- Patent Title: Remote data forwarding using a nocopy clone of a production volume
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Application No.: US16776615Application Date: 2020-01-30
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Publication No.: US11281540B2Publication Date: 2022-03-22
- Inventor: Akshay Kumar Srivastava , Sandeep Chandrashekhara , Michael Ferrari , Deepak Vokaliga , Darren Fernandes
- Applicant: EMC IP HOLDING COMPANY LLC
- Applicant Address: US MA Hopkinton
- Assignee: EMC IP HOLDING COMPANY LLC
- Current Assignee: EMC IP HOLDING COMPANY LLC
- Current Assignee Address: US MA Hopkinton
- Agency: Anderson Gorecki LLP
- Main IPC: G06F16/27
- IPC: G06F16/27 ; G06F11/14 ; G06F16/21

Abstract:
A remote data facility includes a primary storage volume on a first storage system mirrored to a backup storage volume on a second storage system. A nocopy clone of a production volume is added to the primary storage volume. A define process is used to cause the tracks of the nocopy clone to point to backend allocations of tracks of memory of the production volume. As tracks of the nocopy clone are defined, corresponding flags are marked as invalid to cause data associated with the tracks to be replicated across the remote data facility to the backup storage volume. Incremental clones can be added to the primary storage volume, defined, and replicated on the remote data facility using the same process. Nocopy clones and target-less nocopy snapshots of the backup storage volume are used to restore the production volume using failover/failback mechanisms of the remote data facility.
Public/Granted literature
- US20210240568A1 Remote Data Forwarding Using a Nocopy Clone of a Production Volume Public/Granted day:2021-08-05
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