How to transfer data FAST?

It helps that I have SCSI Controllers on my operational PDP-11's. I use removable disk trays that allow me to move the HD's between PDP-11's, and more importantly to hook them up to a Unix box, at which point I can use 'dd' to back them up. The resulting disk images can be accessed via SIMH, E11, or burned to a CD-R and accessed on the real PDP-11 HW. I've managed to boot and install RT-11, RSX-11M, and RSX-11M+ from CD-R. I've yet to figure out how to do that with RSTS/E. I also typically have either a TZ30 (half-height SCSI TK50 drive), or a TLZ06 (4mm DAT) drive hooked up. I prefer to use DAT, however, RSTS/E software doesn't really like trying to be installed from DAT. Ethernet using either TCP/IP or DECnet is another option that I use to transfer data, but I try to only use that for small amounts of data. One of these days I plan to go wireless with my PDP-11. I'd also like to see if I can't get a SCSI DVD-ROM drive running, but considering the difficulty with getting a CD-ROM drive to work, I have some doubts on getting that to work. Zane