On Jan 19, 2009, at 7:30 AM, Mark Phillips wrote:
> After some more reading, I am a little confused about the debate  
> between RAID5 and RIAD10. I am interested in the group's opinions on  
> which is better - RAID 5 or RAID 10 and why? What experiences have  
> you had regarding installation, maintenance, and fixing problems? I  
> am running Debian testing.
>

You need at least 4 drives to implement RAID10, so your cost estimates  
need to go up accordingly.  RAID10 will give you better fault  
tolerance and better performance than RAID5.  The downside is the  
cost, since in RAID10 you will get less usable space per physical GB  
of disk.

http://en.wikipedia.org/wiki/RAID#Standard_levels
http://en.wikipedia.org/wiki/Nested_RAID_levels#RAID_1.2B0

alex