I believe you are correct, I asked if it was possible to do it with tape 
(crazy!) idea but no response yet =)  It looks like its limited to 
Puredisk/NBU7 disk tool.

On Tue, 6 Apr 2010, Chapman, Scott wrote:

> Has anybody tried client side de-dup with something other than a
> puredisk pool?  (puredisk or netbackup 7 disk pool)  It is my
> understanding (which could be incorrect;-) that you can't use netbackup
> 7 client side de-dup with any other type of disk pool.  ie  you can't
> use data domain on the backend when using client side dedup.
>
>
>
> Thanks!
>
>
>
> Scott Chapman
>
> Senior Technical Specialist
>
> Storage and Database Administration
>
> ICBC - Victoria
>
> Ph:  250.414.7650  Cell:  250.213.9295
>
> From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
> [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of David
> Stanaway
> Sent: Friday, April 02, 2010 6:29 AM
> To: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: Re: [Veritas-bu] NBU7 / De-Dupe?
>
>
>
>
> These number aren't that hot compared to DataDomain from my use of it.
>
> We are seeing 86TB of backup images occupying 4.4TB of phys disk.
>
> On 4/1/2010 12:07 PM, Jon Bousselot wrote:
>
> I set it up in a small test environment, and started backing up three
> clients into a deduplication pool exclusively.  2 windows and 1 linux
> system
>
> The first pass wasn't that impressive, maybe a 5% to 10% de-dup ratio
> and it took a bit longer than just streaming that same data to tape or
> disk.
>
> The second pass had a 90% deduplication ratio, mostly because just 1
> week had passed since the first full backup and not every file changed.
>
>
> After three weeks, I had about 300GB of data deduplicated down into
> about 90GB of disk space.  The kbytes total reported from the catalog
> said 300G, and df -k said 90G.
>
>
>
> The data content of the three systems is typical for a user workstation.
> Email, photos, miscellaneous files.  De-dup let me put many versions of
> those same files into a backup without actually having many copies of
> that file spinning on disk.
>
>
>
> And then the disk holding the de-duplicated data developed a bunch of
> bad sectors and I lost it all.  Once I rebuild it, I'll check out the DR
> process for protecting your de-dup database and files.
>
>
>
> I also want to test client side de-duplication to see if that helps
> stream data compared to media server de-duplication alone.  The
> media/master server is a quad core with 8g ram, and the clients are a
> desktop and a laptop.  After seeing it run and observing the space
> savings it generates, I think it is a very creative way to solve some
> (not all) problems.  It is definitely not a "set it and forget it"
> technology.  You still need to monitor its utilization similar to how
> you would monitor basic disk or tape usage.
>
>
>
> -Jon
>
>
>
> ________________________________
>
> From: Justin Piszcz <jpiszcz AT lucidpixels DOT com>
> <mailto:jpiszcz AT lucidpixels DOT com>
> To: veritas-bu AT mailman.eng.auburn DOT edu
> Sent: Thu, April 1, 2010 3:27:36 AM
> Subject: [Veritas-bu] NBU7 / De-Dupe?
>
> Hi,
>
> Is anyone using de-dupe?
>
> What kind of savings are you seeing?
>
> Justin.
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>
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