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

[Scott Silva]

on 2-18-2009 11:12 AM John R Pierce spake the following:
> 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).
Effectively and actually are two different things. Some people seem to be very
shy of LVM, even though it seems to be fairly mature technology. I didn't
think the LVM will stripe over the raid 1's by itself, I thought you had to
set stripes according to the underlying raid structure to get optimum speed.


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