Currently we have a FAS2552 switchless cluster running 9.1.  We're planning an upgrade to FAS8200 and considering our migration options.  Netapp themselves aren't being terribly forthcoming on the best route to do this. 

I had hoped that upgrading from a FAS25xx would be a common thing with a reference workflow to go with it.  Maybe things are complicated somewhat because the FAS2552 runs ADP and the FAS8200 doesn't.  Has anyone been through a similar process or have any recommendations for a route to achieve this?

Thanks,

Chris