Redundant Array of Inexpensive Discs RAID is a technology th

Redundant Array of Inexpensive Discs (RAID) is a technology that uses multiple hard drives to increase the speed of data transfer and provide instant data backup. Suppose that the probability of any hard drive failing in a day is 0.002 and the drive failures are independent. Suppose you implement a RAID 0 scheme that uses two hard drives each containing a mirror image of the other. What is the probability of data loss? Assume that data loss occurs if both drives fail within the same day.

Solution

P = (0.002)^2 = 0.000004