Well, thank you Tom for open my eyes to FreeNas and other grate products.
for my home i took my old computer, an old intel i5 with 8 GB of ram and have 12 TB of disks (7 usable with raidZ), works grate. a little bit heavy on the ram when loading all the data to the disks, steady about 6 GB of RAM under load. but for a home usage and to learn the system it is perfect.
it just works. if possible i will try to implement this in my work to, if my bosses want to listen.
again, thank you!