Really?  That's odd because from my experience I've never found tape to
tape as fast as disk to tape.  I guess it depends on a lot of factors,
but generally speaking I've gotten better speeds going from disk, mainly
because read times are faster from disk (especially properly configured
local disk).

See Ya'
Howard


> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
> Of Allen S. Rout
> Sent: Tuesday, October 14, 2008 10:50 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: [ADSM-L] Backup order
> 
> >> On Tue, 14 Oct 2008 10:08:54 -0500, Howard Coles
> <Howard.Coles AT ARDENTHEALTH DOT COM> said:
> 
> > The best I can remember you can't "migrate" into a copypool.
> 
> Right. :)
> 
> Additionally,
> 
> >> -----Original Message-----
> >> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On
> Behalf
> >> Of Orin Rehorst
> >> Sent: Monday, October 13, 2008 5:20 PM
> >> To: ADSM-L AT VM.MARIST DOT EDU
> >> Subject: [ADSM-L] Backup order
> >>
> >> Our TSM was set up to nightly:
> >>
> >> 1. backup the VTLpool to copypool
> >> 2. backup the tapepool to copypool
> >> 3. migrate stg VTLpool (to tapepool)
> >>
> >> Step 2 is tape-to-tape and therefore slow.
> 
> I think that you will find tape-to-tape to be as fast or faster than
> disk-to-tape.
> 
> - Allen S. Rout