Many have had a good attempt to try and explain exactly how the Fusion Drive works and answer questions about it like ArsTechnica yesterday, but Apple has now released an official FAQ for the technology, answering questions going from basic stuff to troubleshooting.
Questions about paritions and configuration are asnwered, as well as running Windows via Bootcamp and possible error messages. There’s some especially interesting limitations, such as that you can only have two partitions on the hard disk, and that Boot Camp is not supported for the 3TB version.
If you’re thinking about buying or will be buying a Fusion Drive equipped iMac or Mac mini, I would highly recommend checking this out as it’s a neat guide.