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# Manage host pools

This section describes how to manage pools of testing hosts used for running server-side functional and performance tests in OpenText Application Quality Management.

In this topic:

## Host pools overview

A host pool is a group of testing hosts. Each project has one host pool. When managing a host pool, it is important to understand the total available resources.

If you are using the pool for a project which involves performance testing, the pool must contain at least one Controller, one load generator, and one data processor. Because hosts can have dual functionality, it is recommended that a pool contains, among the other hosts, at least one host that can be dedicated fully for Controller functionality.

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## Add or modify a host pool

Before you design and run server-side tests in OpenText Application Quality Management, you must add your testing hosts to a host pool and assign the host pool to your project.

To add a host pool:

1. Log in to Lab Management.

2. Go to Lab Resources > Pools.

3. Click the New Host Pool button . Provide the following information, and click OK.

   Field | Description
   --- | ---
   Pool Name | The name of the host pool. Note: The name may contain up to 2000 characters, excluding spaces, periods, and any of the following characters: : ; * \ / " ~ & ? { } $ % | < > + = ^ [ ] ( )
   C+LG Hosts | The number of hosts with both Controller and Load generator purposes in the host pool. Read-only.
   Controller Hosts | The number of Controller hosts in the host pool. Read-only.
   Description | A description of the host pool.
   DP Hosts | The number of Data processor hosts in the host pool. Read-only.
   LG Hosts | The number of Load generator hosts in the host pool. Read-only.
   Pool ID | The ID of the host pool. Generated by the system and read-only.

4. Link one or more hosts to the host pool.
   1. Click the Linked Hosts tab of the pool.

   2. Click Add Hosts to Pool . Select hosts from the grid and click Add.

Alternatively, you can link a single host to multiple host pools from the Belongs To Pools field in the host's details. For details, see Add or modify testing hosts.

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