<Unless there is no equivalent... I've got the exact problem with the <DECsystem-10 I got earlier this year... it came with two RP06 drives. <They are 3-phase drives. We don't yet have three phase power (or a <close approximation of it), so cannot run the drives. Without the <drives, we cannot even load the microcode for the machine, so it is <a very large paper-weight. < <I've been looking of a non-three-phase replacement for the drives, but <we still would need three-phase to get the data off the disks I have. Why not a rotary phase converter, not the most efficient but buildable. That would allow running the drive off a single phase ckt that is heavey enough to take the load. Allison