8456ch_ConfigGUI.fm Draft Document for Review December 5, 2019 4:33 pm 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: Manually assigning arrays to existing pools 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. Figure 11-83 Manually assigning arrays to an existing pool 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. 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. 11.6.3 Creating CKD logical subsystems 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: 2. Select  Volumes by LSS  from the menu.  1. Click the  Volumes  icon in the system page. 326  IBM DS8900F Architecture and Implementation