IP Library › Granted Patent US 12,379,854
Granted Patent B2
US 12,379,854 · App. 17/497,322 · Granted Aug 5, 2025

Two or more logical arrays having zoned drives

Inventors: Par Anders Botes (Atherton, CA); Ronald Karr (Palo Alto, CA)
Assignee: PURE STORAGE, INC.
G06F3/0619G06F3/0644G06F3/065G06F3/0665G06F3/0689G06F11/1076G06F11/2094G06F11/1441
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Quick Facts
Patent No.
US 12,379,854
App. No.
17/497,322
Granted
Aug 5, 2025
Kind
B2
Abstract

A plurality of storage nodes is provided. The plurality of storage nodes includes a first plurality of storage nodes configured to communicate together as a first storage cluster and a second plurality of storage nodes configured to communicate together as a second storage cluster. Each of the first and second pluralities of storage nodes has nonvolatile solid-state memory for user data storage and each of the first and second pluralities of storage nodes is configured to distribute user data and metadata associated with the user data throughout a respective plurality of storage nodes such that a respective storage cluster maintains ability to read the user data, using erasure coding, despite a loss of one or more of the respective plurality of storage nodes.

Claims (37)

1. A method, comprising:

assigning a first subset of storage nodes of a plurality of storage nodes as members of a first storage cluster partitioned into a first set of logical arrays comprising a first set of computing resources and a first set of storage devices, wherein the first subset of storage nodes is distributed across two or more chassis and storage nodes of the first subset of storage nodes are configured to communicate with one another and store erasure coded data across the two or more chassis as the first storage cluster;

assigning a second subset of storage nodes of the plurality of storage nodes as members of a second storage cluster partitioned into a second set of logical arrays comprising a second set of computing resources and a second set of storage devices, which is independent of the first storage cluster, wherein storage nodes of the second subset of storage nodes comprise a plurality of authorities and are configured to communicate with one another and store data as the second storage cluster, wherein the second set of computing resources and the second set of storage devices is different than the first set of computing resources and the first set of storage devices and wherein the plurality of authorities control one or more partitions of the second set of storage devices for reading and writing data for the second plurality of storage nodes and at least one of the second set of storage devices has multiple authorities;

executing a first software on the first set of logical arrays; and

executing a second software on the second set of logical arrays independent of the first set of logical arrays executing the first software, wherein the first storage cluster is configured to upgrade software independent of a software upgrade to the second storage cluster, wherein the plurality of storage nodes includes a storage controller comprising a zoned storage device.

2. The method of claim 1 , further comprising:

resetting an open zone of the zoned storage device to allow an erase block associated with the open zone to be reused.

3. The method of claim 1 , further comprising:

providing a limit on a number of open zones within the zoned storage device.

4. The method of claim 1 , further comprising:

assigning an unassigned one of the plurality of storage nodes to one of the first storage cluster or the second storage cluster.

5. The method of claim 1 , further comprising:

accessing data, via erasure coding, from a remainder of the first subset of the plurality of storage nodes, responsive to determining that one of the first subset of the plurality of storage nodes is unreachable.

6. The method of claim 2 , further comprising:

maintaining, in the first subset of the plurality of storage nodes, a first set of metadata pertaining to data of the first storage cluster, wherein no metadata pertaining to the data of the first storage cluster is present in the second storage cluster.

7. The method of claim 2 , wherein the zoned storage device comprises a zoned name space addressable by a group of blocks.

8. A storage system, comprising:

a first plurality of storage nodes distributed across two or more chassis configured to communicate with one another and store erasure coded data across the two or more chassis as a first storage cluster, wherein the first storage cluster is partitioned into a first set of logical arrays comprising a first set of computing resources and a first set of storage devices configured to execute a first software; and

a second plurality of storage nodes comprising a plurality of authorities configured to communicate with one another and store data in a second storage cluster, wherein the second storage cluster is partitioned into a second set of logical arrays comprising a second set of computing resources and a second set of storage devices configured to execute a second software independent of the first storage cluster executing the first software, wherein the second set of computing resources and the second set of storage devices is different than the first set of computing resources and the first set of storage devices and wherein the plurality of authorities control one or more partitions of the second set of storage devices for reading and writing data for the second plurality of storage nodes and at least one of the second set of storage devices has multiple authorities, the first plurality of storage nodes having a managed flash storage device that offloads management responsibilities to a storage system controller of the first plurality of storage nodes, the first storage cluster is configured to upgrade software independent of a software upgrade to the second storage cluster.

9. The system of claim 8 , wherein the first software and the second software are different versions of software.

10. The storage system of claim 8 , wherein data is stored using data striping across the first plurality of storage nodes.

11. The system of claim 8 , wherein data stored in the first set of logical arrays is in isolation from data stored in the second set of logical arrays.

12. The system of claim 8 , wherein the first plurality of storage nodes comprises a zoned storage device having a zoned name space addressable as groups of blocks.

13. The system of claim 8 , wherein the first storage cluster has security and encryption differing from and independent of security and encryption of the second storage cluster.

14. The storage system of claim 8 , wherein of the first set of storage devices or the second set of storage devices comprises one or more managed flash storage devices that offload management responsibilities to computing resources of the storage system.

15. The storage system of claim 8 , wherein at least one of the plurality of storage nodes is shared between the first set of logical arrays and the second set of logical arrays.

16. A plurality of storage clusters, comprising:

a plurality of storage nodes configured to communicate with one another and store data as a plurality of storage clusters, the plurality of storage clusters comprising:

a first storage cluster comprising a first set of storage nodes of the plurality of storage nodes, the first set of storage nodes being distributed across two or more chassis and configured to store data across the two or more chassis using erasure coding, wherein the first storage cluster is partitioned into a first set of logical arrays comprising a first set of computing resources and a first set of storage devices configured to execute a first software;

a second storage cluster comprising a plurality of authorities that is partitioned into a second set of logical arrays comprising a second set of computing resources and a second set of storage devices configured to execute a second software independent of the first storage cluster executing the first software, wherein the second set of computing resources and the second set of storage devices is different than the first set of computing resources and the first set of storage devices and wherein the plurality of authorities control one or more partitions of the second set of storage devices for reading and writing data for the second plurality of storage nodes and at least one of the second set of storage devices has multiple authorities; and

the first storage cluster configured to upgrade software independent of a software upgrade to the second storage cluster; and

each of the plurality of storage nodes having membership to one of the plurality of storage clusters such that the storage nodes having the membership to the one of the plurality of storage nodes can access data of the storage cluster, via erasure coding, and wherein one of the plurality of storage nodes includes a storage controller comprising at least one zoned storage device.

17. The plurality of storage clusters of claim 16 , wherein the storage controller is configured to reset an open zone of the zoned storage device to allow an erase block associated with the open zone to be reused.

18. The plurality of storage clusters of claim 16 , wherein the storage controller is configured to provide a limit on a number of open zones within the zoned storage device.

19. The plurality of storage clusters of claim 16 , further comprising:

at least one of the plurality of storage clusters includes at least one compute node.

20. The plurality of storage clusters of claim 16 , wherein the at least one zoned storage device comprises a zoned name space addressable by a group of blocks.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 17, 2022
From: BOTES, PAR ANDERS; KARR, RONALD
To: PURE STORAGE, INC.
Reel/Frame 059040/0756 →
Continuity (4)
Continuation In Part 16700935 · Dec 2, 2019
Continuation 15592055 · May 10, 2017
Continuation 14684183 · Apr 10, 2015
Related Publication 20220027064A1 · Jan 27, 2022
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