About me: As my username states my name is Justin. I have been a Linux n00b/enthusiast for many years. I like aviation and technology, and my goal is to one day be a full time pilot

Hardware:
AMD Opteron 170
4GB DDR 400
10/100/1000 LAN
10/100 LAN
3 x 1TB Western Digital HDD
1 x 500GB Western Digital HDD
1 x 750GB Segate External HDD
I would like to setup the HDA too maximize the space, but also protect my data. I was thinking some type of RAID, but I wasn't exactly sure what would be best. I currently have 450GB of data, mostly music I have ripped from disc, pictures from the past 10 years, and some movies. I plan on upgrading my router and switch soon, so I can have Gigabit LAN for the whole network.
Justin