I have been doing tapeless backups for some time now (using tapedev
file:/...) and my backups have now gotten big enough that the following
is an issue:

First, to achieve parallel dumps, I use a holdingdisk.  This however
causes dumps to first be stored in the holdingdisk, then they are copied
to "tape", which in my case is a disk file.  With terrabytes of data
this now takes a long time (i.e., the "copy" phase).

I wish:

1. There was a way to force PARALLEL backups directly to "virtual" tape.

OR

2. If the holdingdisk and the virtual tape files are on the same
   filesystem, that amanda would just "mv" the holdingdisk copy to
   "tape" rather than copying it.

Would this be possible?  Hard?  Easy?  Or am I to dumb to realize the
problems either method would create?

Thanks,
Dick