[rescue] Small servers (was Re: WTT: 1.5G of PC2700 for 1G of PC100)
shannon at widomaker.com
Wed May 7 21:07:32 CDT 2008
On May 5, 2008, at 16:15 , Ethan O'Toole wrote:
>> That's just a video->serial conversion.
>> I mean a BIOS designed to talk to serial devices, not a video
> The console redirection is actually a function where it sees the
> characters being written to the video BIOS and pushes them out of a
> serial port.
On some systems, sure, but not all of them.
> It is not a screen scrape.
It is if the BIOS does direct video writes, and several of them do.
> Anything that writes directly to the video card to speed up display
> will bypass PC serial consoles.
I have several machines where their console redirect is implemented on
the video card.
The bottom line is we need a BIOS that puts a command line up on a
real serial console, no video or BIOS translation, but real console
> I don't mind the PC stuff really. I mean, once a server is setup and
> deployed you don't really have to deal with it that much. Even on
> Sun and SGI boxes you don't really mess with the boot prom stuff
> once it's up and running.
The issue comes at 0400 when you have to drive out to a server, or
even fly out to it, all because they could not spend $1.50 in quantity
to have a real console.
Even at home, it's trivial to use a serial console box to work with
several boxes, but a bulky and ugly mess to do it with video.
"Where some they sell their dreams for small desires."
More information about the rescue