RE: Laymans explaination for single level store?

[CWilt@xxxxxxxxxxxx]

Paul,

Nice explanation.

If you don't mind, I'm going to add that to my list of layman's quotes.

Charles Wilt
iSeries Systems Administrator / Developer
Mitsubishi Electric Automotive America
ph: 513-573-4343
fax: 513-398-1121
 

> -----Original Message-----
> From: PaulMmn [mailto:PaulMmn@xxxxxxxxxxxxx]
> Sent: Tuesday, November 30, 2004 12:06 AM
> To: midrange-l@xxxxxxxxxxxx
> Subject: RE: Laymans explaination for single level store?
> 
> 
> If I may--
> 
> Imagine if you will an uber-computer that consists of an infinite 
> number of bytes of real (RAM) memory.  This computer has no disk 
> memory.
> 
> Storing anything in this computer consists of writing to a fragment 
> of the bytes in this immense memory space.  It doesn't matter if the 
> thing being stored is a program, a data area, a database file, or any 
> other object.
> 
> You write an object to a block of memory.  A program is executed 
> directly from the memory it occupies; there is no need to move it 
> anywhere.  A file is accessed by observing the data as it resides in 
> its normal resting space.
> 
> An object is moved from library to library by removing an entry from 
> a list and writing it to another.  No movement of the object is 
> required.
> 
> This is the S/38 / AS/400 / iSeries / i5 computer system.  As far as 
> OS/400 is concerned, it HAS that infinite memory space in which to 
> play.  The fact that there's a memory to disk mapping system and a 
> sophisticated swapping algorithm to make it work in the real world is 
> merely a 'temporary' inconvenience.
> 
> --Paul E Musselman
> PaulMmn@xxxxxxxxxxxxxxxxxxxx
> 
> 
> ps--  I've always liked this system--   When the hardware has 
> outlived its usefulness, you 'merely' jack up the operating system, 
> slide out the old hardware, slide in the new hardware, let down the 
> OS, and it's off and running with new and improved technology.  No 
> changes to the objects in the memory space required!  [If you don't 
> count the CISC to RISC conversion process, that is!]
> --
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