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Re: Archiving disks to tape? (late 1970s)



schmidtd wrote:
On Oct 23, 7:38 pm, Linards Ticmanis <ticma...@gmx.de> wrote:

However I have never heard of such backup software, which I assume would
need to store whole-disk images to the tape, in whatever format. Did it
actually exist back in the day?

Hmmm.  That would be an interesting technique.  My first guess would
be that there isn't time to interleave the Disk II reading and
cassette writing, both of which are processor intensive/timing
sensitive operations.  Assuming there isn't time to interleave both at
the same time, one would have to do the disk reading and cassette
writing in 32k-ish chunks.  There is certainly space on a cassette
tape for, I dunno - several disks that way.  Signifying nothing, I
haven't heard of any software to do it.

Interleaving wouldn't make much difference since the transfer time
is dominated by the cassette speed.

-michael

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Home page:  http://members.aol.com/MJMahon/

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