I currently have a Freenas server setup for media sharing and am running Raid Z ( Similar to Raid 5 from my understanding ) I am running this off of old hardware ( core2duo E6700, 4gb of ram, and 4x2tb western digital caviar blue drives. So i have 5.18gigs available in my raid config ) I am worried that if this hardware dies i will be in a situation were it would be difficult to retrieve my data so i was wanting to buy a second system to backup everything on all computers in my house along with my current server. I was looking at buying a server based board with a intel xeon processor and ecc ram with 6x2tb western digital RE4 drives in other raid 5 or 6. Can someone give me some suggestions on which kind of raid setup would be the best as well as if i should bother buying server quality parts and drives along with what would be the best OS to run this. My current server is using a software based raid and am also wondering if i would benefit from going to hardware based raid. As it is right now i have speed issues when transferring from and too the drives as ill get 900mbps then will drop to 0 then back up. Any information would be greatly appreciated thanks for any help!