I just checked with my DD SE and you do not need to have your DD appliance 
setup as a VTL to be able to duplicate to tape using an SLP.  My original post 
was correct, backup destination will be DD#1, duplicate destinations inside the 
same SLP will be DD#2 and your tape drive(s).

Mark Glazerman
Desk: 314-889-8282
Cell: 618-520-3401
 please don't print this e-mail unless you really need to


-----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: Thursday, April 14, 2011 9:38 AM
To: VERITAS-BU AT MAILMAN.ENG.AUBURN DOT EDU
Subject: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup

We are in the early stages of implementing EMC Data Domain dedupe appliance and 
use Symantec NetBackup. I've a couple of questions about it for the experts. 

Plan is to have a DD appliance in 1 location and replicate data to another DD 
appliance in another location. Plan is also to generate a tape copy for long 
term archival at primary location. 

1.OST & VTL are both being discussed. Which option is most favorable in the 
industry? Are there any specific advantages that can make or break things?
2.VTL supports LTO3 drives at the most. Does this mean that we need to have 
LTO3 physical tape drives for duplicate copy or will LTO5 drives work?

Thanks in advance.

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