IP Library Granted Patent US 8,543,609
Granted Patent B1
US 8,543,609 · App. 13/248,926 · Granted Sep 24, 2013

Snapshots in deduplication

Inventor: Assaf Natanzon (Ramat-Gan, IL)
Assignee: EMC Corporation
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,543,609
App. No.
13/248,926
Filed
Sep 29, 2011
Granted
Sep 24, 2013
Kind
B1
Examiner
WOO, ISAAC M
Art Unit
2155
USPC
707/791
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.

Claims (56)

1. 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.

2. The system of claim 1 wherein the computer executable logic further configured for execution of:

determining if a read IO corresponds to a portion written in the journal; and

based on a positive determination, reading the read IO from the journal.

3. The system of claim 2 wherein the computer executable logic further configured for execution of:

based on a negative determination of the read corresponding to a portion written in the journal, reading the IO from the de-duplication device.

4. The system of claim 1 wherein a Virtual Machine automatically mounts the DPA to a point in time in a response to a request to restore a file, consumes a LUN exposed by the storage enabling file systems to be automatically mounted and single file recovered.

5. The system of claim 1 wherein the de-duplication device has LUN data stored as one or more files.

6. The system of claim 1 wherein a Virtual Machine automatically mounts the DPA to a point in time in a response to a request to restore a file, consumes a LUN exposed by the storage enabling file systems to be automatically mounted and single file recovered.

7. 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.

8. The computer implemented method of claim 7 wherein the method is further configured for execution of:

determining if a read IO corresponds to a portion written in the journal; and

based on a positive determination, reading the read IO from the journal.

9. The computer implemented method of claim 7 wherein based on a negative determination of the read corresponding to a portion written in the journal, reading the IO from the de-duplication device.

10. The computer implemented method of claim 7 wherein the de-duplication device has LUN data stored as one or more files.

11. The computer implemented method of claim 7 wherein a storage array exposes a LUN to an application; a splitter on the storage array redirects IOs to the LUN to the DPA; and the application answers the data via the LUN.

12. The computer implemented method of claim 7 wherein the DPA is selected from the group consisting of a virtual machine, a set of processes in the one or more storage mediums, and a part of the de-duplication device.

13. The computer implemented method of claim 7 wherein a Virtual Machine automatically mounts the DPA to a point in time in a response to a request to restore a file, consumes a LUN exposed by the storage enabling file systems to be automatically mounted and single file recovered.

14. 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.

15. The computer product of claim 14 wherein the method is further configured for execution of:

determining if a read IO corresponds to a portion written in the journal; and

based on a positive determination, reading the read IO from the journal.

16. The computer product of claim 14 wherein the method is further configured for execution of:

based on a negative determination of the read corresponding to a portion written in the journal, reading the IO from the de-duplication device.

17. The computer product of claim 14 wherein the de-duplication device has LUN data stored as one or more files.

18. The computer product of claim 14 wherein a storage array exposes a LUN to an application; a splitter on the storage array redirects IOs to the LUN to the DPA; and the application answers the data via the LUN.

19. The computer product of claim 14 wherein the DPA is selected from the group consisting of a virtual machine, a set of processes in the one or more storage mediums, and a part of the de-duplication device.

20. The computer product of claim 14 wherein a Virtual Machine automatically mounts the DPA to a point in time in a response to a request to restore a file, consumes a LUN exposed by the storage enabling file systems to be automatically mounted and single file recovered.

