multiple volume tape utility?

[Martin Weinberg <weinberg@osprey.astro.umass.edu>]

I have a very long (e.g. 80GB) input stream that I want
to dd onto a tape (DLT).  I'm in a quandry on how to do
this.  Sounds like an FAQ but can't find a pointer anywhere.n

Is there a utility that will accept data from a pipe and
pause at EOT and let me change volumes?  Any suggestions?

--Martin