I wanted to play around with this, so I took a pro/1000 server adapter and flashed the iscsi boot firmware onto it. Had some fun getting the vsphere5 installer to work with this, since all the google fu I found told me I needed to have the option rom load but the install cd had to come before the nic, which was fine. The blogs I found showed broadcom nics where you could tell the nic 'do not boot from this target!', and after installing, you change that to 'boot from this target', but there is no obvious equivalent for the intel nics By trial and error, I got it to work by changing the iscsi boot port to secondary (disabled mode causes the option rom to not even load, it seems.) So, the installer finds the iscsi LUN (which was on a freenas NAS I had set up), and starts writing to it. It gets to 90% and fails, saying 'Expecting 2 bootbanks, found 0.' A reboot ended up booting that install anyway, although some things like the password were not set. I googled for this, but found nothing very useful - a couple of blog items involving cisco ucs blades, netapp appliances, etc... Some folks were reporting that this worked in 4.1, so I'm curious what this is all about?