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Jeff, it surely depends on the amount of data. In my special case I had to transfer about 2000 records per night to a SAP application interface. We used in the past different methods for data transfer (excepted OptiConnect) but we never measured transfer times, because there was never a time problem. I wonder if there are somewhere statistical informations on actual transfer times publicated. Regards, Werner Noll -----Ursprüngliche Nachricht----- Von: Jeff Bull [mailto:Jeff.Bull@xxxxxxxxxxxxxxx] Gesendet: Mittwoch, 11. Juni 2003 15:32 An: 'Midrange Systems Technical Discussion' Betreff: RE: SNA over TCP/IP 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. 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 tel. +44 [0] 149 454 9533 swb. +44 [0] 149 454 9400 mbl. +44 [0] 786 750 4961 fax. +44 [0] 149 454 9454 web. http://www.itm-group.co.uk ITM Group Ltd, Latimer Square, White Lion Road, Amersham, Buckinghamshire, HP7 9JQ, United Kingdom -----Original Message----- From: Colin Williams [mailto:colin.williams@xxxxxxxxxxxx] Sent: 11 June 2003 14:24 To: 'Midrange Systems Technical Discussion' Subject: RE: SNA over TCP/IP Bonnie, We use DDM a lot for updates/enquiries between machines (at same location), and don't have any performance issues (One of the machines runs our website). Cheers Colin.W -----Original Message----- From: Bonnie Williams [mailto:WilliamB@xxxxxxxxxxxxxxxx] Sent: 11 June 2003 13:17 To: midrange-l@xxxxxxxxxxxx Subject: RE: SNA over TCP/IP Speed is not an issue here as we do it overnight. (we are not a 24 hour shop) and the machines are physically located in the same building. I don't know if I would try it otherwise. But I didn't know his situation. >>> Jeff.Bull@xxxxxxxxxxxxxxx 06/11/03 07:38AM >>> In my experience DDM was quite slow at data transfer, though DDMF's in conjunction with CPYF and RPG - very flexible. 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 tel. +44 [0] 149 454 9533 swb. +44 [0] 149 454 9400 mbl. +44 [0] 786 750 4961 fax. +44 [0] 149 454 9454 web. http://www.itm-group.co.uk ITM Group Ltd, Latimer Square, White Lion Road, Amersham, Buckinghamshire, HP7 9JQ, United Kingdom -----Original Message----- From: Bonnie Williams [mailto:WilliamB@xxxxxxxxxxxxxxxx] Sent: 11 June 2003 13:29 To: midrange-l@xxxxxxxxxxxx Subject: Re: SNA over TCP/IP We have two machines here and have to copy some files from one to the other on a nightly basis. We have set up DDM files and it works like a champ. I don't know if your situation would allow use of DDM files, but it was very easy to set up and never gives us a problem. Bonnie >>> werner.noll@xxxxxxxxx 06/11/03 04:14AM >>> Hi All, I'll have a discussion with a customer about the best methods of data transfer between two iSeries systems. The systems are already connected by TCP/IP. The issue is to transfer periodically files from one system to the other. In the past we already used SNADS functions as well as FTP. I personally prefer SNADS, which would require the Anynet-Support. In previous postings I read something about a slow down when Anynet is used (in comparison with pure SNA or pure TCP/IP). Would this be remarkable? Does Anynet realy slow down also the interactive traffic on a TCP/IP line? Many thanks for any arguments pros and cons. 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