Which of the following hard drive parameters are symptoms of server bottleneck conditions? Choose all that apply.

A.
Percentage disk time greater than 50%.

B.
Percentage disk time greater than 20%.

C.
Avg. Write Queue Length of 2 or greater.

D.
Avg. Write Queue Length of 1 or less.

E.
Avg. Read Queue Length of 3 or more.

Explanation:
You have server bottleneck conditions when the percentage disk time is greater than 50%, when the Avg. Write Queue Length is 2 or greater, and when the Avg. Read Queue Length is 3 or more.
Incorrect Answers:
B, D: You do not have server bottleneck conditions when the percentage disk time is greater than 20%, and the Avg. Write Queue Length is 1 or less.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 528-530.