iSeries and SANs

I am curious to know if anyone is using an iSeries with no (or minimal)
internal disk and connected to a SAN. If connected to a SAN how are you
doing backups. We have been migrating our Intel servers to blades and
SAN and are now looking at getting a second SAN full of cheap disk to
place in another building, connected over fiber, and do snapshot
backups. And even talking about (slight shiver) not doing tape backups.
We know of a few places that have done this but none use iSeries. Anyone
with a real life experience in this area who has anything good or bad to
say about this concept?
 
Thanks
 
Mike Cunningham
Pennsylvania College of Technology
www.pct.edu
mcunning@xxxxxxx