DNS Reliability

Jean-Francois Mezei jfmezei_nanog at vaxination.ca
Fri Sep 13 20:01:51 UTC 2013

On 13-09-12 21:53, Larry Sheldon wrote:

> I expect 100.000%
> I'll accept 99.999% or better.

At these numbers, one has to start to count failover time. A "system"
can be disaster tolerant but take 2 hours to recover fully, or it could
also recover within a couple of seconds. It depends on architecture and
available services. And in networking, you also need to consider
internal and external routing update propagation times.

More information about the NANOG mailing list