Yeah but specifically how did you get NetBackup to backup a separate 
stream to each tape drive as that's the kicker? ;)


On Fri, 27 Jul 2007, Kevin Whittaker wrote:

> Oh, I had a spare 240 available, so I loaded ORACLE 10/Solaris 10 on it.
>
> I had a DBA created a database with 108GB of data in it.  Then we did a
> Level 0 (full) backup, that took 39 mins.
>
> Then we destroyed the database and restored it.
>
> Then we just kept doing it back and forth, testing different ways to do
> the backup/restore.
>
> Kevin
>
> -----Original Message-----
> From: Justin Piszcz [mailto:jpiszcz AT lucidpixels DOT com]
> Sent: Friday, July 27, 2007 8:24 AM
> To: Kevin Whittaker
> Cc: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: RE: [Veritas-bu] Has anyone done benchmarking of any sort
> with..
>
>
>
> On Fri, 27 Jul 2007, Kevin Whittaker wrote:
>
>> Recently I did quite a bit of benchmarking on restores with ORACLE
>> RMAN multiplexing.
>>
>> We currently do 4 channels to 1 tape.
>>
>> Our test backup was taking 39 mins, with a full restore time of 2
> hours.
>> And we tested other channels, and it seems that the restore time is #
>> of channels times the backup time.  So my restores are 4 times a long
>> as the backup.
>>
>> Well, we also tested sending each channel to different tape drives.
>> Well the same backup was restored in 38 mins!
>
> How did you accomplish this?
>
>
>>
>> So, I am in the process of modifying my VTL to have enough tape drives
>
>> so that we can un multiplex all of our backups.
>>
>> Also I will add vaulting a multiplex image takes longer than one that
>> is not multiplex.  And yes, my vault profile is set to keep
> multiplexing.
>>
>> Kevin
>>
>> -----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 Justin
>
>> Piszcz
>> Sent: Friday, July 27, 2007 6:50 AM
>> To: veritas-bu AT mailman.eng.auburn DOT edu
>> Subject: [Veritas-bu] Has anyone done benchmarking of any sort with..
>>
>> The delay on Multiplexed restores?
>>
>> Justin.
>> _______________________________________________
>> Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
>> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>>
>
_______________________________________________
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu