How does Raid10 perform for you?  If you have the space available, you 
could also make 2 raid0 arrays, and then backup to one, and then rsync 
to the other after your bacula run.


Chris Picton wrote:
> On Fri, 26 Sep 2008 12:18:51 +0200, Adrian Moisey wrote:
>
>   
>> If RAID5 is slow and you don't care about redundancy, then I would say
>> RAID0 (or LVM) over the disks.
>>     
>
> Just a quick test I ran using
> dd if=/dev/zero of=/mnt/store/00/bigfile bs=1M count=8192
> just to get a basic idea of speed:
>
> Raid 5: 8589934592 bytes (8.6 GB) copied, 302.948 seconds, 28.4 MB/s
> Raid 0: 8589934592 bytes (8.6 GB) copied, 27.2641 seconds, 315 MB/s
>
> The Raid 5 will not be able to keep up with my network cards...
>
> Regarding redundancy, If I were to use individual disks, I would have an 
> extra management overhead, to ensure that each individual disk does not 
> run out of space, but a single failure would not lose *all* my data.
>
> Can I get bacula to automatically backup to multiple devices for a single 
> job, to spread the backups in case of a single failure?
>
>
>
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