raid and partitions

[v3n0m_dk]

hello all

im looking at getting either 1 or 2 hitachi t7k250's and had the following question,

what is the best raid to use for speed?

and how i would do this?

also, as a quicky, does making a seperate small partiton specifically for windows then having another partition for program files make any differance to performance?

cheers

 

[v3n0m_dk]

cheers,

is there a noticable gain? as i backup to an external drive