ABILITY TO PARTITION AN ARRAY INTO TWO OR MORE LOGICAL ARRAYS WITH INDEPENDENTLY RUNNING SOFTWARE

• US 20170242604A1
• Filed: 05/10/2017
• Published: 08/24/2017
• Est. Priority Date: 04/10/2015
• Status: Active Grant

• Current Assignee: Pure Storage, Inc.
• Original Assignee: Pure Storage, Inc.
• Inventors: Botes, Par, Colgrove, John, Hayes, John
• Granted Patent: US 10,496,295 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 11/1076 Parity data used in redundant arrays of independent storages, e.g. in RAID systems
• CPC Class Codes: G06F 11/1441 Resetting or repowering
• CPC Class Codes: G06F 11/2094 Redundant storage or storage space G06F11/2056 takes precedence
• CPC Class Codes: G06F 3/0619 in relation to data integrity, e.g. data losses, bit errors
• CPC Class Codes: G06F 3/0644 Management of space entities, e.g. partitions, extents, pools
• CPC Class Codes: G06F 3/065 Replication mechanisms
• CPC Class Codes: G06F 3/0665 at area level, e.g. provisioning of virtual or logical volumes
• CPC Class Codes: G06F 3/0689 Disk arrays, e.g. RAID, JBOD

Abstract

A plurality of storage nodes in a single chassis 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

1. A method of storing data in a storage cluster, comprising:

assigning a plurality of storage nodes of a storage cluster to a selectable number of logical arrays, with each logical array acting as a further storage cluster, each further storage cluster having a subset of the plurality of storage nodes;

storing first data in a first one of the selectable number of logical arrays; and

storing second data in a second one of the selectable number of logical arrays.

2. The method of claim 1, wherein the storing the first data and the storing the second data comprises storing the first data and the second data in shared data striping across the plurality of storage nodes of the storage cluster, and wherein the storage cluster and the further storage cluster are contained within differing chassis.

3. The method of claim 1, wherein the storing the first data and the storing the second data comprises storing the first data and the second data in isolation from each other, with data, data striping, metadata, control and processing of the first one of the selectable number of logical arrays isolated and independent of data, data striping, metadata, control and processing of the second one of the selectable number of logical arrays.

4. The method of claim 1, further comprising:

receiving the first data, for storage in the first one of the selectable number of logical arrays, through a first port assigned to the first one of the selectable number of logical arrays; and

receiving the second data, for storage in the second one of the selectable number logical arrays, through a second port assigned to the second one of the selectable number of logical arrays.

5. The method of claim 1, further comprising:

assigning a first cluster identifier to the first one of the selectable number of logical arrays; and

assigning a differing, second cluster identifier to the second one of the selectable number logical arrays.

6. The method of claim 1, further comprising:

receiving a storage node into a chassis that holds the plurality of storage nodes of the storage cluster; and

assigning the storage node to the first or the second one of the selectable number of logical arrays.

7. The method of claim 1, further comprising:

showing, on a visual indicator of the storage cluster, which ones of the plurality of storage nodes are assigned to each of the first and second ones of the selectable number of logical arrays.

8. A tangible, non-transitory, computer-readable media having instructions thereupon which, when executed by one or more processors of a storage cluster, cause the one or more processors to perform a method comprising:

assigning a first subset of a plurality of storage nodes of the storage cluster to a first logical array as one of a selectable number of logical arrays in the storage cluster;

assigning a second subset of the plurality of storage nodes of the storage cluster to a second logical array as a further one of the selectable number of logical arrays in the storage cluster;

storing first data in the first logical array; and

storing second data in the second logical array.

9. The computer-readable media of claim 8, wherein:

the storing the first data in the first logical array comprises storing the first data in a shared data striping across the plurality of storage nodes of the storage cluster; and

the storing the second data in the second logical array comprises storing the second data in the shared data striping across the plurality of storage nodes of the storage cluster.

10. The computer-readable media of claim 8, wherein:

the storing the first data in the first logical array comprises storing the first data with first data striping, first metadata, first control and first processing;

the storing the second data in the second logical array comprises storing the second data with second data striping, second metadata, second control and second processing; and

the first data striping, first metadata, first control and first processing are isolated and independent of the second data striping, second metadata, second control and second processing.

11. The computer-readable media of claim 8, wherein the method further comprises:

assigning a first port of the storage cluster to the first logical array;

receiving the first data through the first port;

assigning a second port of the storage cluster to the second logical array; and

receiving the second data through the second port.

12. The computer-readable media of claim 8, wherein the method further comprises:

assigning a storage node, which is received into a chassis that holds the plurality of storage nodes of the storage cluster, to the first logical array or the second logical array.

13. The computer-readable media of claim 8, wherein the method further comprises:

displaying a visual indicator illustrating that the first subset is assigned to the first logical array and the second subset is assigned to the second logical array.

14. A storage cluster, comprising:

a plurality of storage nodes coupled to communicate as the storage cluster;

the plurality of storage nodes configurable to assign a first subset of the plurality of storage nodes to a first one of a selectable number of logical arrays in the storage cluster and assign a second subset of the plurality of storage nodes to a second one of the selectable number of logical arrays in the storage cluster; and

each of the selectable number of logical arrays configurable to act as a further storage cluster and store data in storage memory.

15. The storage cluster of claim 14, further comprising:

the plurality of storage nodes configurable to store data for the first and second ones of the selectable number of logical arrays in shared data striping across the plurality of storage nodes.

16. The storage cluster of claim 14, further comprising:

each of the selectable number of logical arrays configurable to store data and have data striping, metadata, control and processing in isolation from each other of the selectable number of logical arrays.

17. The storage cluster of claim 14, further comprising:

the plurality of storage nodes configurable to assign a first port, of the first subset of the plurality of storage nodes, to the first one of the selectable number of logical arrays, and assign a second port, of the second subset of the plurality of storage nodes, to the second one of the selectable number of logical arrays.

18. The storage cluster of claim 14, further comprising:

the plurality of storage nodes configurable to assign a first cluster identifier to the first one of the selectable number of logical arrays and a differing, second cluster identifier to the second one of the selectable number of logical arrays.

19. The storage cluster of claim 14, further comprising:

a chassis having a plurality of slots, each dimensioned to receive a storage node; and

the plurality of storage nodes configurable to assign a storage node, received into one of the plurality of slots, to the first or second one of the selectable number of logical arrays.

20. The storage cluster of claim 14, further comprising:

one or more visual indicators on one or more of the plurality of storage nodes; and

the plurality of storage nodes configurable to direct the one or more visual indicators to show which of the plurality of storage nodes are assigned to which of the selectable number of logical arrays and wherein the storage cluster is one of a plurality of storage clusters with each storage cluster contained within differing chassis.