We have mounted some NFS shares from an AIX server to two Windows 2008 servers via services for NFS. Both servers are similar in terms of OS, security updates and service packs, Network settings and hardware. However, one of the servers is copying data @20MB and the other one @5MB. Can someone suggest what can be done?

1. If you can interchange cables, then this may be the simplest test to prove the switch does not play the role. 2. "Similar" is a very vague term. I would start with comparison of firmware, drivers, hotfixes, servicepacks and settings first. 3. If 1 and 2 would not pinpoint the possible cause, the network monitor would give real data on protocols and latencies. 4. Performance tuning http://msdn.microsoft.com/en-us/windows/hardware/gg463392 Perf-tun-srv-R2.docx from MS download page http://technet.microsoft.com/en-us/library/cc753302(WS.10).aspx http://technet.microsoft.com/en-us/library/cc753302(WS.10).aspx Regards Milos

1. If you can interchange cables, then this may be the simplest test to prove the switch does not play the role. 2. "Similar" is a very vague term. I would start with comparison of firmware, drivers, hotfixes, servicepacks and settings first. 3. If 1 and 2 would not pinpoint the possible cause, the network monitor would give real data on protocols and latencies. 4. Performance tuning http://msdn.microsoft.com/en-us/windows/hardware/gg463392 Perf-tun-srv-R2.docx from MS download page http://technet.microsoft.com/en-us/library/cc753302(WS.10).aspx http://technet.microsoft.com/en-us/library/cc753302(WS.10).aspx Regards Milos