Jerome Fine replies: I seem to remember that my first (i.e. not the system I used at work sites) was a VT103 with a PDP-11/23 inside and a DSD 880/8 floppy / hard drive combo. The latter was an 8 MB RL01 emulation combined with RX02 (actually RX03 although DEC never released their version) 1/2 MB SSDD 8" floppy emulation. I seem to remember V04.00 of RT-11. The floppy served as the backup, but I found the floppy far too slow to be truly useful as compared with the hard drive. Plus, with only the single floppy drive, it would not have been possible to save files, etc. I agree that if someone had a dual RX02 floppy system without a hard drive, useful work could be done but much more slowly. I also seem to remember that the VT103 backplane was upgraded to 22 bit memory support and a Sigma RQD11-B MFM controller was briefly added to the backplane to support a Seagate 10 MB hard drive (was actually an old DEC RD51) that somehow was squeezed in beside the power supply. At one even shorter period of time, the VT103 backplane had a PDP-11/73 quad CPU, 4 MB of memory, DHV11 and a Sigma RQD11-EC controller that supported FOUR * 600 MB ESDI Hitachi hard drives although it was essential that all of the hard drives were placed OUTSIDE the VT103 since each required its own fan and all of the hard drives and their fans also used a separate external power supply. Sincerely yours, Jerome Fine -- If you attempted to send a reply and the original e-mail address has been discontinued due a high volume of junk e-mail, then the semi-permanent e-mail address can be obtained by replacing the four characters preceding the 'at' with the four digits of the current year.