[CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[John R Pierce]

Scott Silva wrote:
> You can make LVM over raid 1's in Disk Druid, but I don't think it will do
> raid 10. And you cannot boot from software raid 5 (yet).
>   

a LVM over several raid 1's is effectively raid10 as LVM will stripe the 
volumes across the devices.   It would be nice if  LVM could do 
mirorring too (like LVM on AIX does) and was tighter integrated with the 
file system tools (again, like LVM on AIX...  grow a LV and it grows the 
JFS thats sitting on it, transparently and online).