Hello,
I think this topic has been covered extensively within last 6 months or 
so, please search the archive, the only advise i have to give you is that 
VTL will require additional  management, complexity and licensing, while 
disk if managed efficetely may be easier alternative, if you require 
replication and dedupe also then VTL may provide that features and may be 
worth a look.
Thanks




Len Philpot <Len.Philpot AT CLECO DOT COM> 
Sent by: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
03/13/2009 02:51 PM
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EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>; Please respond 
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Subject
Backup to disk with Networker - A couple of questions






We're looking to go to backup to disk next year when we refresh our 
production environment. Initially we took a look at VTLs, but the price 
was high enough to push us back to just plain disk instead. Now, we're 
being told VTLs are much more affordable (so far, they still don't look 
TOO affordable, but that's another discussion). Right now, we running 7.2 
on Solaris, writing to SDLT320. We'll probably end up on 7.[45] by the 
time we upgrade.

Anyway...

Is anyone using a VTL? If so, what are some pros/cons as compared to just 
using AFT devices and managing the disks in the usual manner? We're a 
moderate size environment (120-odd clients, etc.).

Also, I need to try and build a picture of just how big our overall backup 

footprint is per retention period, for capacity planning purposes. I know 
I can get sizes from mminfo (totalsize, sumsize, etc.) and even from the 
savegroup completion reports, but is there an easier way to get an overall 

total size?

Thanks.
--
   Len Philpot 

   Cleco IT Network Services, PGO3 - ext 7167
(318) 484-7167 

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