Hi Andreas,

Great news!

In case that you have full control of your master DNS zone files and
you would like to speed-up the DNS synchronisation, you could consider
temporarily lowering the Refresh time setting in your SOA record from
the RFC-recommended value (~ 86400 -- 24h) to something more
aggressive like 3600 (1 hour) on Thursday (Feb 24) at the latest (the
refresh setting will also need time to propagate, which in the worst
case would be as long as its current refresh value, so if it is
anything higher than 86400, you should implement the change even
earlier). Also, don't forget to change the zone serial number and to
restore the old refresh value once the hang-over is completed and
changes are propagated (e.g. on Sunday, 27 Feb). This should help
reducing the number of inadvertently lost policies, by reducing the
window of opportunity to 1 hour in the worst case.

Kind regards,
Vedrin

On 16 February 2011 15:27, Andreas Maunz <andreas at maunz.de> wrote:
> Hi all,
>
> the date for switching the DNS entry for opensso.in-silico.ch to the new
> dedicated AA server has been fixed with Christoph for:
>
> Saturday, February 26, 10 AM CET.
>
> Altered DNS entries take some time before they are propagated across major
> DNS servers and caching mechanisms delay this even more.
> But by Monday morning, everybody should be fine.
> Database contents (policies) on the new server will initially reflect the
> state of Saturday, 6 AM.
> Thus, everything that is stored on the old server after 6 AM will be lost.
> The old server will be up at least until Monday.
> I will post the old and new IP adresses shortly before switching, so that
> you can check at any time if your favorite DNS server has already been
> updated.
>
> Regards
> Andreas
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