Have you tried MODE S (streaming) and TYPE E? Joe
On Thu, Mar 28, 2024 at 7:31 AM Jousma, David < [email protected]> wrote: > All, > > Grasping at straws here, IBM support center is baffled too. > > To clone z/OS maintenance to various disconnected sysplex’s I do a DFDSS > dump, and FTP it everywhere it needs to be. Its roughly a 50Gb file > transfer. There is some environmental issue causing slow file transfers to > some systems (40mb’s a sec) and fast file transfers (150Mb/sec) to other > systems on the same CEC. With IBM support help, we’ve narrowed down the > problem to the specification of MODE B and EBCDIC on the transfer since it > is a DSS dump. Remove those, and the transfer is fast on the slow > systems, and still fast on the fast systems. Obviously that isn’t a > solution though. > > So, we are a GDPS shop. The oddity is that all the “fast” transfers are > to the K systems(control systems), and all the “slow” transfers are to the > traditional application systems. TEST, DEV, PROD makes no difference, nor > does LPAR busy or not busy. > > It seems there is something configured differently on the “slow” systems > that is affecting mode b, ebcdic file transfers, but for the life of me, I > cannot put my finger on what, nor can the support center, except that the > issue is at the remote end, in that the OS cannot offload the data fast > enough, so TCPIP/FTP is slowing the transfer pace. > > A virtual adult beverage of choice to the one that can point in a > direction to look…. > > > Dave Jousma > Vice President | Director, Technology Engineering > > > > > > This e-mail transmission contains information that is confidential and may > be privileged. It is intended only for the addressee(s) named above. If > you receive this e-mail in error, please do not read, copy or disseminate > it in any manner. If you are not the intended recipient, any disclosure, > copying, distribution or use of the contents of this information is > prohibited. Please reply to the message immediately by informing the sender > that the message was misdirected. After replying, please erase it from your > computer system. Your assistance in correcting this error is appreciated. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
