RE: Interesting Assertions on W2K Stability

[Chris Bipes <chris.bipes@xxxxxxxxxxxxxxx>]

Even on an AS400 if the primary partition fails, the system is down.  I do
use two cabinets with real time mirroring of the data.  We manually update
the applications one AS400/NT at a time with testing in-between.  I have
never had a hardware problem bring down any of our AS400s or NTs on mission
critical applications.  I have cheap PCs used for print serving and other
none critical applications die, but that generally meant moving the service
to another machine and re-directing the name to the new IP address.  No big
loss.

Christopher K. Bipes      mailto:ChrisB@Cross-Check.com
Operations & Network Mgr  mailto:Chris_Bipes@Yahoo.com
CrossCheck, Inc.                  http://www.cross-check.com
6119 State Farm Drive     Phone: 707 586-0551 x 1102
Rohnert Park CA  94928    Fax: 707 586-1884

-----Original Message-----
From: Buck Calabro [mailto:Buck.Calabro@commsoft.net]
Sent: Wednesday, October 03, 2001 3:05 PM
To: midrange-l@midrange.com
Subject: RE: Interesting Assertions on W2K Stability
To bring this back on topic for the 400, would an LPARd machine running V5R1
and V4R5 be able to avoid the single point of failure problem, or would you
really need two separate cabinets?  Take destruction of the machine room by
fire, flood or other catastrophe out of the equation for the purposes of
this discussion.

I believe that the number one cause of failure in modern computing systems
is not hardware (cheap or not) but software.  No, I cannot back this up with
published numbers, but I seem to recall far more fixpacks to repair a given
issue than I recall a hardware replacement.  The recent disk drive scare is
an exception to the norm.
  --buck