If you only do filesystem backups and not a lot of on-demand user-database 
backups, you can probably get away with disk.  If you are doings 1,000s of 
user-initiated database backups though, disk will not cut it unless you 
had a massive infrastructure.  Using LTO-3 or LTO-4 drives with 10GBps 
for example is much cheaper.

Justin.

On Fri, 21 Sep 2007, ckstehman AT pepco DOT com wrote:

> This was in response the the question about eliminating tapes.  The IT
> department of Discovery Channel uses DataDomain and
> NetApp for all their backups.  They are running Netbackup6.0MP5. We had a
> tour sponsored by DataDomain.  We are considering
> going to disk based backups and are looking at VTL's and how all that
> stuff fits with Netbackup 6.5.  We will probably be upgrading
> to Netbackup 6.5 next year and adding some sort of disk based backup
> solution.  We are still evaluating vendors, no final decisions
> have been made.
>
> Hope this helps
>
> =============================
> Carl Stehman
> IT Distributed Services Team
> Pepco Holdings, Inc.
> 202-331-6619
> Pager 301-765-2703
> ckstehman AT pepco DOT com
>
>
>
> "Jeff Lightner" <jlightner AT water DOT com>
> Sent by: veritas-bu-bounces AT mailman.eng.auburn DOT edu
> 09/21/2007 10:41 AM
>
> To
> <ckstehman AT pepco DOT com>
> cc
> veritas-bu AT mailman.eng.auburn DOT edu,
> veritas-bu-bounces AT mailman.eng.auburn DOT edu
> Subject
> Re: [Veritas-bu] Tapeless backup environments?
>
>
>
>
>
>
> Cartoon Network.
>
> Did your post have a point?  Discovery Channel had a special on this?
> You?re annoyed at theoretical questions?  wtf?
>
>
> From: ckstehman AT pepco DOT com [mailto:ckstehman AT pepco DOT com]
> Sent: Friday, September 21, 2007 10:28 AM
> To: Jeff Lightner
> Cc: veritas-bu AT mailman.eng.auburn DOT edu;
> veritas-bu-bounces AT mailman.eng.auburn DOT edu
> Subject: Re: [Veritas-bu] Tapeless backup environments?
>
>
> Discovery Channel
>
> =============================
> Carl Stehman
> IT Distributed Services Team
> Pepco Holdings, Inc.
> 202-331-6619
> Pager 301-765-2703
> ckstehman AT pepco DOT com
>
>
> "Jeff Lightner" <jlightner AT water DOT com>
> Sent by: veritas-bu-bounces AT mailman.eng.auburn DOT edu
> 09/21/2007 09:57 AM
>
>
> To
> <veritas-bu AT mailman.eng.auburn DOT edu>
> cc
>
> Subject
> [Veritas-bu] Tapeless backup environments?
>
>
>
>
>
>
>
>
>
> Yesterday our director said that he doesn?t intend to ever upgrade
> existing STK L700 because eventually we?ll go tapeless as that is what the
> industry is doing.   The idea being we?d have our disk backup devices here
> (e.g. Data Domain) and transfer to offsite storage to another disk device
> so as to eliminate the need for ever transporting tapes.
> It made me wonder if anyone was actually doing the above already or was
> planning to do so?_______________________________________________
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