On Feb 2, 2010, at 15:17, Tim Cook wrote:
On Tue, Feb 2, 2010 at 12:54 PM, Orvar Korvar wrote:
100% uptime for 20 years?
So what makes OpenVMS so much more stable than Unix? What is the
difference?
They had/have clustering software that was/is bulletproof. I don't
think
anyone in the Unix community has duplicated it to date. As for
differences,
google is your friend?
http://www3.sympatico.ca/n.rieck/docs/vms_vs_unix.html
And by "clustering" we're not talking about something like Sun Cluster
where it restarts an application after a node fails. It's more along
the lines of multiple machines acting as a single server (though each
runs its own copy of the OS--not a single image system):
http://en.wikipedia.org/wiki/OpenVMS#Clustering
http://en.wikipedia.org/wiki/VMScluster
It was originally released in VMS version 4 back in 1984.
VMS originally ran on VAX, was ported to DEC's Alpha (now dead), and
is now on Intel's Itanium (not that popular AFAIK).
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