8456ch_ConfigGUI.fm Draft Document for Review December 5, 2019 4:33 pm 11.9 Deleting volumes You can use the GUI to delete volumes that are no longer needed. By default, the GUI  enforces safe deletion of volumes that are  in use .  In the case of FB volumes, a volume is considered to be  in use  if it is in a Copy Services  relationship or if the volume has received an I/O operation in the last five minutes. A CKD  volume is considered  in use  if it participates in a Copy Services relationship, or if the IBM Z  path mask indicates that the volume is in a grouped state or online to any host system. You can instruct the GUI to force the deletion of volumes that are  in use  by selecting the  optional checkbox in the  Delete Volumes  dialog box, as shown in #1 in Figure 11-106. Note  though, that this does NOT apply to volumes that are in a safeguarded copy relationship.  The following example shows the steps needed to delete an FB volume that is  in use : 1. Navigate to the hosts-centric Volumes view,  Volumes -> Volumes by Host. 2. Select the desired volume to be deleted, then click  Actions -> Delete  as shown in #2.  Note that the actions menu can also be displayed by the right-click action of the mouse  after selecting the desired volume.  3. The Delete Volume dialog is displayed (#3). 4. You are required to confirm the action by entering the unique code displayed by the GUI in  the dialog as shown in #4. 5. Since the selected volume is mapped to the host  itso-host  (#5), select the checkbox as  shown in #1, and click on  OK . 6. A task window opens, and is updated with progress on the task until it is completed: Figure 11-106 Delete volumes  340  IBM DS8900F Architecture and Implementation 1 4 2 3 5