RE: Scalability

midrange-l-request@xxxxxxxxxxxx wrote:

>   6. Scalability (Muralidhar Narayana)
>
>Can some one compare scalability between iSeries and S/390?
>I believe iSeries is more scalable than any platform available. 

"Scalability" needs to be pinned down a little more. And even "iSeries" and 
"s/390" aren't quite clear enough.

Example... When IBM came out with the System/38, it was defined as "System/38 
consists of a machine and three major IBM licensed programs: Control Program 
Facility (CPF), RPG III, and Interactive Data Base Utilities (IDU)." This is 
from IBM System/38 Technical Developments, topic "Introduction to IBM System/38 
architecture".

In the case of "iSeries", I'm not absolutely clear that OS/400 is part of the 
definition though I wouldn't think of it any other way.

Beyond basic platform definition, scalability needs to take into account the 
system administration and management tools. For example, although it might be 
technically possible on a single iSeries to have two or three thousand 
interactive jobs running along with a few hundred batch subsystems with who 
knows how many jobs running concurrently, I'm not aware of OS/400 tools that 
allow decent administration of those jobs. Certainly few of us would appreciate 
scrolling through WRKACTJOB at that level regardless of whether it works or not.

So, what kind of scalability are we interested in?

Tom Liotta

-- 
Tom Liotta
The PowerTech Group, Inc.
19426 68th Avenue South
Kent, WA 98032
Phone  253-872-7788 x313
Fax    253-872-7904
http://www.powertech.com


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