Hehe I totally understand - I'm of a similar mind
Don't think of duplication as a backup tho, it's more of a hybrid software raid to allow you to ensure valuable data is retained on two physical drives - to protect you in the event of a failure. Basically you copy files to the WHS, which are initially put on your first drive, it then decides which drives in the pool to move them to, and if switched on, duplicate them to. This is pretty much all invisible to you. You will never see the duplicate (on a day to day basis) and it doesn't provide a backup if you accidentally delete the file.
So think of WHS storage pool as a hybrid raid, rather than backup, but giving you the control over which shares to raid instead of all your data (unless u switch on duplication on all shares).
Edit: Actually what you can do - and setup through RDP on the WHS box is create a set of duplicate shares manually, and run Synctoy to back the shares up. This would create a separate physical share - but if the main reason for this is your housemates accidentally deleting things - I'd go with the guest account - or give them their own read only accounts.
If you want the control of having multiple RAID arrays, separated and under your total control then WHS isn't for you. As I said before WHS can work on a RAID, but it will still try and pool all your RAIDs together, e.g. if you had say 2x1tb RAID1's (4x500gb), Windows would see 2 physical disks but WHS would combine both into the pool on install. Also you cannot control which share resides on which disk within the pool. BTW there is a way of adding arrays or physical disks to the WHS after install, but they can't be in your machine during install!!! But to me this kind of defeats the whole purpose of WHS as it's meant to be simple, secure and transparent, and by the sound of it for you a W2K3 setup or WinXP would be better given the amount of control you want to have.
Anyway, give it a go and let us know what you think.
