lsarrayrecommendation

Use the lsarrayrecommendation command to view a recommended configuration for the specified drive class and number of drives.

Syntax

Parameters

-delim delimiter: (Optional) Specify a delimiter to separate data in the output.
-nohdr: (Optional) Suppress the headings in the output.
-filtervalue attribute=value: (Optional) Specifies a list of one or more filters. Only objects with a value that matches the filter attribute value are displayed.
-filtervalue?: (Optional) Displays a list of valid filter attributes.

-driveclass drive_class_id_list: (Required) Specifies the drive class, or classes, for which the array recommendation is made. You must specify at least 1 drive_class_id_list value. You can specify a total of 32 drive_class_id_list values on a single command; however, you must separate each value with a colon character (:).
-drivecount drive_count_list: (Required) Specifies the number of drives for which to make recommendation. You must specify at least 1 drive_count value. You can specify a total of 32 drive_count values on a single command; however, you must separate each value with a colon character (:).
Remember: Each drive_count value must be a numerical value between 2 and 128 (only redundant arrays are considered).
-mdiskgrp mdiskgrp_id | mdiskgrp_name: (Required) Specifies the ID or name of the pool for which to make the recommendation.

Description

This command displays the system-recommended array configuration for a specific drive class and number of drives.

This table provides the attribute values that can be displayed as output view data.

Table 1. lsarrayrecommendation output
Attribute	Possible Values
mdiskgrp_id	Indicates the MDisk group ID.
mdiskgrp_name	Indicates the MDisk group name.
drive_class_id	Indicates the drive class ID for the recommendation.
raid_level	Indicates the recommended RAID level.
distributed	Indicates whether the array is a distributed array recommendation.
min_stripe_width	Indicates the stripe width minimum.
max_stripe_width	Indicates the stripe width maximum.
stripe_width	Indicates the recommended stripe size for this storage pool.
rebuild_areas	Indicates the recommended number of rebuild areas.
strip_size	Indicates the recommended strip size for this storage pool.
drive_count	Indicates the number of drives to configure per array.
array_count	Indicates the number of arrays that can be created at the recommended drive count.
capacity	Indicates the expected usable capacity for virtualization for the array or arrays.

Note: The lsarrayrecommendation command will not recommend a distributed RAID array of compressing drives, such as FlashCore Modules, if another distributed RAID array of compressing drives is already in the same storage pool. To add more storage, you can expand the existing distributed RAID array or add a new distributed RAID array to another storage pool.

Note: The default recommendation for each drive class is the first row that is listed in the output for that drive class. All other rows for each drive class are not sorted by order of recommendation.

Note: The lsarrayrecommendation command will not recommend an array if the total effective capacity of the arrays in the system would exceed the supported effective capacity limit for the system.