RAID 6 (ADG) vs. RAID 60 or RAID50 comparison and use case scenario comparison ?

Hi All,

I'm confused with configuring the new LUNs for my backup server purpose, so can anyone here pelase share some explanation as to when to use RAID 6 (ADG) vs. RAID 60 or RAID50 ?

Smart Array P411 In Slot 2

What about sector / track information ?
Does 63 is better / faster than 32 ?

Thanks in advance.