>
> OK, here is your favorite not know nothing asking another question.
>
> I am about to install RedHat 5.0 as an upgrade to my 4.2 machines. These
> machines cannot go down, anything I should know before I undertake this. I
> have a test machine that I will do first, but that is all, seeing that my
> 4.2 was taken by the guy who left.
>
> 2nd question, and my topic, is there anyway to set up redundant servers that
> mirror or mimic each other so that if one failed, such as my fan one day,
> the other one would keep things running smoothly. Is this possible? How do
> you go about starting? Where to look?
You're best to get the new OS up and running on the test machine with all
the necessary configs and data, a different IP address, start up a dummy
or IP alias of the old machine while unhooking the old machine from the
net. Clear your other machines and routers [on the LAN] arp cache.
As far as redundancy to reduce failure, the first thing to do is to use
high quality components. Use fujitsu drives instead of quantum, use
quality power supplies, brand name ethernet such as DEC and 3com,
etc... Many services like email and DNS are built to operate from multiple
machines without the need for redundant hardware. Find out what is likely
to fail and take steps to prevent it from doing so.
--
/*
Jason Philbrook | Midcoast Internet Solutions
[EMAIL PROTECTED] | Internet Access, LAN, WAN, and Linux
www.midcoast.com/jp/ | Service and Consulting for Midcoast Maine
*/
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