RE: SNA over TCP/IP

[Jeff Bull <Jeff.Bull@xxxxxxxxxxxxxxx>]

I inherited a network of AS/400s (at a previous place of employment) that
used DDMFs extensively, particularly in the overnight batch runs; if
anything gave me support headaches they did.  The "plan and test very
carefully" comment should be well heeded.  They are too easily abused.

Jeffrey E. Bull
OS400 Software Support Consultant

IBM Certified iSeries System Design Specialist
IBM Certifiied iSeries System Implementation Specialist
IBM Certified AS/400 System Administrator 

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ITM Group Ltd, Latimer Square, White Lion Road, Amersham, Buckinghamshire,
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-----Original Message-----
From: Pat Barber [mailto:mboceanside@xxxxxxxxxxxxxxxx]
Sent: 11 June 2003 15:16
To: Midrange Systems Technical Discussion
Subject: Re: SNA over TCP/IP


DDM is NOT designed to transfer large "blocks" of data. 

The original design point stated that it is best used to 
allow inquiry on a remote system and/or transfer smaller
files. 

There is no good way to determine where the 
"breaking point" really is with out a real live test.

You must plan and test very carefully to have a
good DDM install.


Jeff Bull wrote:
> 
> I guess all those of you using DDM to transfer data are not transferring
> large amounts of data, OR, I was just unlucky :-)  Matbe I should look at
it
> again.
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