Before you can perform any hardware or software upgrade for a server, all data stored and managed by the specific server must be backed up. Which of the following actions MUST be performed to do this? Choose all correct options.

A.
Notify all users.

B.
Perform backups.

C.
Shut down applications.

D.
Power down the specific server and the peripherals.

E.
All of the above

Explanation:
Each of the above mentioned activities must be performed before you can upgrade a server’s hardware or software. Because a number of unexpected issues can crop up when you perform server upgrades, it is imperative that you a perform a backup of your data being stored/managed by the specific server first.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 374-375.