This is what I have been doing:
racadm -r <server> -u user -p password config -g cfgServerInfo -o cfgServerFirstBootDevice PXE racadm -r <server> -u user -p password serveraction hardreset
This works great for the next boot, but after that it reverts to booting off of the hard drive. I have about 400 Dell rx720 machines that I would like to set this configuration on, so if I could automate this with a script it would save me a lot of time. Any idea how to go about this?