Raspberry Pi 3 boot direct from USB mass storage
One of the issues with a Raspberry Pi was that it is relatively easy to corrupt an SD card if you had power issues or got lazy when switching off.
The Raspberry Pi 3 has the ability to boot from USB mass storage, it does need an up to date version of Raspbian and either latest version of NOOBS or using apt-get to update the OS and then some configuration changes though.Instructions can be found here.
This does change things somewhat, however my owncloud server is running on a Pi 2 so I will need to press my new Pi 3 into service (New? My old one blew up!) or buy a new one if I intend to go down that route..
Again I stress it will not work on anything but a Pi 3 B and as far as I can see will not work with any of the A series (unless the A 3 when/if it is released may), B, 2 B either Zeros.