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US 10,241,698 B2Granted
Preservation of a golden copy that stores consistent data during a recovery process in an asynchronous copy environment
AssigneeInternational Business Machines Corporation
InventorsDavid R. Blea, Anthony J. Ciaravella, Gregory E. McBride, Pamela A. Schull, Damian Trujillo
Life of this patent
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Abstract
A secondary volume of a remote computational device stores an asynchronous copy of a primary volume of a local computational device. The remote computational device generates a golden copy that stores consistent data. At least one previous version of the golden copy is stored in a journal volume of the remote computational device.
Claims15
A method, comprising:
- storing, in a secondary volume of a remote computational device, an asynchronous copy of a primary volume of a local computational device;
- generating, in the remote computational device, a golden copy that stores consistent data;
- storing at least one previous version of the golden copy in a journal volume of the remote computational device;
- determining whether cascaded point in time copy operations are supported in the remote computational device;
- and
- in response to determining that cascaded point in time copy operations are not supported in the remote computational device, generating a new version of the golden copy, subsequent to a hardening of the at least one previous version of the golden copy in the journal volume.
3 more elements
A method, comprising:
- storing, in a secondary volume of a remote computational device, an asynchronous copy of a primary volume of a local computational device;
- generating, in the remote computational device, a golden copy that stores consistent data;
- storing at least one previous version of the golden copy in a journal volume of the remote computational device;
- determining whether cascaded point in time copy operations are supported in the remote computational device;
- and
- in response to determining that cascaded point in time copy operations are supported in the remote computational device, configuring the secondary volume, the golden copy, and the journal volume in a point in time cascade.
3 more elements
A system, comprising:
- a memory;
- and
- one or more processors coupled to the memory, wherein the one or more processors perform operations, the operations comprising:
- storing, in a secondary volume of a remote computational device, an asynchronous copy of a primary volume of a local computational device;
- generating, in the remote computational device, a golden copy that stores consistent data;
- storing at least one previous version of the golden copy in a journal volume of the remote computational device;
- determining whether cascaded point in time copy operations are supported in the remote computational device;
- and
- in response to determining that cascaded point in time copy operations are not supported in the remote computational device, generating a new version of the golden copy, subsequent to a hardening of the at least one previous version of the golden copy in the journal volume.
6 more elements
A system, comprising:
- a memory;
- and
- one or more processors coupled to the memory, wherein the one or more processors perform operations, the operations comprising:
- storing, in a secondary volume of a remote computational device, an asynchronous copy of a primary volume of a local computational device;
- generating, in the remote computational device, a golden copy that stores consistent data;
- storing at least one previous version of the golden copy in a journal volume of the remote computational device;
- determining whether cascaded point in time copy operations are supported in the remote computational device;
- and
- in response to determining that cascaded point in time copy operations are supported in the remote computational device, configuring the secondary volume, the golden copy, and the journal volume in a point in time cascade.
6 more elements
A computer program product, the computer program product comprising a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code configured to perform operations, the operations comprising:
- storing, in a secondary volume of a remote computational device, an asynchronous copy of a primary volume of a local computational device;
- generating, in the remote computational device, a golden copy that stores consistent data;
- storing at least one previous version of the golden copy in a journal volume of the remote computational device;
- determining whether cascaded point in time copy operations are supported in the remote computational device;
- and
- in response to determining that cascaded point in time copy operations are not supported in the remote computational device, generating a new version of the golden copy, subsequent to a hardening of the at least one previous version of the golden copy in the journal volume.
3 more elements
A computer program product, the computer program product comprising a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code configured to perform operations, the operations comprising:
- storing, in a secondary volume of a remote computational device, an asynchronous copy of a primary volume of a local computational device;
- generating, in the remote computational device, a golden copy that stores consistent data;
- storing at least one previous version of the golden copy in a journal volume of the remote computational device;
- determining whether cascaded point in time copy operations are supported in the remote computational device;
- and
- in response to determining that cascaded point in time copy operations are supported in the remote computational device, configuring the secondary volume, the golden copy, and the journal volume in a point in time cascade.
3 more elements
Dependencies are inferred from the claim text.