What's best to do?? classically speaking

rhudson(a)cnonline.net wrote: I am not quite sure what the question is here. Someone can correct me if I am wrong, but I believe the largest single disk drive DEC ever sold that can be attached to a PDP11 (UNIBUS or QBUS) was the RA73 SDI disk at 2GB. Although SCSI interfaces were available from 3rd party vendors that can support larger drives, I don't think 60GB would be very appropriate for a PDP11. A DVD-ROM drive? Now that would be interesting if it was even possible. Maybe I can convert all my 9-track media for the 11/70 to a single DVD :) On a more serious side: I run RA72, RL02 disks, and a TU81+ tape unit on my 11/70, which are much newer than the machine itself. Although these devices are original DEC storage devices and are supported by later OS's, vintage OS versions were written for the storage devices of their time. Having these more "modern" storage devices, I find it difficult to run older OS versions that pre-date them. For instance, 6th edition AT&T UNIX supports disks such as the RK05 and RP04, but not the newer MSCP disks like the RA72. Running newer storage devices with vintage CPU's has its advantages in size, cost, serviceability, and availability, but can be a problem with OS versions that were not designed to support them. -- Doug Carman pdp11(a)bellsouth.net