You can delete a key management server from the Command Center only if the key management server is not associated to a storage pool.
If the key management server that you want to delete is associated with a storage pool, then, to delete the server, you must do one of the following things:
Disassociate the server from the storage pool.
Associate a different key management server with the storage pool.
From the navigation pane, go to Manage > Security.
The Security page appears.
Click the Key management servers tile.
The Key management servers page appears.
In the Actions column for the key management server, click the action button, and then click Delete.
In the Confirm delete dialog box that appears, click Yes.