We never got OST license here but use Deduplication.    We do it using 10 GB 
Ethernet NFS mounts from the Dedupe appliances on each of our master and media 
servers.    It may not be cheaper in the long run to buy a 10 GB switch and 10 
GB HBAs for every server (although some now come with embedded) than using OST 
(especially if you already have a fibre san).   Here our solution evolved from 
1 GB NFS to the 10 GB with switch so has been done over time.    Both the Data 
Domain and the Quantum DXi dedupe appliances allow for the 10 GB (which runs at 
fibre speeds but does Ethernet instead of SCSi).

My understanding is that most of the Dedupe appliance makers allow you to do a 
setup to wherein you have one (or more) unit(s) on site and similar offsite and 
do background synchronization from the onsite to offsite to avoid having to 
send tapes.   Here we are still doing Dedupe onsite but duplicating to tapes to 
be sent offsite (again because of evolution - we used to backup directly to 
tape).





-----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 Martin, 
Jonathan
Sent: Wednesday, October 15, 2014 8:25 PM
To: VERITAS-BU AT MAILMAN.ENG.AUBURN DOT EDU
Subject: [Veritas-bu] Deduplication with OST

All,

We are currently running 7.5 on Windows and looking to add deduplication 
appliances as a backup target. Ideally, we would purchase the DPOO (OST/AIR) 
license to keep track of the images as they write locally and then replicate to 
DR, but that may not be a possibility based on budgetary concerns. Without 
getting into the specifics of which deduplication appliances we are looking at, 
I can safely assume that we can use a DSU or DSSU to write to a local CIFS 
target (e.g. \\Prod-Appliance\Backup1 replicated behind the scenes to 
\\DR-Appliance\Backup1). I am looking at a scenario where we use VM replication 
to replicate the master/media servers from Prod to DR. When I bring up this 
master/media in DR, could I use a hostname/DNS alias to make \\Prod-Appliance 
redirect to \\DR-Appliance?

I realize that this is essentially a "poor man's OST/AIR", but this may be the 
path I have to go down due to budgetary constraints. Is anyone doing anything 
similar to this? In previous versions of Netbackup I could crack open the 
catalog files to modify the fragment locations (e.g. E:\Backup --> F:\Backup) 
but it looks like those pointers have all been moved (into the DB?)

Your ideas are appreciated,

-Jonathan
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