- Forum: Current Mac Hardware
Again, it depends on what you need from your RAID. For fault tolerance, you need to consider how many more reads and writes a given RAID level adds to achieve redundancy. Increasing the number will decrease the life span of all the drives involved (even if the RAID level allows for one or more drives to fail). And also, ensuring that you have drive diversity (different models and production runs) is important to decrease the probability of multiple drives failing at once.