... it's worse than your datacenter.
This site and all associated services are hosted at home, so downtimes and other things may occur. If you like something here, you're better off saving it for yourself ;)
While modern BIOSes are actually tiny operating systems that can update themself through the net, i still have a number of old machines that requires either Windows or a MS-DOS 'floppy' to update their bios.
There are tutorials everywhere explaining how to do so. But in my case, it's a bit special: i use my own git frontend, and have to deal with remote bare repos.
One thing is sure; compiling software on OpenBSD/macppc requires a lot of patience, even with several machines and distcc. I can't add machines indefinitely ... but since the move to clang, it's now possible to use an amd64 machine as a macppc distcc helper, and i'm going to detail how i did it.