IP Library › Granted Patent US 8,176,277
Granted Patent B2
US 8,176,277 · App. 13/216,558 · Granted May 8, 2012

Replication of deduplicated storage system

Assignee: EMC Corporation
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Quick Facts
Patent No.
US 8,176,277
App. No.
13/216,558
Filed
Aug 24, 2011
Granted
May 8, 2012
Kind
B2
Art Unit
2186
USPC
711/162
Abstract

A method of replicating a deduplicated storage system is disclosed. The method comprises storing a stream of data on an originator deduplicating system by storing deduplicated segments and information on how to reconstruct the stream of data. The method further comprises replicating the originator deduplicating system by receiving a copy of the deduplicated segments, information regarding containers for the deduplicated segments, and information on how to reconstruct the stream of data transferred from the originator deduplicating system to the replica system.

Claims (20)

1. A system for replicating a deduplicated storage system comprising:

an originator deduplicating system, wherein the originator deduplicating system stores a stream of data by storing deduplicated segments and information on how to reconstruct the stream of data on the originator deduplicating system; and

a replica system replicating the originator deduplicating system, wherein the replica system receives a copy of the deduplicated segments, information regarding containers for the deduplicated segments, and information on how to reconstruct the stream of data transferred from the originator deduplicating system.

2. The system as in claim 1 , wherein a checksum is used to verify successful transfer of the deduplicated segments from the originator deduplicating system to the replica system.

3. The system as in claim 1 , wherein a checksum is used to verify successful transfer of the information on how to reconstruct the stream of data from the originator deduplicating system to the replica system.

4. The system as in claim 1 , wherein information regarding containers for the deduplicated segments includes instructions the originator deduplicating system derives for updating the containers.

5. The system as in claim 4 , wherein the instructions comprise instructions for updating the containers to account for a deleted file.

6. The system as in claim 1 , wherein a state of the replica system is transferred from the replica system to the originator deduplicating system.

7. A method for replicating a deduplicated storage system comprising: storing a stream of data on an originator deduplicating system by storing deduplicated segments and information on how to reconstruct the stream of data; and replicating the originator deduplicating system by receiving a copy of the deduplicated segments, information regarding containers for the deduplicated segments, and information on how to reconstruct the stream of data transferred from the originator deduplicating system to a replica system.

8. The method as in claim 7 , wherein a checksum is used to verify successful transfer of the deduplicated segments from the originator deduplicating system to the replica system.

9. The method as in claim 7 , wherein a checksum is used to verify successful transfer of the information on how to reconstruct the stream of data from the originator deduplicating system to the replica system.

10. The method as in claim 7 , wherein information regarding containers for the deduplicated segments includes instructions the originator deduplicating system derives for updating the containers.

11. The method as in claim 10 , wherein the instructions comprise instructions for updating the containers to account for a deleted file.

12. The method as in claim 7 , further comprising transferring a state of the replica system from the replica system to the originator deduplicating system.

13. A computer program product for replicating a deduplicated storage system, the computer program product being embodied in a non-transitory computer readable medium and comprising computer instructions for: storing a stream of data on an originator deduplicating system by storing deduplicated segments and information on how to reconstruct the stream of data; and replicating the originator deduplicating system by receiving a copy of the deduplicated segments, information regarding containers for the deduplicated segments, and information on how to reconstruct the stream of data transferred from the originator deduplicating system to a replica system.

14. The computer program product as recited in claim 13 , wherein a checksum is used to verify successful transfer of the deduplicated segments from the originator deduplicating system to the replica system.

15. The computer program product as recited in claim 13 , wherein a checksum is used to verify successful transfer of the information on how to reconstruct the stream of data from the originator deduplicating system to the replica system.

16. The computer program product as recited in claim 13 , wherein information regarding containers for the deduplicated segments includes instructions the originator deduplicating system derives for updating the containers.

17. The computer program product as recited in claim 16 , wherein the instructions comprise instructions for updating the containers to account for a deleted file.

18. The computer program product as recited in claim 13 , further comprising computer instructions for transferring a state of the replica system from the replica system to the originator deduplicating system.

Assignments (13)
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 Nov 16, 2011
From: BRICKER, ALLAN J.; JOHNSSON, RICHARD; WADE, GREG
To: DATA DOMAIN, INC.
Reel/Frame 027236/0066 →
CONVERSION Recorded Nov 16, 2011
From: DATA DOMAIN, INC.
To: DATA DOMAIN LLC
Reel/Frame 027241/0550 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 16, 2011
From: DATA DOMAIN HOLDING, INC.
To: EMC CORPORATION
Reel/Frame 027239/0383 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 16, 2011
From: DATA DOMAIN LLC
To: DATA DOMAIN HOLDING, INC.
Reel/Frame 027239/0342 →
Continuity (3)
Continuation 12460766 · Jul 24, 2009
Continuation 11237628 · Sep 27, 2005
Related Publication 20110307441A1 · Dec 15, 2011