First of all, no you can't. RAID uses entire drives.
As to the best RAID type for data storage, it depends on what you want. RAID0 increases both space and maximum transfer speeds, but is very vulnerable to data loss and much harder to recover data once failed than a single drive. It isn't even RAID, since the 'R' stands for 'Redundant.' The short-stroking will be determined after the RAID is made, when you partition the drive.
In most cases, the best RAID for data is no RAID at all. Can you explain what it is that you want to accomplish, and why a single high-speed HDD isn't adequate? What do you intend to gain from using RAID? If we understand the particular need, we can make better choices.