Recovery of data on a primary data volume
First Claim
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1. A method of restoring data on a primary data volume, the method comprising:
- generating an image of the primary data volume at a specified point-in-time based on data stored on a backup data volume,wherein the data stored on the backup data volume includes data written to the primary data volume and stamps to indicate when the data was written to the primary data volume;
restoring the primary data volume based on the generated image of the primary data volume; and
while the primary data volume is being restored, satisfying read/write requests to the primary data volume using the generated image of the primary data volume rather than the primary data volume.
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Abstract
Data on a primary data volume is restored by generating an image of the primary data volume at a specified point-time based on data stored on a backup data volume, where the data stored on the backup data volume includes data written to the primary data volume and stamps to indicate when the data was written to the primary data volume. The primary data volume is restored based on the generated image of the primary data volume. Additionally, while the primary data volume is being restored, read/write requests to the primary data volume are satisfied using the generated image of the primary data volume.
19 Citations
28 Claims
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1. A method of restoring data on a primary data volume, the method comprising:
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generating an image of the primary data volume at a specified point-in-time based on data stored on a backup data volume, wherein the data stored on the backup data volume includes data written to the primary data volume and stamps to indicate when the data was written to the primary data volume; restoring the primary data volume based on the generated image of the primary data volume; and while the primary data volume is being restored, satisfying read/write requests to the primary data volume using the generated image of the primary data volume rather than the primary data volume. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system of restoring data on a primary data volume connected to a host system, the system comprising:
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a backup data volume configured to be connected to the host system, wherein the backup data volume stores data written to the primary data volume by the host system, and wherein to restore the primary data volume; an image of the primary data volume at a specified point-in-time is generated based on the data stored on the backup data volume, data stored on the backup data volume is sent to the primary data volume based on the generated image of the primary data volume, and while the primary volume is being restored, read/write requests to the primary data volume are satisfied using the generated image of the primary data volume rather than the primary data volume. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A computer-readable storage medium with computer program instructions to cause the performing of a process comprising:
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generating an image of the primary data volume at a specified point-in-time based on data stored on a backup data volume; restoring the primary data volume based on the generated image of the primary data volume; and while the primary data volume is being restored, satisfying read/write requests to the primary data volume using the generated image of the primary data volume rather than the primary data volume. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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Specification