Tom, 

Thanks for the information provided, but I have one more question. I
have 10 - 30 LUNS 272GB in size housing millions of small files (77KB
size) across 16 windows 2003 media servers. 

Did you have a customized dedicated disk caching area or did you have
Netbackup manage the cache file sizing for you?

Thanks,
Chris Hall
   

-----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 tburrell
Sent: Friday, October 12, 2007 3:25 PM
To: VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Flash backup for mount-points Windows 2003


Chris,
we did experience one issue with timeouts for large volumes with massive
numbers of small files (ie: 500GB file system at 90% full, average file
size 11k), which was resolved back at MP4 for 5.1.  Otherwise our speeds
have always been significantly better than standard file backups without
any special tweaking.  We also found that using DSSU's in combination
with Flashbackup gave the best performance- not really a surprise there.


Of course, if you have mostly empty volumes you pay a huge price in
terms of size and overall time, but I'm sure you knew that.  In general
we have found that we get excellent results using the same settings that
work best in the rest of the environment.

Tom



Hall, Christian N. wrote:
> Tom, 
> 
> I had the syntax resolved thanks to all that have responded. However,
I
> noticed that my flash-backups speeds are less then traditional
backups.
> Are you aware of tuning suggestions other then buffer_size and # of
> buffers available that you have used? Have you experimented with
> fragment sizes? 
> 
> Thanks,
> Chris Hall
> 
> 
> -----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
tburrell
> Sent: Friday, October 12, 2007 2:41 PM
> To: VERITAS-BU AT mailman.eng.auburn DOT edu
> Subject: [Veritas-bu] Flash backup for mount-points Windows 2003
> 
> 
> Chris,
> To be a little more definitive- 5.1 does support Windows Flashbackup-
> it's kind of hidden on the top of page 105 of the "Advanced Client 5.1
> System Administrator's Guide"- they slipped it in as an example in
step
> 10.
> 
> We used it extensively (have now upgraded to 6) but it worked very
well.
> 
> Tom Burrell
> 
> 
> Hall, Christian N. wrote:
> 
> > All,  
> > 
> > Veritas Netbackup 5.1MP6  
> > Master server Solaris 8 
> > T9940B tape drives X 26  
> > ACSLS 7.1 
> > SSO  
> > Windows 2003 media servers X 20  
> > Emc Symetric storage  
> > EMC Clarrion Storage 
> > EMC 9820-E HBA 
> > Cisco 9513 SAN 
> > Quantum DX-100 VTL 
> > DECRU 1020 
> > 
> > According to VERITAS published documentation I am reading.
> > 
> Fash-backups does not support mount-points on version 5.0. Does this
> also apply for 5.1? I have not found documentation for 5.1 that says
the
> contrary. Is there anyone out there that's using flash-backup with
> mount-points with 5.1?  Any help would be appreciated.  
> 
> > 
> > Thanks, 
> > Chris Hall
> > 
> 
> 
>
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