HW9

Class 25:

• Exercise 7.8: "Suppose the daytime processing load..." (15 points)

Class 27:

• Exercise 7.29(a) and (b): "Suppose a disk drive has the following characteristics...5 surfaces..." (15 points)
• (This question is not taken from the textbook. Please label it as "Class 27 extra question.") Answer the following question, and explain your reasoning in 2-3 sentences of your own words: How many disk failures can a RAID5 system tolerate? (10 points)