RAID is recommended, as HDs are always the bottleneck in modern computers.
Read our RAID guides . Using Stripe you use 2 or 4 hard drives making one big, which is faster than one single hard drive. Then, when the file is about to be read again, it happens at the same time on the 2 hard drives, and the time reading the file will show off to be much faster than using one single hard drive. In practice it's not always possible to achieve these heights, however test have shown that it's close. If you use 4 hard drives in a RAID 0 system, the bandwidth in the controller might become the bottleneck.