I wanted to get some advice on Raid5 and Raid 1+0.
RAID5: You will need at least 3 disks. Net. capacity will be 2 disks then.
RAID1+0: You will need at least 4 disks. Net. capacity will also be 2 disks then. Will be faster than RAID5
In general I would advise to buy a fast SSD nowadays instead of filling up your computer with a pile of power consuming, noisy, heat generating conventional drives. At least if we a talking about a desktop. If you need a lot of space, think about a NAS solution as others mentioned before.
