G.G., If the OP had asked about a scenario like you described I would agree with you, there is little difference. Using only four drives, a "possible two" is statistically close to being "fat chance of more than one."
However, the OP was talking about 24 drives. From a mathematical standpoint, it makes a lot of difference. It makes a difference in how much capacity you have to give up, as well as a difference in the POTENTIAL for surviving the loss of multiple drives. Again, from a practical standpoint, if redundancy is paramount, and you want the closest thing to a guarantee that you can have, a definite two beats a potential 2-12.
If one is going to hypothesize, one should do so using the parameters of the OP's query. Otherwise, why bother?
However, the OP was talking about 24 drives. From a mathematical standpoint, it makes a lot of difference. It makes a difference in how much capacity you have to give up, as well as a difference in the POTENTIAL for surviving the loss of multiple drives. Again, from a practical standpoint, if redundancy is paramount, and you want the closest thing to a guarantee that you can have, a definite two beats a potential 2-12.
If one is going to hypothesize, one should do so using the parameters of the OP's query. Otherwise, why bother?
