I just thought of this one, is it even viable?  ;-O
(This assumes the second system is a non-critical system.)
If it isn't viable, just consider it as humour:

On System #1 have a mirrored system (with hot-swappable drives.)

On System #2 have an unmirrored system with a User Volume 
Set with the same User Volume Set name as System #1 
(and the same type of drives of course.)

1) Shut down System #2

2) Remove the discs for the User Volume on System #2

3) De-mirror System #1

4) Pull the formerly-mirrored "secondaries" off System #1

5) Insert the ones removed from System #2 into System #1

6) Re-mirror System #1 (this will let them re-sync)

7) Insert the ones removed from System #1 in System #2

8) Start System #2

Alternatively, if you REALLY, really trust automatic
resynching of mirrored volumes, perhaps steps 3) and 6)
could be skipped.

> -----Original Message-----
> From: James Clark,Florida [mailto:[log in to unmask]]
> Sent: Tuesday, May 09, 2000 10:10 AM
> To: [log in to unmask]
> Subject: Re: Fast Backup from System to System
> 
> 
> What is your current connection? If 10Mb LAN use 100Mb LAN. 
> Also, what is
> the load on the system at time of transfer? Are the two 
> machines on a LAN
> segment of their own? Can they be connected only to each 
> other. Are you
> using Compression option of DSCOPY? What type of Disc 
> subsystems do you
> have? How much data are you trying to move? Check your I/O 
> bandwidth? How
> long should it take at burst rate, and normal? Don't expect 
> more than the
> hardware you have.
> 
> James
> 
> > -----Original Message-----
> > From: HP-3000 Systems Discussion [mailto:[log in to unmask]]On
> > Behalf Of NewsGroups Holger Schrörs
> > Sent: Tuesday, May 09, 2000 1:57 AM
> > To: [log in to unmask]
> > Subject: Fast Backup from System to System
> >
> >
> > Hi to the group!
> > Has anybody experiences with using a direct connection between
> > two HP's for
> > doing fast (additional) backups ?
> >
> > We have a HP918 and a HP979 and want to transfer a lot of data
> > from the big
> > system to the small system. DSLINE takes hours and if there is any
> > possibility we don't want to use Tapes.
> >
> > FTP also take a lot of time.
> > Is there any other chance?
> >
> > Thanks for a hint or solution
> >
> > Holger Schrörs
> > QVC Germany / IS&T - MIS
> >
> 
>