All the data is on EMC via a SAN, so RAID-1.





                                                                                
                                   
                    "David A.                                                   
                                   
                    Chapa"               To:     Bruno.Bossier AT comparex DOT 
be                                         
                    <david@datasta       cc:     veritas-bu AT 
mailman.eng.auburn DOT edu                                 
                    ff.com>              Subject:     Re: [Veritas-bu] Backing 
up a large amount of small files    
                                                                                
                                   
                    10/30/2002                                                  
                                   
                    18:03                                                       
                                   
                                                                                
                                   
                                                                                
                                   




Well, I did see something like this at a client and I always found the best

solution to something like this is to just format the dang thing :-)

But Seriously now...

What RAID level, 5?

RAID5 is great for writes but not for reads, and with as many reads as you
need
done for this backup you would definitely hit timeouts.  This is exactly
the
problem one of my current clients is facing.

What about the last time SCANDISK was run?  We found a heavily fragmented
disk
caused these types of timeouts as well.

Some of the other things we tried was to break up the server backup at the
file
list.  This was a bit more labor intensive, but it did work to some degree.

HTH

David

Quoting Bruno.Bossier AT comparex DOT be:

> We have a server with a directory which contains over 3 million files for
a
> total amount of nearly 150 Gb. We are trying to back this up in a
> reasonable amount of time (12 to 14 hours maximum). OTM is enabled. We
have
> not succeeded so far. A lot of time is lost at the beginning of the
backup
> when the backup is going through the directory structure to check all
> files. This takes several hours. The first we already did until now is to
> set the maximum cache size to 0 (unlimited). This stopped the errors we
saw
> in the Windows eventlog when OTM is started and then aborted after 40
> minutes, then restarted again ....
>
> Can someone give some suggestions to speed up this backup ?
>
> Thanks,
> Bruno
>
>
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