Not a huge company like DO, but iwStack [1] provides a SAN backed cloud, with selectable KVM/XEN instances, custom ISO and virtual network support. The prices are similar to DO.
[1] http://iwstack.com/
Seems like they sell 50 GB of real SAN backed storage for just 3.6€ per month.
How can they afford to be so cheap?
Disclaimer: happy customer
Except that is not SAN backed storage.
From the website:
> We only use RAID-60 drive arrays with a minimum of 16 drives
That's somewhat scary. RAID-6 might be almost ok, but striped? No thank you. I bet they don't also have block level checksums.