How to provide fail-over capability for servers?

[Bob Johnson]

It depends on what type of services the servers offer. Mail servers,
web servers, file servers, DHCP servers?  SMTP (the mail protocol) for
instance has built-in provisions for automatic failover.

- Bob


On 10/29/07, Stephen Allen <p0036343 at brookes.ac.uk> wrote:
> I'm completely new to this so some of my ideas may sound ludicrous...
> please put me right where necessary!
>
> I will have 3 net-facing servers which must be available 24/7.  I had
> planned to have an additional box located in a different building on the
> same site (in case of part power-outage) that will run VMware server and
> host all the fail-over servers.
>
> What options are there for providing automatic fail-over capability?  I
> had thought of running a cron job every minute that would test for the
> existence of the other server and assume its identity if it couldn't get
> a reply, but it feels like a 'sub-optimal' way of doing it.
>
> Can anyone give me some ideas I should be looking at?
>
> Many thanks,
> Steve :)
>
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