: Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
You will get little to no dedupe if your DBA or DB agent performs any
compression or encryption on the db backup before it gets onto the DD. Always
note, what you will get and what someone else will get will always differ
somehow, so take
Hello Sandesh
We have 4 DataDomain systems two at each of our main sites. We replicate
between both sites. We are using the OST option with Storage Lifecycle
Policies. we are currently running Netbackup 6.5.6. It is running very
well. We do not use the VTL option. The only problem is that
The OST plugin will help you with the offsite copy to your duplicate DD
appliance because the use of optimized duplication, available when using OST
and NBU, reduces the bandwidth used to duplicate images, speeding up the
duplication process.
Using an SLP (Storage Lifecycle Process) to
[mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Mark Glazerman
Sent: Thursday, April 14, 2011 10:29 AM
To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU
Subject: Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
The OST plugin will help you with the offsite copy to your duplicate DD
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
The restriction we found when we looked into this in 2008 was that the DD only
supported one 'LSU'. That meant that a single DD appliance could only be used
by a single NetBackup domain. We wanted to have few appliances and many
domains, which PureDisk (and now the Symantec NetBackup 5000)
I wouldn't recommend a VTL with NBU at all as NBU works extremely well
using Disk Pools/Disk Staging Storage Units. Making your disk look like a
bunch of tape drives just adds more management and complexity and defeats
the purpose of disk, IMO. On a side note, because SLPs and OST work
