When replacing hard drives, which of the following statements are TRUE? Choose all correct options.

A.
All hard drives that are not hot-swappable must be replaced after first turning off power to the specific server.

B.
For ATX-type systems, you do not need to remove the power cord.

C.
All previously installed software must be reinstalled when you perform a server upgrade.

D.
All of the above.

Explanation:
When replacing hard drives, those hard drives that are not hot-swappable must be replaced after first turning off power to the specific server. With server upgrades, all previously installed software must be reinstalled when you perform a server upgrade.
This includes reinstalling of the operating system and system component drivers.
Incorrect Answers:
B: It is for ATX-type systems that the power cord must be removed.
D: Only A and C are TRUE.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 386-387.