Just to report back, for me the solution is Flexraid. I stopped trying to use amahi, not so much due to amahi itself but due to fedora or linux in general.
Thanks for the support !

Thanks for your reply Bigfoot65, now i can setup a guest account, which was requirement number 1 for me. i do see all the work going into such a product as Amahi. I'll try and run a real hardware configuration somewhere next week, as the VM could be the culprit in the speed department. Other VM's wi...

Thanks for your reply. For me the only reason to use something like Amahi is the "inbuilt" support for a storage pool such as greyhole. Without it, it would be a lot easier just to use W7 with folder shares. I am sure Amahi itself is probably fast enough, it's greyhole that keeps it back. ...

Replying to myself: it's a shame that amahi has such a small user community that even basic answers to beginner questions cannot be found. Also adding disks is a complex task under fedora and greyhole is way too slow to pump over 4tb of data. It's another one of the list for me : Whs is too old and ...

Just installed amahi on virtualbox to test it before buying new hardware. Install went fine, and the users guide was quite clear. However i get really low transfer speeds to the VM, with smb around 300k per second. Running vail on virtualbox i get around 60mbytes per second, or 180 times faster. Is ...