Roughly, what percentage of users will reach changed DNS?

Posted by user3722246 on Server Fault See other posts from Server Fault or by user3722246
Published on 2014-06-11T08:20:57Z Indexed on 2014/06/11 9:27 UTC
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dns

If my main server go offline for some reason for +1hrs, I'm planning to make a DNS change so users will access secondary server. It is not a perfect solution to decrease downtime but it is simple and would work. I'm not sure about its usefulness. So I have a question.

If I'm going to make a DNS change to an A record for my domain (changing from one IP to another), what percentage of users are moved over to the new info in 2hrs? (roughly)

I know this is a vague question and there are lots of variables but any input is welcomed because I had painful downtime experiences and don't want to experience it again.

Thanks

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Roughly, what percentage of users will reach changed DNS? - Developer IT

Roughly, what percentage of users will reach changed DNS?

dns

Related posts about dns

Master/Slave DNS setup vs. rsync'ed DNS servers

Updating Windows DNS records from a remote windows DNS server

OpenVPN DNS: VPN DNS stomping local VPN

Random DNS Client Issue with BIND9/Windows Server 2003 DNS

DNS Tools - DNS and Few of its Concerning Terms and Tools

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