text: IBM Spectrum Virtualize code V8.1 and later supports up to four key server objects that are 
  defined in parallel. But, only one key server type (SKLM or KeySecure) can be enabled at one 
  time. 
  
  Another characteristic when working with key servers is that it is not possible to migrate from 
  one key server type directly to another. If you want to migrate from one type to another, you 
  first need to migrate from your current key server to USB encryption, and then migrate from 
  USB to the other type of key server. 