Dave Kopischke wrote:
Because I want to know if it worked or not. As you imply, it will be next
to impossible to get an objective answer, but SIAC is a high visibility
company and process within the industry. They won't fail without someone
knowing it.
when we were doing ha/cmp ... we talked quite a bit to SIAC, which was using a
number of tandem computers at the time ... misc posts mentioning ha/cmp
http://www.garlic.com/~lynn/subtopic.html#hacmp
in that period, i had been asked to write part of the corporate continuous
availability
strategy document (based on ha/cmp work we were doing in geographic survivability) ...
however both Rochester and POK non-concurred with what I had written ... and it got pulled
(at the time, they didn't have any offerings that could meet the criteria); we
had coined the terms disaster survivability (as an alternative to
disaster/recover) and geographic survivability ... misc. posts on geographic
operation and continuous availability
http://www.garlic.com/~lynn/subtopic.html#availability
later we also talked to one of the big financial transaction operations running
IMS hot-standby in a geographic separated operation ... they attributed their
100 percent availability over a period of several years to 1) IMS hot-standby
and 2) automated operator (i.e. people make mistakes)
for a little drift ... my wife had been con'ed into serving a stint in POK in charge of loosely-coupled architecture where she originated "peer-coupled shared data" architecture
http://www.garlic.com/~lynn/subtopic.html#shareddata
except for IMS hot-standby, the architecture saw very little uptake until
sysplex (one of the reasons she didn't stay in that position for very long).
for small amount of other IMS topic drift ... in this old email
http://www.garlic.com/~lynn/2007.html#email801016
in this post
http://www.garlic.com/~lynn/2007.html#1 "The Elements of Programming Style"
for other topic drift, collection of email discussing ha/cmp scale-up
http://www.garlic.com/~lynn/lhwemail.html#medusa
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