mkdistributedarray

Parameters

-levelraid5 | raid6

(Required) Specifies the RAID level for the array being created. The values are:

• raid5
• raid6

-driveclassdriveclass_id

(Required) Specifies the class being used to create the array. The driveclass_id must be a numeric value (specified with the lsdriveclass command).

-drivecount4 - 128

(Required) Specifies the number of drives to use for the array. The minimum drive count for:

• RAID-5: 4
• RAID-6: 6

-stripewidth3-16

(Optional) Indicates the width of a single unit of redundancy within a distributed set of drives. The value must be:

• RAID-5: 3 - 16
• RAID-6: 5 - 16

-allowsuperior

(Optional) Specifies that you can use drives that are not an exact match to the drive class used when creating the array (such as drives that use different capacity or technology). The system attempts to select the closest match to the class when satisfying the drive count. You can select higher capacity members of the same technology type before you select higher technology members.

Note: For a drive A to be considered superior to drive B, these situations must be true:

1. Drives A and B are use=candidate
2. Drives A and B are in the same I/O group.
3. Drive A's speed (RPM) is equal to or greater than drive B's. Solid-state drives (SSDs) are higher speed than all hard disk drives (HDDs).
4. Drive A's capacity is equal to or greater than drive B's.
5. Drive A has a block size that is smaller than or equal to drive B.

-rebuildareas1 | 2 | 3 | 4

(Optional) Specifies the reserved capacity that is distributed across all drives available to an array. This capacity restores data after a drive failure. The values are:

• 1
• 2
• 3
• 4

The value is 1 - 4 (inclusive) for RAID-5 and RAID-6 arrays.

-rebuildareasgoal0 | 1 | 2 | 3 | 4

(Optional) Specifies the number of rebuild areas that the array can target to keep available. If the number available in the array falls below this number, a system alert is raised.

Note: The goal value should not exceed the number of rebuild areas specified for the array.

The values are:

• 0
• 1
• 2
• 3
• 4

-strip128 | 256

(Optional) Specifies the strip size in KiB for the array being configured. The values are 128 or 256.

-namenew_name_arg

(Optional) Specifies the name of the array.

-encryptyes | no

(Optional) Specifies the array to encrypt. The values are yes and no. This parameter defaults to yes when lsencryption has its status set to enabled and all nodes in the I/O group that the array is being defined on are encryption-capable.

Note: The value can be yes only if encryption is enabled on the array's I/O group.

If you specify -encrypt yes when the I/O group does not support encryption, the command fails.

-slowwriteprioritylatency | redundancy

(Optional) Controls array ability to complete write operations that take too long, even if it temporarily compromises redundancy.

The value can be either latency or redundancy:

• latency implies the feature is enabled for normal I/O operations
• redundancy implies the feature is not enabled for normal I/O operations

The default value is latency mode for existing arrays).

Important: An array can cause member drives to become unsynchronized (to preserve response time) if the value is latency. If the value is redundancy, the array cannot cause member drives to become unsynchronized (to preserve time) and I/O performance is impacted.

mdiskgrp_id | mdiskgrp_name

(Required) Indicates the MDisk array ID or name.