RE: NICs - bottleneck (was Re: Dropping the AS/400 as a Web serving platform)

I am just guessing here, but I believe that magic of "five nines" refers to

    UNPLANNED

downtime, not the scheduled, planned for, anticipated, regular downtime that
all shops perform.

Just a guess.

-----Original Message-----
From: midrange-l-admin@midrange.com
[mailto:midrange-l-admin@midrange.com]On Behalf Of Walden H. Leverich
Sent: Wednesday, October 03, 2001 14:17
To: 'midrange-l@midrange.com'
Subject: RE: NICs - bottleneck (was Re: Dropping the AS/400 as a Web
serving platform)


>you want the 99.9999 reliability?

Surely you jest. 99.9999% That's 31.5 SECONDS of downtime in a year. Given
that there isn't an AS/400 that you can shutdown and re-ipl within 31.5
seconds you're saying you haven't IPLed this year, at all, for anything
(release, PTF, crash?)

Maybe 99.999%, well that just over 5 minutes. I doubt you could bring a
machine down and back up in five minutes.

Maybe 99.99%, that would be almost an hour. That I'd buy. Of course I have
no problem getting that from a cluster of W2K machines either.

-Walden