Exact same drive needed for raid 0?

[Vegeta]

Hi i got a sata 2 westerndigital 16mb cache 250gb hd atm, do I need the exact same drive to run raid-0 or can I get say a bigger one? And if so does it have to be a western digital one?

 

[Vegeta]

Hmm buying another 250gb would be pointless then as this 250gb didnt last long lol, what kind of raid setup would be best and stable if i were to get say a 400gb hd?

And do you have to run two sata drives in raid setup? Dont know much about sata.

 

[Vegeta]

I just need a massive hard drive basically lol - I've used this 250gb hard drive up soo fast, I think I might opt for a 400gb hard drive and run it with this 250gb if possible?