage facility for transferring data from a data altering apparatus, such as a production data processing site to a remote data receiving site. The data storage facility includes a first data store for recording each change in the data generated by the data altering apparatus. A register set records each change on a track-by-track basis. A second data store has first and second operating modes. During a first operating mode the second data store becomes a mirror of the first data store. During a second operating mode the second data store ceases to act as a mirror and becomes a source for a transfer of data to the data receiving site. Only information that has been altered, i.e., specific tracks that have been altered, are transferred during successive operations in the second operating mode. Commands from the local production site initiate the transfers between the first and second operating modes.Type: GrantFiled: February 17, 1999Date of Patent: March 27, 2001Assignee: EMC CorporationInventors: Mathieu Gagne, Yuval Ofek