If you want to minimize troubleshooting of hard drive issues where an additional hard drive is being added in a current RAID implementation, which of the following should you ensure?

A.
The brand and model of the hard drives must be the same.

B.
RAID compatibility must be ensured for the type of drive being added.

C.
RAID compatibility must be ensured for the drive connections being used.

D.
All of the above.

Explanation:
If you want to minimize troubleshooting of hard drive issues, you should ensure that the brand and model of the hard drives being used in your system is the same. Additionally, if you are adding a hard drive in a current RAID implementation, you must ensure RAID compatibility for the type of drive and the connections.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 383-384.