Mark-

I have seen the -alreadhost work when duplicating disk images - the
only requirement is that the path to the disk image files needs
to be identical on the alternate read host.

The original poster's question about duplication across the network
is describing a fairly common configuration.  This works just fine,
within the performance limitations of your network.

Kate's suggestion ("use alternate read host to allow a single host
to handle both the reading and the writing") is DEFINITELY the better 
performing option.

But using the altreadhost option relies on the fact that the 
original-writing host and the duplicate-writing host both have 
access to the source tapes.  (i.e. both hosts access tape drives 
in the same library)  I am not sure that this is Aleksandr's 
situation, since he talks about a local and remote library.

HTH
rob


On Tue, Oct 18, 2005 at 01:05:18PM -0600 or thereabouts, Mark.Donaldson AT cexp 
DOT com wrote:
> You mentioned "source tape drives" so this probably doesn't apply.  I tried,
> just for jollies, the Alt read server with a disk STU as the source and it,
> not surprisingly, failed.
> 
> -M
> 
> -----Original Message-----
> From: veritas-bu-admin AT mailman.eng.auburn DOT edu
> [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Greenberg,
> Katherine A
> Sent: Tuesday, October 18, 2005 9:08 AM
> To: Aleksandr Rainchik
> Cc: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: RE: [Veritas-bu] Vaulting / duplication across network
> 
> 
> You can set it up so that you're doing an *Alternate Read server* and
> read the tapes that are written on the source media server on the
> destination one so that the Vaulting is being done locally to one host.
> 
> Is that what you're looking for?
> 
> ~Kate
> 
> 
> -----Original Message-----
> From: veritas-bu-admin AT mailman.eng.auburn DOT edu
> [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Aleksandr
> Rainchik
> Sent: Tuesday, October 18, 2005 11:01 AM
> To: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: [Veritas-bu] Vaulting / duplication across network
> 
> 
> Hello,
> 
> Just wondering if anyone has experience with running NetBackup Vault
> jobs where source tape drives are on one media server and destination
> tape drives are on different media server, so you are doing Vault
> accross the network.
> 
> We are looking into doing local backups to Virtual Tape library and to
> use NetBackup Vault to copy those images to an off-site
> (real) tape library.
> 
> Thank you!
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