[CentOS] Race condition with mdadm at boot [still mystifying]

[compdoc]

>On the particular Supermicro motherboard I'm using, there is a very
>long delay (10 or 15 sec) between power-on and initiation of visible
>BIOS activity, so all disk drives have ample time to spin up and stabilize.


Yeah, I have used Supermicro in the past and they had the same long pause
when you turn them on. Good boards, except I had one die recently.

I was wondering how many drives total, and how many watts the PSU is?

Also, is the controller's firmware up to date?