Yes, I agree with you that it is a one time setup if your DSSU is pretty
much static.  As for me, I am an outsourcing company and have a constant
growth in new servers that requires backup.  I just feel that it would
be easier to add storage to a VTL instead of a DSSU.  Also, what I am
trying to do is have my cake and eat it too.  By writing both to a VTL
and a real library at the same time (same physical library using ACSLS
to divide the library), I can double my capacity during backups without
adding more costly tape drives.  And if the VTL will migrate to a
physical tape without NetBackup, that is all the better.

Ken

-----Original Message-----
From: K Chapman [mailto:tech2187 AT yahoo DOT com] 
Sent: Saturday, November 19, 2005 11:34 AM
To: Lee, Kenneth (SBS US); Ed Wilts
Cc: veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] VTL questions

--- "Lee, Kenneth (SBS US)" <kenneth.lee AT siemens DOT com>
wrote:

> The reason that I don't want to use DSSU is because
> there is more
> management than a VTL.  For example, if I required
> more disk for DSSU, I
> would have to attached the new disk, zone it,
> possible rebooting the
> server to see the new disks, size the DSSU correctly
> (to match the
> volume/size of my backups) so as to keep a low
> overhead during the
> reclaiming process of storage when the DSSU is full.
>  With a VTL, I add
> disks to the VTL, inventory the physical tape
> library and I am done.
> 
> Ken
> 

but isnt add/zone/discover a one time setup cost?  i
have a few disk stus (not staging) and once setup, i
dont have to do anything to them.  

we use the disk stus as staging and long term space. 
under 4.5, there was no dssu so we scripted out things
to free up space and perform much of what dssus and
vault do.  weve upgraded to 5.1 and havent had the
need to swap over to the dssus as of yet as the normal
disk stu works fine for us.  the cost of a vtl as
opposed to just adding some disk to the san also made
it not a good route for us.  that being said, folks
have different reqs than i so vtls may be a far better fit.

aaarrrggghhh!!!!
FreeBSD rocks


        
                
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