I wrote this article a year ago. It is still valid and will still get you a working Oracle RAC on ISCSI. Even if you are setting it up on a Real SAN, it will still get you done, smoothly.

Oracle RAC on ISCSI , with screen shots! [ PDF ] (1.8 MB)

Oracle RAC on ISCSI, with screen shots! [ HTML tarball] (1.1 MB)