Hemant,

are you using FC or SATA drives on the 6140 S-vols?  Also assuming this is
virtualized behind the 9990V in order to use ShadowImage.  I'd probably
recommend some testing independent of NetBackup to see how fast you can
pull data off these volumes.  Such as use something like ufsdump, tar or
cpio output to /dev/null and watch the transfer rates with something like
"iostat -xcn 3".  If that looks good try manually allocating one of the
LTO4 drives and check the raw write speeds to the tapes in a similar
fashion.  If both check out ok then it's most likely a NetBackup tuning
issue.  Either way, at least you'd know where the bottle-neck is at
that point.

Hope this helps.

John

hemant.kalekar AT wipro DOT com wrote:
> HI
> 
>  
> 
> I am facing problems in backup speed for backing up SAP databases.
> 
>  
> 
> My setup is as follows
> 
>  
> 
> I am using shadow image ie split sync for backing up my SAP
> databases.The datasize is approximately 13TB.
> 
>  
> 
> My PVols are mounted from Hitachi 9990V storage and are attached to Sun
> M9000 server.
> 
>  
> 
> My Svols are mounted from Sun storage 6140 and are attached to Sun T5220
> which is configured as media server in veritas netbackup6.0.
> 
>  
> 
> I have L1400 Tape Library from which 4 LTO4 drives are presented to
> secondary server from which backup is taken,
> 
>  
> 
> Average speed per stream is 30MBPS which makes overall throughput of
> 4*30=120MBPS.backup time is around 36 hours.
> 
>  
> 
> Thanks and Regards
> 
>  
> 
> Hemant S Kalekar
> 
> 09819949422
> 
>  
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