By Roddy Rodstein 02/17/2015
This post is applicable to Oracle VM Release 3.x
One of the most critical baseline infrastructure requirements for a cluster of Oracle VM Servers is uniformity of configuration. Without having a consistent baseline of drivers, BIOS, and firmware settings across the entire infrastructure, this inherently creates an unstable environment for the rest of the software stack.
AHCI mode may be necessary to recognize the CDROM device to perform an installation from CDROM.