W dniu 2010-09-07 21:36, Thompson, Steve pisze:
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On
Behalf Of Shmuel Metz (Seymour J.)
Sent: Monday, September 06, 2010 10:04 AM
To: IBM-MAIN@bama.ua.edu
Subject: Re: JES2 vs. JES3
In
<45d79eacefba9b428e3d400e924d36b903e59...@iwdubcormsg007.sci.local>,
on 09/05/2010
at 06:13 PM, "Thompson, Steve"<steve_thomp...@stercomm.com> said:
Why is JES2 better than JES3?
Why is an airplane better than a submarine? I'd like to know whether
you plan to travel under the ice or over it before answering the
question.
<SNIP>
Actually, I was planning on using a torpedo.
Well...
My goal is to meet business goals. I use mainframe, because:
a) my application is designed for mainframe
(loooong gap)
b) it is very good (maybe optimal) platform for that.
My business is not interested in (almost) any technical issues. I don't
ask them about torpedos, 24 vs 31 vs 64-bit addressing, JES2 vs JES3,
etc, etc.
IMHO both JESes are for the same thing: to run the applications,
especially batch jobs. The better is the cheaper - udoubtly JES2 -
UNLESS (!) there are other factors to analyze. Usually (vast majority!)
it is history: existing apps would need to be migrated, which could be
costly and cumbersome.
Theorethical case: If you start from scratch, then you should choose JES2.
--
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Lodz, Poland
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