With ten drives, you'll want the most storage capacity for your money. I'd go with RAID 1+0 or RAID 5+1.
If you're doing a lot of read and write, bear in mind that RAID 5 is slower, and more than one dead drive will destroy the array. RAID 1 is better for performance.
If it were me, I'd put the OS on two disks with a mirror (RAID 1), and then the other four in a RAID 5 with mirror (RAID 5+1) if you want redundancy, or RAID 1+0 for better performance.
For maximum capacity, you can go with RAID 5 on all eight disks, but keep the above in mind.
So if you have ten 1TB drives, you'll get 1TB for OS, and 3TB in RAID 5+1, or 4TB in RAID 1+0.
Gosh I hope that makes sense.