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