Working with capacity pools

Capacity pools are used to group Reservation Targets, which contain resources such as CPU, memory, and storage. Capacity pools are used by Managing Reservations and Capacity Pools view to group resources based on the business purpose. A Reservation Target can belong to multiple capacity pools. The aggregated metrics that are used by capacity pools are based on the hourly data of entities available in the pools.

This section describes the following actions that can be performed on a capacity pool:

Related topic

Capacity Pools view

Creating a capacity pool

A capacity pool can be created using entities that are selected explicitly or using rules based on tags.

You can also create a capacity pool comprising of AIX shared processor pools that contain VMware hosts and clusters. The total memory and storage of the VMware hosts can be seen while viewing the Reservation Target for the AIX shared processor pools.

To create a capacity pool using manual entities selection

The following video (2:59) illustrates the process of creating a Capacity Pool using manual entries for viewing in the TrueSight console:

https://youtu.be/gIpSDxv0-n4

Navigate to the Workspace tab and select the domain from the hierarchy.
Click Add > Add capacity pool.
Enter a Name and Description for the capacity pool.
Select the Capacity Pool type.
Select Manual from the Element selection.
In the Elements area, select the elements you want to add to the capacity pool from the Available elements table and click >> to add them to the Selected elements table.
Select the Location to which the capacity pool is specific.
In the Lookup Name box, type the required lookup name.
Select the time duration for which the Domain-system relation will be valid. The default value is Always.
- Select From Today if you want the domain-system relation to be valid only from today.
- Select Always if you want the domain-system relation to be always valid.
- Select a date from the From date field if you want the domain-system relation to be valid from a set date.
Click Save.

For more information on the various fields on this screen, refer to Capacity pool fields.

To create a capacity pool using rule based entities selection

The following video (3:50) illustrates the process of creating a capacity pool based on tags for viewing in the TrueSight console.

https://youtu.be/SPm6y5sX4rY

Navigate to the Workspace tab and select the domain from the hierarchy.
Click Add > Add capacity pool.
Enter a Name and Description for the capacity pool.
Select the Capacity Pool type.
Select Rule-based from the Entity selection to create the capacity pool using entities based on a rule that uses tags to identify entities.
Use the Select tags list to select the tags that will be used to match the entities added to the capacity pool
Select the Rule evaluation mode to select the mode used to evaluate and add entities to the capacity pool.
- Select Manual and acknowledged to only add entities that currently have the selected tag(s).
- Select Automatic to dynamically add entities to the capacity pool based on tag(s) that match.
Select the Location to which the capacity pool is specific.
Select the time duration for which the domain-system relation will be valid. The default value is Always.
- Select Today if you want the domain-system relation to be valid only from today.
- Select Always if you want the domain-system relation to be always valid.
- Select a date from the From date field if you want the domain-system relation to be valid from a set date.
Click Save.

For more information on the various fields on this screen, refer to Capacity pool fields.

Capacity pool fields

The following table describes all the fields available from the Capacity Pool screen.

Field	Description
Name	Name of the capacity pool
Description	Brief description of the capacity pool. It is recommended that you include a description based on the entities you are adding to the capacity pool.
Capacity Pool type	Select the capacity pool type before selecting the entities to add to the capacity pool. The available types are: AIX Power VM Hosts, AIX Shared Processor Pool, Hyper-V Clusters, Hyper-V Hosts, KVM Hosts, OpenStack Host Aggregate, Storage Pools, VMware Clusters, VMware Datastores, and VMware Hosts.
Entity selection	Select the mode you want to use for selecting entities for adding to the capacity pool. Select Manual to manually select entities or Rule-based to select entities based on rules.
Element Selection	After you select the capacity pool type, select the elements to add to the capacity pool. This field is available only if you select Manual as the Entity selection.
Select tags	Select the Tag type, type the name of the Tag, and add it to the list of Selected tags. All entities that match the selected tags are added to the capacity pool. You can use the logical operators, AND or OR to fine tune the selected tags. This field is available only if you select Rule-based as the Entity selection.
Rule evaluation mode	The Rule evaluation mode allows you to determine if entities are added once or dynamically to the capacity pool. Select Automatic if you want to automatically add new entities that match the tags to the capacity pool. Select Manual and acknowledged to manually acknowledge entities added to the capacity pool. This field is available only if you select Rule-based as the Entity selection.
Location	Select the location to which the capacity pool will be added.
Lookup Name	Enter a unique lookup name for the capacity pool.
Domain - system relation	Select the time duration for which the domain-system relation will be valid. The default value is Always. Select From Today if you want the domain-system relation to be valid only from today. Select Always if you want the domain-system relation to be always valid. Select a date from the From date field if you want the domain-system relation to be valid from a set date.

Managing capacity pools

After you create a capacity pool, you can perform the following tasks.

Task	Procedure
Viewing a Capacity Pool	Using the Workspace hierarchy, navigate to the domain where you added the capacity pool, and click on it to view the capacity pool and the available Reservation Targets.
Adding tags to a Capacity Pool	You can add tags to a capacity pool after it is created. For more information, see Working with tags.
Unassigning Capacity Pool Elements	Click Unassign selected elements to unassign elements that are grouped in the capacity pool. You might need to select and add other entities if you remove all elements associated with the capacity pool.
Editing a Capacity Pool	Click Edit to edit the values entered while creating a capacity pool. For more information, see Capacity pool fields.
Deleting a Capacity Pool	Click Delete to delete the capacity pool.
Moving a Capacity Pool	Click Move and select another domain to move the capacity pool.