Hard Drives : 500 GB in Raid 0 and 1000 GB extra + 500GB external

Noobs won't understand this, Pros will laugh at me:

I have one 500 GB WD hard drive in raid 0 with a 250 GB WD hard drive. which makes it about 2x as fast but i lose 250 GB of memory. I actually tried it as a test and decided to not go back. Usually to put hard drives in raid they have to be identical, but i just wanted to try :)

Anyways i keep all my important stuff on the 3rd hard drive of 1000 GB and on an external HDD of 500 GB.

so in total i have 2.25 TB physically and 2.0 TB in active (without counting all the USB keys i have and the memory cards)