uhxto :
so what raid i should get ? 0,1,2,3,1231331 ? what is the numbers?!
Most motherboards support only RAID 0, 1,5 and 10.
0 means almost twice the speed, at least for working with large files, but less data safety. One drive crashing loses data on all drives.
1 means a few % less speed and 50% less space but when a drive crashes you still have all the data on the other drive.
The others are combinations with 3 or more disks. It really depends on what you need and how many drives you can afford to buy.