The VTL can compliment a TSM installation where you have a real tape
library (RTL) manager and RTL clients.  Adding a LAN-Free agent to a RTL
client is greatly simplified when the RTL client is also attached to
it's own VTL.  The RTL client can be the library manager for the VTL and
share the virtual drives to the LAN-Free agent(s).  With several
LAN-Free agents, a VTL can easily be provisioned to provide additional
virtual drives without impacting the RTL.

Cheers,
Neil Strand
Storage Engineer - Legg Mason
Baltimore, MD.
(410) 580-7491
Whatever you can do or believe you can, begin it.
Boldness has genius, power and magic.


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Colwell, William F.
Sent: Wednesday, April 16, 2008 1:15 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] TSM being abandoned?

I have been configuring a new TSM server since last November.  At first
I wanted a VTL.  But when I learned from the Oxford symposium
presentations that TSM would have its own dedup in version 6, and
considering the cost of the vtl, I ditched it and ordered a lot more of
SATA arrays for less money.

I think in a few years after v6 is widely installed, VTL's won't look so
good for TSM sites.  Assuming it all works of course.

your VTL vendor may just have been whistling past the graveyard.

Bill Colwell

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Paul Zarnowski
Sent: Wednesday, April 16, 2008 12:08 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: TSM being abandoned?

Deduplicating VTLs fit better into NBU sites.  TSM's progressive
incremental methodology already reduces the data stream, making deduping
VTLs less of a "win", though it can still be beneficial.  My point is
that VTL vendors may not look as positively on TSM as they do on other
less-efficient backup solutions, because they don't sell as much VTL
product to them.  IMHO.
..Paul

> A VTL vendor said he is seeing a number of mid-sized businesses
> migrating from TSM to NBU (Symantec). Do you think this is true? My
> concern is that the pool of support techs will shrink and put us in a
> bind.
>
> Regards,
> Orin
>
> Orin Rehorst
> Port of Houston
>

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