Recommend backup setup?

I'm trying to create a good disaster recovery scenario. I run a small
web hosting company. Heres what I plan on doing.

I have a backup VPS server configured exactly like my primary hardware
server. So I now have two servers on the internet that both think they
are the same thing (we'll say myhostingcompany.com). So all the
hosted/customer domains are set to ns1.myhostingcompany.com and
ns2.myhostingcompany.com just like expected.

Now if my primary server goes down, I simply login to my domain
registrar and change the IP addresses for myhostingcompany.com to point
to the secondary server, which is already operating as if its
myhostingcompany.com. So after a few hours (specifically the TTL set on
the myhostingcompany.com zone file?) things recover and start being
served from the backup server. Then when my primary is fixed I simply
set the IP address back.

Is this a solid way of doing things? Any recommendations?

Ken Williams wrote:
> I'm trying to create a good disaster recovery scenario. I run a small
> web hosting company. Heres what I plan on doing.
>
> I have a backup VPS server configured exactly like my primary hardware
> server. So I now have two servers on the internet that both think they
> are the same thing (we'll say myhostingcompany.com). So all the
> hosted/customer domains are set to ns1.myhostingcompany.com and
> ns2.myhostingcompany.com just like expected.
>
> Now if my primary server goes down, I simply login to my domain
> registrar and change the IP addresses for myhostingcompany.com to point
> to the secondary server, which is already operating as if its
> myhostingcompany.com. So after a few hours (specifically the TTL set on
> the myhostingcompany.com zone file?) things recover and start being
> served from the backup server. Then when my primary is fixed I simply
> set the IP address back.
>
> Is this a solid way of doing things? Any recommendations?

That is almost exactly what I do although I have only had to do this once.

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