Yeah, both ideas are good ideas. I am considering replacing the rz25, or adding a ZuluSCSI, that way I could assign one of the devices for backups. For now, I am just trying to preserve what's on the disk now. I want to do a fresh install once the CDROM arrives. It is an interesting exercise to me. Right now that RZ25 is running nicely without much noise so no rush I don't think, but still.
- Peter On Sun, Dec 7, 2025 at 5:00 PM Hans-Ulrich Hölscher via cctalk < [email protected]> wrote: > ... and the resulting backup will be much more reliable than the one > written by an old tape drive (which model, by the way?) on a possibly old > tape, if that ever succeeds. > I made especially frustration experiences using the once famous TK50 > drives, and even (a little) more recent DAT drives tend to fail very often > nowadays. > One disadvantage, however, is the necessary struggle with licensing, > although that can be managed with a little help. > Another option is a backup over network WITHOUT using an operating system > running on the system to be saved. Unfortunately it has up to now been > tested on MicroVAX I and MicroVAX II systems using a DEQNA or DELQA network > adapter only. It uses a simh VAX to send a special machine language program > to the backup target computer, on that the program in turn uses MSCP > commands to send a bit-wise disk copy back to the simh VAX. It is new, it > is unconventional, but it has been successfully tested on several MicroVAX > I and MicroVAX II computers. I think it is time to get out one of my > VAXstation 3100s (won't make any difference) and test it there. But you > will need to be patient – other projects have priority for the time being. > To be honest - I expect the program will need adaptation to the newer > hardware, especially the network adapter - MSCP hasn't changed I think. > > Am So., 7. Dez. 2025 um 22:27 Uhr schrieb Antonio Carlini via cctalk < > [email protected]>: > > > On 07/12/2025 20:27, Peter Ekstrom via cctalk wrote: > > > I managed to reset the system password so now I can login as well. It > > runs > > > pretty well. > > > I tried to make a tape backup of what's on the disk but it seems all my > > > tapes dirty-up > > > the head of the tape drive. Anyone know of a way to clean an actual > tape? > > > Pull all the > > > tape out and wipe it with a dry cloth? > > > > One option would be to create a SIMH VMS host, configure it to be in a > > cluster, configure your real HW uV3100 to be a satellite node (booting > > off a root on the SIMH host system disk), boot the uV3100 into the > > cluster, mount the uV3100 disk and back it up with BACKUP. > > > > That might be easier and quicker than cleaning a tape. > > > > > > Antonio > > > > > > -- > > Antonio Carlini > > [email protected] > > > > >
