--- "Zane H. Healy" <healyzh(a)aracnet.com> wrote: They are somewhat rare - I've seen three in my life, one was mine that vanished when the business it was at was abruptly sold (it was out on loan) :-( Other than the size, it's nothing remarkable - an 11/730 CPU in a box slightly bigger than a BA123. The RC25 has been hashed to death here, but for its day, for 52MB of storage on a VAX, it was somewhat compact. It's a .6 VUPS machine that may or may not be able to take the full 5MB that the 11/730-Z backplane should (power and heat and what not). I have seen one boot VMS 5.0, but there wasn't any elbow room. I'm somewhat interested, but only because I don't have a Unibus VAX up and running right now (I never got that DWBUA from Gunther to pass self-tests in my 8200 - not sure if it's my UET board, the cables, or the DWBUA itself). They are no slower than an 11/730, and quite a bit more portable. It's trivial to speed up the boot process to under 5 minutes, if you re-order the files on the tape. -ethan P.S. - speaking of tape, if the console TU-58 has gooey rollers, that *will* keep it from booting. Unlike the 11/750, the 11/725 and the 11/730 *need* the console TU-58 to come up from a cold start.