2 EMC a data center company is developing new testing softwa

2. EMC, a data center company is developing new testing software for servers. They have built 300 prototypes to test. They would like to have 80% confidence that the failure rate is less than 0.000001. They want you to design a reliability test. a. If you can allow up to four fails, how long do you need to run the test? b. Due to the sudden acquisition by Dell labs, you change the plan to allow up to 5 failures and increase the confidence level to 95%. How long should the test be?

Solution

a)

0.80*300 = 240

240 / 4 = 60

b)

300*0.95 = 285

285 / 5 = 57