IP Library Granted Patent US 11,435,916
Granted Patent B2
US 11,435,916 · App. 16/453,774 · Granted Sep 6, 2022

Mapping of data storage system for a redundant array of independent nodes

Inventors: Mikhail Danilov (Saint Petersburg, RU); Konstantin Buinov (Prague, CZ)
Assignee: EMC IP HOLDING COMPANY LLC
G06F3/0635G06F3/067G06F3/0616G06F3/0617G06F3/0619G06F3/0644G06F3/0689G06F11/2043G06F11/2089
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Quick Facts
Patent No.
US 11,435,916
App. No.
16/453,774
Granted
Sep 6, 2022
Kind
B2
Abstract

Described herein, system that facilitates mapping of redundant array of independent nodes of a storage device. According to an embodiment, a system can comprise generating a first configuration of a storage cluster, wherein the storage cluster comprises a group of nodes and a group of disks, generating a second configuration of the storage cluster using the first configuration, wherein the group of nodes are divided into a first pair of nodes comprising a first node having access to a first group of disks and a second node having access to a second group of disks, and generating a third configuration of the storage cluster using the second configuration, wherein the first node comprises a first mapped node that manages the first group of disks of the first node and enables access to the second group of disks of the second node.

Claims (48)

1. A system, comprising:

a processor; and

a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:

generating a first configuration of a storage cluster, wherein the storage cluster comprises a group of nodes and a group of disks;

generating a second configuration of the storage cluster using the first configuration, wherein the group of nodes are divided into a first pair of nodes comprising a first node having access to a first group of disks and a second node having access to a second group of disks; and

generating a third configuration of the storage cluster using the second configuration, wherein the first node comprises a first mapped node that manages the first group of disks of the first node and enables access to the second group of disks of the second node, wherein the first mapped node operates on a third node that is separate from the first node and from the second node, wherein a highly available pair of mapped nodes comprises the first mapped node and a second mapped node that operates on a fourth node, and wherein the second mapped node is configured to manage the first group of disks in case of failover from the first mapped node.

2. The system of claim 1 , wherein the generating the second configuration further comprises dividing the storage cluster into a second pair of nodes comprising a fifth node having access to a third group of disks and a sixth node having access to a fourth group of disks.

3. The system of claim 2 , wherein the generating the third configuration further comprises a third mapped node associated with the fifth node that manages the third group of disks and enables access to the fourth group of disks of the sixth node.

4. The system of claim 3 , wherein the operations further comprise:

detecting an access failure of the first mapped node; and

in response to the detecting the access failure of the first mapped node, using the second mapped node to access the first group of disks.

5. The system of claim 4 , wherein the operations further comprise:

in response to the detecting the access failure of the first mapped node, using the second mapped node to access the second group of disks.

6. The system of claim 3 , wherein the operations further comprise:

detecting an access failure of the first mapped node; and

in response to the detecting the access failure of the first mapped node, using the second mapped node to access the second group of disks.

7. The system of claim 3 , wherein the second mapped node manages the third group of disks that are selected from at least two nodes of group of nodes.

8. The system of claim 2 , wherein the operations further comprise:

detecting an access failure of the second node; and

in response to the detecting the access failure of the second node, using the first mapped node to access the second group of disks associated with the second node.

9. The system of claim 1 , wherein the first mapped node manages the first group of disks that are selected from at least two nodes of the group of nodes.

10. A method, comprising:

generating, by a system comprising a processor, a first mapping of a storage cluster, wherein the storage cluster comprises a group of nodes, where a node of the group of nodes comprises a group of disks;

generating, by the system, a second mapping of the storage cluster using the first mapping, wherein the group of nodes are divided into a first pair of nodes comprising a first node comprising a first group of disks and a second node comprising a second group of disks; and

generating, by the system, a third mapping of the storage cluster using the second mapping, wherein the first node comprises a first mapped node that manages the first group of disks of the first node and manages the second group of disks of the second node, wherein the first mapped node operates on a third node that is separate from the first node and from the second node, and wherein a highly available pair of mapped nodes comprises the first mapped node and a second mapped node that operates on a fourth node, and wherein the second mapped node is configured to manage the first group of disks in case of failover from the first mapped node.

11. The method of claim 10 , wherein the generating the second mapping further comprises dividing the storage cluster into a second pair of nodes comprising a fifth node managing a third group of disks and a sixth node managing a fourth group of disks.

12. The method of claim 11 , wherein the generating the third mapping further comprises a third mapped node associated with the fifth node that manages the third group of disks and provides access to the fourth group of disks of the fourth node.

13. The method of claim 12 , further comprising:

detecting, by the system, an access failure of the first mapped node; and

in response to the detecting the access failure of the first mapped node, using, by the system, the second mapped node to access the first group of disks.

14. The method of claim 12 , further comprising:

detecting, by the system, an access failure of the first mapped node; and

in response to the detecting the access failure of the first mapped node, employing, by the system, the second mapped node to access the second group of disks.

15. The method of claim 11 , further comprising:

detecting, by the system, an access failure of the second node; and

in response to the detecting the access failure of the second node, using, by the system, the first mapped node to access the second group of disks associated with the second node.

16. A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processor, facilitate performance of operations, comprising:

generating a first mapping of a storage cluster, wherein the storage cluster comprises a group of nodes, where a node of the group of nodes comprises a group of disks;

generating a second mapping of the storage cluster using the first mapping, wherein the group of nodes are divided into a first pair of nodes comprising a first node comprising a first group of disks and a second node comprising a second group of disks; and

generating a third mapping of the storage cluster using the second mapping, wherein the first node comprises a first mapped node that manages the first group of disks of the first node and manages the second group of disks of the second node, and wherein the first mapped node operates on a third node that is separate from the first node and from the second node, wherein a highly available pair of mapped nodes comprises the first mapped node and a second mapped node that operates on a fourth node, and wherein the second mapped node is configured to manage the first group of disks in case of failover from the first mapped node.

17. The non-transitory machine-readable medium of claim 16 , wherein the generating the second mapping further comprises dividing the storage cluster into a second pair of nodes comprising a fourth node managing a third group of disks and a fifth node managing a fourth group of disks.

18. The non-transitory machine-readable medium of claim 17 , wherein the generating the third mapping further comprises a second mapped node associated with the fourth node that manages the third group of disks and provided access to the fourth group of disks of the fourth node.

19. The non-transitory machine-readable medium of claim 18 , wherein the operations further comprise:

detecting an access failure of the first mapped node; and

in response to the detecting the access failure of the first mapped node, employing the second mapped node to access the first group of disks.

20. The non-transitory machine-readable medium of claim 18 , wherein the operations further comprise:

detecting an access failure of the first mapped node; and

in response to the detecting the access failure of the first mapped node, employing the second mapped node to access the second group of disks.

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 2, 2019
From: DANILOV, MIKHAIL; BUINOV, KONSTANTIN
To: EMC IP HOLDING COMPANY LLC
Reel/Frame 049657/0693 →