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## Manually assigning arrays to existing pools 

The system administrator can manually assign arrays, or unassign / reassign assigned arrays to existing pools when the current configuration needs to be modified, such as when the system administrator adds storage capacity. To do so, complete these steps: 

1. From the Arrays by Pool window, select the array that you want to assign, then either right-click the array, or select Actions →  Assign . 

2. When you manually assign arrays, choose from an existing storage pool and define the RAID type. 

3. Click Assign . 

Figure 11-83 shows the Arrays by Pool window showing how to assign the arrays. 

<img src='content_image/990161.jpg'>

## Creating a single pool 

Occasionally, you are required to create only a single pool, as opposed to creating a pool pair for balancing the workload. To create a single storage pool, see “Creating a single pool” on page 302. 

## 11.6.3 Creating CKD logical subsystems 

Note:  You can create new LSS ranges, exact volume address ranges, and aliases all in one step. See “Creating CKD volumes” on page 329 for an example. 

The DS8000 LSS emulates a CKD storage control unit image (LCU). A CKD LSS must be created before CKD volumes can be associated to the LSS. 

To create CKD LSSs, complete these steps: 

1. Click the Volumes  icon in the system page. 

2. Select Volumes by LSS  from the menu. 

