There is an odd issue occuring when installing GAiA on HP DL380p G8 with P420i Smart Array Controller. The installation is unable to find the drivers and none of the drivers on HP website work.
The problem occurs when using the built-in DVD-rom and the solution is described in Check Points solution ID sk87704-article
Solution: Boot and install using an external DVD-rom
Also, DL380p G8 is listed in sk77660 which means you need to use the option “Install Gaia on systems listed in sk77660” if installation hangs at “disabling IRQ”.