How does one configure / order a NX300 with the "Microsoft iSCSI initiator" / "iSCSI Software Target"? I do not see it as an option for any of the NX300 configuration, but documentation seems to indicated it is either available or comes with it. Who knows about this? How has used this configuration?

iSCSI target is not supported in NX300. The NX3000 has this capability.