Klein, Kevin wrote:
Our most recent disaster test proved to be a (drum roll) disaster. Fortunately
for me if not for my company, since I'm on z/OS, 95% of our problems were with
the Wintel platforms. We had z/OS (1.7) up in two hours but spent the
remainder of the test ironing out server restores. One item that has arisen
because of this is questioning if we need to keep our DNS on a Windows server.
We had everything restored and ready to go on z/OS by noon but had to wait
another 6-8 hours for a DNS before we could test WAS. Specifically:
* Does z/OS have any DNS services? If we could get a DNS going with z/OS
we'd have a definite ETA on when it's available.
* If so, is it recommended to run your DNS on z/OS?
* Again, if so, does anyone have any experiences/recommendations they'd
care to share?
I haven't begun looking at manuals yet. That will be my next step unless I get a concensus that it's fruitless.
As other have stated, yes z/OS can be a DNS server.
We run DNS on z/OS and Wintel. For some domains z/OS is the primary and
Wintel provides secondary. For other domains (say like the AD domain)
Wintel is the primary and z/OS is the secondary.
We too have had some issues with Wintel recovery at DR. At one test
when we had issues with name resolution because Wintel was not up and it
was the primary for that zone, I simply changed the named.boot (yes we
are still running bind V4) so that z/OS was the primary for that zone,
edited the last transfered copy of that zone so that z/OS was the
primary dns. Restarted named, and we were up and running with full name
resolution for zone we had problems with. Took all of 5 minutes.
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