As I mentioned, a standard binary transfer runs all day to all lpars at 
140Mb/sec.   It seems that only DSS dump files with MODE B, and EBCDIC 
specified slows them down.

I have reached out to our network/firewall teams to see if there some sort of 
data inspection going on.

Dave Jousma
Vice President | Director, Technology Engineering





From: IBM Mainframe Discussion List <[email protected]> on behalf of 
Styles, Andy (CIO GS&S - Core Infrastructure & IT Operations ) 
<[email protected]>
Date: Thursday, March 28, 2024 at 9:54 AM
To: [email protected] <[email protected]>
Subject: Re: Slow FTP's
Classification: Public Do you have access to any other kind of transfer 
mechanism, and if so, does it happen with that too? (thinking Connect: Direct 
for example). Is the target device of the transfer the same on fast vs slow? 
Andy Styles z/Series


Classification: Public



Do you have access to any other kind of transfer mechanism, and if so, does it 
happen with that too? (thinking Connect:Direct for example).

Is the target device of the transfer the same on fast vs slow?



Andy Styles

z/Series Systems Programmer



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