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    Backup/Remote server


    I want to set up a backup server so when the primary is unavailable, the secondary will automatically receive requests. This secondary server will be off-site with a different IP.

    This is possible, right?

    Thanks,
    Jake
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    Hi,
    Yes, it is definately possible.

    However, I'd like to tell you that the term backup nameserver is a bit misleading. The way it works is:
    Client randomly picks up a name-server from all the listed name-servers.

    Primary,Secondary(Master,Slave) are treated with the same priority. So, even if your primary server is available - your secondary server will receive requests.

    Thanks
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    Sorry, I was a bit unclear in my question.

    I have a WEB server set up and am trying to find the best way for disaster recovery. But before I configure an offsite server and play w/DNS settings, I wanted to have some guidance.

    I don't want load-sharing or anything fancy. I just want to keep the site online in the cheapest way possible.

    Thanks for the quick response by the way.

    Jake
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    I just want to keep the site online in the cheapest way possible.
    One solution would be to publish the A records for your domain with low TTL's (around 1 hour) so that they are only cached for that long.

    In the event of a disaster with the first machine, you can change the A record to the IP of the backup machine, and the change will propagate across the internet in an hour's time (in theory - unfortunately there are a lot of broken caches on the internet).

    This assumes, of course, that your DNS servers are still available in the event of a disaster. The easyDNS service has four nameservers in three different countries to maximise DNS server availability. They've been up 99% (apart from a DoS attack that took place earlier this year), which is pretty impressive.
    Alex
    (http://www.alex-greg.com)

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