I stumbled accross something Intel released a while ago called Matrix RAID (or sometimes Matrix Storage) and was suprised it I hadn't heard it talked about before. Put simply, what it does is allow you to raid different parts of a hard drive in different ways. I'm thinking of using it on two 500GB drives and create one 250 mirrored (RAID 1) partition and a 500 striped (RAID 0) partition so I can get 250GB of redundant storage for backups and 500GB for media storage.
Has anyone else heard of this before or used it? It seems like a really good idea (performance doesn't seem to be badly effected) so I was wondering why it isn't so widely used.