A couple of things that I did not see mentioned here which I experienced
was.... for Data Domain the VTL is an additional license and it does
limit the available mount points (or emulated drives), where a TSM file
based pool does not. Like Wanda stated earlier depends what you can
afford !

I myself have grown fond of using the file based approach, easy to
manage, easy to configure, and never worry about an available tape drive
(virtual or otherwise). The lan-free issue is something to consider but
from what I have heard lately is that it can still be accomplished using
the file based storage. If anyone has any info on it I would appreciate
it.

~Rick
Jax, Fl.

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Tim Brown
Sent: Monday, September 26, 2011 4:05 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] vtl versus file systems for pirmary pool

What advantage does VTL emulation on a disk primary storage pool have

as compared to disk storage pool that is non vtl ?



It appears to me that a non vtl system would not require the daily
reclamation process

and also allow for more client backups to occur simultaneously.



Thanks,



Tim Brown
Systems Specialist - Project Leader
Central Hudson Gas & Electric
284 South Ave
Poughkeepsie, NY 12601
Email: tbrown AT cenhud DOT com <<mailto:tbrown AT cenhud DOT com>>
Phone: 845-486-5643
Fax: 845-486-5921
Cell: 845-235-4255




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