I can't change the slot for the nic, because all for nics are onboard. I changed to another nic and swapped the cat7 cables between the server and a second server. I won't change settings, because everything runs fine and the doc from intel says something about tuning. I got already 94MB/s across two switches and two buildings.
Now i tried the latest beta (dss6.0up03_beta.oe_i.tar.gz). The beta complains about the storage are in 32bit-format with selected 64bit mode. So i deleted the storage and created a new one. Then i tested nfs again and it runs fine. I booted back into the old system (DSS 5.0.DB49000000.3278) from the buyed usb stick. Now it runs fine.
I'm absoluty sure, yesterday i have selected 64bit SMP while booting, saved this on the console with selecting 64bit SMP for booting and rebooted after that. I looked onto the memory settings and there stand something with 32GB RAM and a memory use above 4GB. This confirmed me being in 64bit mode How can i check wheter the system runs in 32bit or 64bit mode?
Rsync runs since 15min stable with no errors. I think the error was using 32bit mode on an 8 Core System with 32GB RAM.
Yes after you supplied the hw specs I was going to recommend using the 64bit option - you can verify the settings from the console Tool CTRL + ALT + T then select boot options then System Architecture.