>>From what I know, quantum DXi7500 has an option "path to tape" and sends the
data to the tapes from fiber channel. I will implement it to a customer
within the next month.

Also with the latest firmware, DXi7500 use OST to replicate to another
DXi7500 and netbackup is aware of the replication. I don't know if this is
over fiber of ip, but the direct duplication to tapes is over fiber

stefanos

-----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 cpreston
Sent: Tuesday, March 10, 2009 4:41 AM
To: VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] how to copy backups from data
domaintotapew/netbackup6.5



Wilkinson, Alex wrote:
> 
> What is an "OST interface" ?
> 


The OpenSTorage interface, a new way to use your Data Domain boxes (and
other boxes that support it) with NetBackup.  It's not NFS or CIFS, it is
its own transport.  It is also not VTL.  Think of it as a more intelligent
DSU. 

In the case of DD & Quantum, the data is sent over IP.  With Falconstor, the
data is sent over Fibre Channel.

With DD boxes (which is what started this conversation), the first
improvement you'll get simply by switching from NFS/CIFS to OST is a
significant increase in performance.   With all systems that support OST,
you also get what NBU calls "optimized deduplication," where NBU tells one
OST device to copy a given backup to another OST device.  The OST device (in
this case, the DD box) will use dedupe and replication to get the data
there.  Once there, it informs NBU.  Now NBU knows about both copies, just
as if it had duplicated it via bpduplicate.  Nice, huh?

The nice thing that OST is supposed to support is tape-out functionality,
where an OST device can copy it's backup to tapes and tell NBU which tapes
got which backups.  Again, just as if it NBU did the copy.

Here's my blog post about OST:
http://www.backupcentral.com/content/view/198/47/

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