Whether doing duplication within NetBackup or using OST with something like 
Data Domain, this is a good read if using Oracle RMAN...

http://www.symantec.com/business/support/index?page=content&id=DOC3534



-----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 sandesh
Sent: Friday, April 22, 2011 4:10 PM
To: VERITAS-BU AT MAILMAN.ENG.AUBURN DOT EDU
Subject: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup

Thanks rhugga

I also have a quick question to all experts on dedup ratio that you see on 
database backup, for e.g. SQL, DB2 & Oracle.

What is the usual ratio you see with database backups using native application 
backup utilites or using NetBackup Agents? Does it make any difference do it?

Suppose if DBA's generates 1TB of SQL native database backup flat files for a 
given server and if I back up flat files using NetBakcup n keep it for 5 weeks 
essentially backing up 30TB of data then how much compression one would see and 
what factors does it depend on.?

Thanks.

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