How to Configure RAID for Maximum Drive Failure Tolerance
Understanding drive failure tolerance in RAID When you build a storage array, the number one question is usually: how many drives can I lose before my data goes with them? That number is what most people mean by drive failure tolerance. It is a straightforward metric on the surface, but the way it works changes depending on the RAID level, the number of drives, and even the size of the drives themselves. Getting the balance right means understanding not just the math but a