Grading for HW5.

12 points total, 6 points for each problem.

Problem 1.  

-1.5 All information there, but speeds wrong, many of the numbers
don't make sense, problem with units (GB vs MB vs TB), ...
-.5 Mostly everything good, just a few small issue (e.g., 
speeds you quoted have different units, like Ghz vs MB/s).

Problem 2.

2 pts/part

Note: I don't think anyone did the mean time to failure correctly
for the RAID.  I am not taking off for that.