IP Library Granted Patent US 11,347,423
Granted Patent B2
US 11,347,423 · App. 16/525,192 · Granted May 31, 2022

System and method for detecting deduplication opportunities

Inventors: Ivan Basov (Brookline, MA); Sorin Faibish (Newton, MA); Istvan Gonczi (Berkley, MA)
Assignee: EMC IP HOLDING COMPANY, LLC
G06F3/0641G06F3/061G06F3/0608G06F3/0689G06F17/18
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Quick Facts
Patent No.
US 11,347,423
App. No.
16/525,192
Granted
May 31, 2022
Kind
B2
Abstract

A method, computer program product, and computer system for identifying a plurality of blocks. At least one heuristic associated with at least a portion of the plurality of blocks may be determined. It may be determined whether at least the portion of the plurality of blocks is a candidate for deduplication based upon, at least in part, the at least one heuristic. At least the portion of the plurality of blocks may be deduplicated based upon, at least in part, the at least one heuristic.

Claims (32)

1. A computer-implemented method comprising:

identifying a plurality of blocks;

determining at least one heuristic associated with at least a portion of the plurality of blocks;

determining whether at least the portion of the plurality of blocks is a candidate for deduplication based upon, at least in part, the at least one heuristic;

performing additional data comparison on the candidate prior to deduplication to determine if the candidate for deduplication has duplicate data; and

deduplicating at least the portion of the plurality of blocks based upon, at least in part, the at least one heuristic and the additional data comparison.

2. The computer-implemented method of claim 1 wherein the at least one heuristic includes a distance function associated with at least the portion of the plurality of blocks.

3. The computer-implemented method of claim 2 wherein the at least one heuristic includes a digital entropy value associated with at least the portion of the plurality of blocks resulting from the distance function.

4. The computer-implemented method of claim 2 wherein the distance function includes alphabet encoding.

5. The computer-implemented method of claim 3 wherein at least the portion of the plurality of blocks is the candidate for deduplication when the digital entropy value associated with at least the portion of the plurality of blocks resulting from the distance function is less than a threshold.

6. The computer-implemented method of claim 3 wherein at least the portion of the plurality of blocks is not the candidate for deduplication when the digital entropy value associated with at least the portion of the plurality of blocks resulting from the distance function is more than a threshold.

7. A computer program product residing on a non-transitory computer readable storage medium having a plurality of instructions stored thereon which, when executed across one or more processors, causes at least a portion of the one or more processors to perform operations comprising:

identifying a plurality of blocks;

determining at least one heuristic associated with at least a portion of the plurality of blocks;

determining whether at least the portion of the plurality of blocks is a candidate for deduplication based upon, at least in part, the at least one heuristic;

performing additional data comparison on the candidate prior to deduplication to determine if the candidate for deduplication has duplicate data; and

deduplicating at least the portion of the plurality of blocks based upon, at least in part, the at least one heuristic and the additional data comparison.

8. The computer program product of claim 7 wherein the at least one heuristic includes a distance function associated with at least the portion of the plurality of blocks.

9. The computer program product of claim 8 wherein the at least one heuristic includes a digital entropy value associated with at least the portion of the plurality of blocks resulting from the distance function.

10. The computer program product of claim 8 wherein the distance function includes alphabet encoding.

11. The computer program product of claim 9 wherein at least the portion of the plurality of blocks is the candidate for deduplication when the digital entropy value associated with at least the portion of the plurality of blocks resulting from the distance function is less than a threshold.

12. The computer program product of claim 9 wherein at least the portion of the plurality of blocks is not the candidate for deduplication when the digital entropy value associated with at least the portion of the plurality of blocks resulting from the distance function is more than a threshold.

13. A computing system including one or more processors and one or more memories configured to perform operations comprising:

identifying a plurality of blocks;

determining at least one heuristic associated with at least a portion of the plurality of blocks;

determining whether at least the portion of the plurality of blocks is a candidate for deduplication based upon, at least in part, the at least one heuristic;

performing additional data comparison on the candidate prior to deduplication to determine if the candidate for deduplication has duplicate data; and

deduplicating at least the portion of the plurality of blocks based upon, at least in part, the at least one heuristic and the additional data comparison.

14. The computing system of claim 13 wherein the at least one heuristic includes a distance function associated with at least the portion of the plurality of blocks.

15. The computing system of claim 14 wherein the at least one heuristic includes a digital entropy value associated with at least the portion of the plurality of blocks resulting from the distance function.

16. The computing system of claim 15 wherein at least the portion of the plurality of blocks is the candidate for deduplication when the digital entropy value associated with at least the portion of the plurality of blocks resulting from the distance function is less than a threshold, and wherein at least the portion of the plurality of blocks is not the candidate for deduplication when the digital entropy value associated with at least the portion of the plurality of blocks resulting from the distance function is more than the threshold.

17. The computing system of claim 14 wherein the distance function includes alphabet encoding.

Assignments (9)
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 (053311/0169) Recorded Jun 23, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL PRODUCTS L.P.; EMC CORPORATION; EMC IP HOLDING COMPANY LLC
Reel/Frame 060438/0742 →
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (050724/0571) Recorded Jun 23, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL PRODUCTS L.P.; EMC CORPORATION; EMC IP HOLDING COMPANY LLC
Reel/Frame 060436/0088 →
RELEASE OF SECURITY INTEREST AT REEL 050406 FRAME 421 Recorded Nov 2, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
To: DELL PRODUCTS L.P.; EMC CORPORATION; EMC IP HOLDING COMPANY LLC
Reel/Frame 058213/0825 →
SECURITY INTEREST Recorded Jun 5, 2020
From: DELL PRODUCTS L.P.; EMC CORPORATION; EMC IP HOLDING COMPANY LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS COLLATERAL AGENT
Reel/Frame 053311/0169 →
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 →
PATENT SECURITY AGREEMENT (NOTES) Recorded Oct 15, 2019
From: DELL PRODUCTS L.P.; EMC CORPORATION; EMC IP HOLDING COMPANY LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS COLLATERAL AGENT
Reel/Frame 050724/0571 →
SECURITY AGREEMENT Recorded Sep 17, 2019
From: DELL PRODUCTS L.P.; EMC CORPORATION; EMC IP HOLDING COMPANY LLC
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
Reel/Frame 050406/0421 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 29, 2019
From: BASOV, IVAN; FAIBISH, SORIN; GONCZI, ISTVAN
To: EMC IP HOLDING COMPANY, LLC
Reel/Frame 049891/0887 →