We use Data Domain here (now owned by EMC which also has Avomar).   The
DDs do get really high deduplication ratios and have been fairly stable.
I'd definitely recommend that kind of dedupe (there are different
kinds).   This kind does the dedupe on the DD itself rather than
deduping on your server and pushing it to storage so doesn't have any
more impact on server CPU/memory than going to tape.

Of course you still need to make sure you're planning for offsite
storage as they like any other medium will fill up eventually - we
typically run ours around 90% of capacity even doing dedupe.   DD does
offer the ability to put units at an offsite location and transfer
directly from the onsite ones to the offsite ones but we don't use that
(yet).

On top of everything else restores from the DDs as opposed to tape are
incredibly fast.

You'd want to be sure you look into how you're connecting.   DDs offer
fibre channel but it is an addon cost.

-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Justin
Piszcz
Sent: Thursday, April 01, 2010 6:28 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] NBU7 / De-Dupe?

Hi,

Is anyone using de-dupe?

What kind of savings are you seeing?

Justin.
_______________________________________________
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
 
Proud partner. Susan G. Komen for the Cure.
 
Please consider our environment before printing this e-mail or attachments.
----------------------------------
CONFIDENTIALITY NOTICE: This e-mail may contain privileged or confidential 
information and is for the sole use of the intended recipient(s). If you are 
not the intended recipient, any disclosure, copying, distribution, or use of 
the contents of this information is prohibited and may be unlawful. If you have 
received this electronic transmission in error, please reply immediately to the 
sender that you have received the message in error, and delete it. Thank you.
----------------------------------
_______________________________________________
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu