Check SPOCK (see link in sticky post) for 8200 features.
https://h20272.www2.hpe.com/spock/utili ... _3_3_2.pdfIf you're doing compression and dedupe on 8200 you cannot do File Persona, Remote Copy or Adaptive Flash Cache.
My guess is that most of the CPU utilization on 8200 is due to background/housekeeping tasks trying to keep up with the 8200. If you log a case with HPE they are usually able to help you disable those for a short period when doing the OS upgrade. If not, might be prevented from doing an online upgrade due to CPU utilization.