Bob,

I think what it means is that you will only "suffer" .3 seconds of application 
outage in a year.  Of course that means you have a fully redundant SYSPLEX set 
up with duplicated everything such that when you do have to bring down a CEC, 
the application workload is pushed to a different node and keeps running.  

Rex

-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of Bob 
Bridges
Sent: Tuesday, May 23, 2023 4:14 PM
To: [email protected]
Subject: [EXTERNAL] 8 9s, really?

I'm just getting around to reading the article someone cited here:

  
https://urldefense.com/v3/__https://www.linkedin.com/pulse/results-mainframe-application-modernization-migration-ross-mauri/__;!!KjMRP1Ixj6eLE0Fj!vRWugZ9PZChjYOSRHES5hJagG3oL3-Aj5C29vq6Z4IH31v7-TLc3h60QpKT33OATN9JvjoIKMLQgPjtpjd4O2yQ$
 

I heard that "8 9s" claim go by before, but I didn't pay much attention.  But 
in the article it says that equates to 0.3 sec of downtime per year, and I 
pause.

Does "down time" not include IPL, then?  When you IPL, doesn't that count as 
"down"?  Because if it doesn't, I don't see what use that measure is.  Or does 
no one IPL any more?

---
Bob Bridges, [email protected], cell 336 382-7313

/* Even the most marginal NBA player is an absurdly better athlete than an 
ordinary person.  When basketball people say that Grant Long can't shoot, can't 
pass, can't dribble, what they mean is:  He can shoot, pass and dribble better 
than you, better than anybody you know, better than all but a few hundred 
people in the world.  -from _Why the NBA Isn't As Offensive As You Think_ by 
Dave Barry */

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