disadvantages of a linux cluster

Leif Nixon nixon at nsc.liu.se
Wed Nov 6 14:48:21 EST 2002


"Paul Redfern" <red at tc.cornell.edu> writes:

> The first four months (initial period of analysis) with Windows 2000
> Advanced Server, MIT reported 99.9986% uptime. Since then, the
> machine got hardened and reliability for it and our other clusters,
> has gotten better, not worse. We've been operating Windows 2000
> clusters since the server OS was first introduced. Typically outages
> are handled in less than ten minutes on one node with spare memory
> and hard drives. Outages don't affect the overall cluster; the
> scheduler works around it, and the cluster continues to run.

So a single node failure doesn't count against the uptime, is that
what you are saying? If that is the case, precisly what definition of
"uptime" are you using?

-- 
Leif Nixon                                    Systems expert
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National Supercomputer Centre           Linkoping University
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