The old netnews copytape program from the 80s did the same thing. Somebody has a GitHub version of it: https://github.com/halfmanhalftaco/copytape
ᐧ On Thu, Jan 25, 2018 at 5:47 PM, Johnny Billquist <b...@softjar.se> wrote: > Zane - unless I remember wrong, there is a tool from DECUS to copy tapes > to a file image, and then get that back to a tape again. The RSX version is > called TPC, and I'm pretty sure it also exists for VMS. > > Using that, pull your physical tapes into files, copy the files over to > the simulated machines, and write them back out to simulated tapes there. > > Johnny > > On 2018-01-25 16:17, Zane Healy wrote: > >> Just to be clear, I’m looking to backup a physical machine, to a virtual >> tape drive, such that I can restore the data to either SIMH or a Physical >> machine. I don’t need to extract files. I can extract files (and I have >> with some of the most critical) via NFS to my Mac. >> >> Except for legacy hardware, most tapes I dealt with in the 90’s were in >> the 20-40GB range. Current tapes now are multi-Terabyte, but not something >> most of us can afford to have at home, which is why I’m looking to go this >> route. >> >> Zane >> >> >> >> >> On Jan 25, 2018, at 5:39 AM, Tim Shoppa <tsho...@gmail.com <mailto: >>> tsho...@gmail.com>> wrote: >>> >>> A couple of the tape image utilities I wrote or updated in the 1990s >>> have that limit. Let me see if they are still in the SIMH utility tree. >>> They never would’ve bitten me back in the 90s because the biggest reels I >>> ever dealt with were 3600 feet at 6250 BPI, less than 250 Mbytes. >>> >>> Tim >>> >>> On Jan 25, 2018, at 8:23 AM, Johnny Billquist <b...@softjar.se <mailto: >>> b...@softjar.se>> wrote: >>> >>> Hmm. None of the tools I wrote ever had that limit. They just process >>>> records and don't give a damn about absolute disk or tape position. >>>> >>>> Johnny >>>> >>>> >>>> Tim Shoppa <tsho...@gmail.com <mailto:tsho...@gmail.com>> skrev: (25 >>>> januari 2018 00:53:34 CET) >>>> >>>> Many common tape image tools as of two decades use 32-bit >>>> integers to carry offsets around and will be limited to 4Gigabyte >>>> tape image sizes. >>>> >>>> I don't think this is a fundamental limit to the tape image >>>> formats used by SIMH, just a common limitation of the tape image >>>> tools you might find from 20 years ago. >>>> >>>> Tim. >>>> >>>> On Wed, Jan 24, 2018 at 5:02 PM, Zane Healy <heal...@avanthar.com >>>> <mailto:heal...@avanthar.com>> wrote: >>>> >>>> What type/size of tapes does the VAX emulation support? I >>>> was looking through the doc’s and it wasn’t obvious to me. >>>> Is there a size limit? >>>> >>>> Thanks, >>>> Zane >>>> >>>> >>>> >>>> _______________________________________________ >>>> Simh mailing list >>>> Simh@trailing-edge.com <mailto:Simh@trailing-edge.com> >>>> http://mailman.trailing-edge.com/mailman/listinfo/simh >>>> <http://mailman.trailing-edge.com/mailman/listinfo/simh> >>>> >>> > > -- > Johnny Billquist || "I'm on a bus > || on a psychedelic trip > email: b...@softjar.se || Reading murder books > pdp is alive! || tryin' to stay hip" - B. Idol > > _______________________________________________ > Simh mailing list > Simh@trailing-edge.com > http://mailman.trailing-edge.com/mailman/listinfo/simh >
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