Originally posted by HAVOC2k5
RAID 0 only provides a small boost in performance. Like in copying and transfering files in folders. But, RAID 0 isn't really ment for performance.
It is actually. That is the theoretical reason behind "RAID" 0. Obviously, the activities you are involved in plays a huge performance in the performance gain. The idea behind RAID 0 is to give multiple HDDs the ability to do simultaneous work when processing data. At the "most", the performance gain will be Mx(the performance of a single drive) - where M is the # of drives in the RAID 0 array.
But, this never really occurs - unless you build a test case just to produce this scenario. In a 2 drive array, if one HDD is performing an operation, a random read/write request has only a 50% chance of hitting the unused HDD. A sequential request (such as copying a file) will be better organized such that both HDDs are working simultaneously.
Anyways, the price can obviously be used to justify a RAID array. But, this wasn't the motivation behind designing it. This "price" scenario is only really useful when you are talking about the "premium capacity" HDDs. e.g. the highest capacity drives. In other instances, it is of no use - wrt price. For eample, getting 2x80GB drives is more expensive than getting a 160 GB drive.