Assignments (11)
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (053546/0001) Recorded Jun 23, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL MARKETING L.P. (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO CREDANT TECHNOLOGIES, INC.); DELL INTERNATIONAL L.L.C.; DELL PRODUCTS L.P.; DELL USA L.P.; EMC CORPORATION; DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO FORCE10 NETWORKS, INC. AND WYSE TECHNOLOGY L.L.C.); EMC IP HOLDING COMPANY LLC
Reel/Frame 071642/0001 →
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (045455/0001) Recorded May 20, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO ASAP SOFTWARE EXPRESS, INC.); DELL MARKETING L.P. (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO CREDANT TECHNOLOGIES, INC.); DELL USA L.P.; DELL INTERNATIONAL L.L.C.; DELL PRODUCTS L.P.; DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO FORCE10 NETWORKS, INC. AND WYSE TECHNOLOGY L.L.C.); EMC CORPORATION (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO MAGINATICS LLC); EMC IP HOLDING COMPANY LLC (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO MOZY, INC.); SCALEIO LLC
Reel/Frame 061753/0001 →
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (040136/0001) Recorded Apr 26, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO ASAP SOFTWARE EXPRESS, INC.); DELL MARKETING L.P. (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO CREDANT TECHNOLOGIES, INC.); DELL USA L.P.; DELL INTERNATIONAL L.L.C.; DELL PRODUCTS L.P.; DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO FORCE10 NETWORKS, INC. AND WYSE TECHNOLOGY L.L.C.); EMC CORPORATION (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO MAGINATICS LLC); EMC IP HOLDING COMPANY LLC (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO MOZY, INC.); SCALEIO LLC
Reel/Frame 061324/0001 →
RELEASE OF SECURITY INTEREST Recorded Nov 3, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
To: ASAP SOFTWARE EXPRESS, INC.; AVENTAIL LLC; CREDANT TECHNOLOGIES, INC.; DELL USA L.P.; DELL INTERNATIONAL, L.L.C.; DELL MARKETING L.P.; DELL PRODUCTS L.P.; DELL SOFTWARE INC.; DELL SYSTEMS CORPORATION; EMC CORPORATION; EMC IP HOLDING COMPANY LLC; FORCE10 NETWORKS, INC.; MAGINATICS LLC; MOZY, INC.; SCALEIO LLC; WYSE TECHNOLOGY L.L.C.
Reel/Frame 058216/0001 →
SECURITY AGREEMENT Recorded Apr 22, 2020
From: CREDANT TECHNOLOGIES INC.; DELL INTERNATIONAL L.L.C.; DELL MARKETING L.P.; DELL PRODUCTS L.P.; DELL USA L.P.; EMC CORPORATION; FORCE10 NETWORKS, INC.; WYSE TECHNOLOGY L.L.C.; EMC IP HOLDING COMPANY LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 053546/0001 →
SECURITY AGREEMENT Recorded Mar 21, 2019
From: CREDANT TECHNOLOGIES, INC.; DELL INTERNATIONAL L.L.C.; DELL MARKETING L.P.; DELL PRODUCTS L.P.; DELL USA L.P.; EMC CORPORATION; FORCE10 NETWORKS, INC.; WYSE TECHNOLOGY L.L.C.; EMC IP HOLDING COMPANY LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 049452/0223 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 29, 2016
From: EMC CORPORATION
To: EMC IP HOLDING COMPANY LLC
Reel/Frame 040203/0001 →
SECURITY AGREEMENT Recorded Sep 21, 2016
From: ASAP SOFTWARE EXPRESS, INC.; AVENTAIL LLC; CREDANT TECHNOLOGIES, INC.; DELL USA L.P.; DELL INTERNATIONAL L.L.C.; DELL MARKETING L.P.; DELL PRODUCTS L.P.; DELL SOFTWARE INC.; DELL SYSTEMS CORPORATION; EMC CORPORATION; EMC IP HOLDING COMPANY LLC; FORCE10 NETWORKS, INC.; MAGINATICS LLC; MOZY, INC.; SCALEIO LLC; SPANNING CLOUD APPS LLC; WYSE TECHNOLOGY L.L.C.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
Reel/Frame 040136/0001 →
SECURITY AGREEMENT Recorded Sep 21, 2016
From: ASAP SOFTWARE EXPRESS, INC.; AVENTAIL LLC; CREDANT TECHNOLOGIES, INC.; DELL USA L.P.; DELL INTERNATIONAL L.L.C.; DELL MARKETING L.P.; DELL PRODUCTS L.P.; DELL SOFTWARE INC.; DELL SYSTEMS CORPORATION; EMC CORPORATION; EMC IP HOLDING COMPANY LLC; FORCE10 NETWORKS, INC.; MAGINATICS LLC; MOZY, INC.; SCALEIO LLC; SPANNING CLOUD APPS LLC; WYSE TECHNOLOGY L.L.C.
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 040134/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2013
From: EMC INTERNATIONAL COMPANY
To: EMC CORPORATION
Reel/Frame 030847/0412 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 24, 2013
From: NATANZON, ASSAF
To: EMC INTERNATIONAL COMPANY
Reel/Frame 030479/0841 →