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US 8,543,609 B1Granted
Snapshots in deduplication
AssigneeEMC Corporation
InventorAssaf Natanzon
Life of this patent
Estimating the term…
Abstract
A method, system, and program product for creating a virtual LUN from data on a de-duplication device and exposing, via a DPA, the virtual LUN.
Claims20
A system for accessing data on a data de-duplication device, the system comprising:
- a data protection appliance (DPA)
- a de-duplication device;
- and
- computer-executable logic operating in memory, wherein the computer-executable program logic is configured for execution of:
- creating a virtual LUN based on data on the de-duplication device;
- exposing, via the DPA, the virtual LUN;
- storing write IOs arriving to the DPA in the journal;
- reading data from the de-duplication device;
- applying data to the LUN
- reading data from the journal;
- applying the data to the LUN;
- and
- letting the host transparently access the LUN directly and not transfer data to the DPA device.
10 more elements
A computer implemented method for data replication, the method comprising:
- creating a virtual LUN from data on a de-duplication device;
- exposing, via a DPA, the virtual LUN;
- storing write IOs arriving to the DPA in the journal;
- reading data from the de-duplication device;
- applying data to the LUN;
- reading data from the journal;
- applying the data to the LUN;
- and
- accessing letting the host transparently access the LUN directly and not transfer data to the DPA device.
6 more elements
A computer program product for use in replication comprising:
- a non-transitory computer readable medium encoded with computer executable program code for replication of data, the code configured to enable the execution of:
- creating a virtual LUN from data on a de-duplication device;
- exposing, via a DPA, the virtual LUN;
- execution of storing write IOs arriving to the DPA in the journal;
- reading data from the de-duplication device;
- applying data to the LUN;
- reading data from the journal;
- applying the data to the LUN;
- and
- letting the host transparently access the LUN directly and not transfer data to the DPA device.
7 more elements
Dependencies are inferred from the claim text.