Have you disabled smb1? -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Kurt Buff Sent: Friday, May 26, 2017 3:20 PM To: ntsysadm Subject: [NTSysADM] Very strange problem file server - read vs. write
All, I have a 2012R2 file server running as a VM on vSphere 6.0. Here's what I'm seeing: Copy large file (win7 ISO) from file server to workstation, I get roughly 12-13Mbytes/second, wired or wireless. Copy that file from workstation to server over a wireless connection, same speed - 12-13Mbytes/second Copy that file from workstation to server over wired connection, speed degrades to 1Mbyte/second or less Copy that file to another 2012R2 VM on the same host on the same SAN volume (our print server), and speeds are 12-13Mbytes/second for both wired and wireless. I've made sure that the following are disabled: RSS, atime, 8.3 filename generation, TCP Chimney. RAM and CPU utilization on this machine are well within limits. I'm thoroughly stumped. Anyone have pointers for me? I'm about to raise a case with MSFT. Kurt
