I'm on the phone with MSFT now. I'll update y'all once I know more.
Kurt On Fri, May 26, 2017 at 3:54 PM, Michael B. Smith <mich...@smithcons.com> wrote: > Time for netmon/wireshark. > > -----Original Message----- > From: listsad...@lists.myitforum.com [mailto:listsad...@lists.myitforum.com] > On Behalf Of Kurt Buff > Sent: Friday, May 26, 2017 6:09 PM > To: ntsysadm > Subject: Re: [NTSysADM] Very strange problem file server - read vs. write > > Multiple workstations. I've migrated the file server to different hosts (5 in > the cluster), and it doesn't seem to make a difference. > > Kurt > > On Fri, May 26, 2017 at 2:17 PM, elsalvoz <elsal...@gmail.com> wrote: >> One, multiple or all workstations? How about server on different host >> or physicals? >> >> Cesar A. >> >> On May 26, 2017 2:10 PM, "Michael B. Smith" <mich...@smithcons.com> wrote: >>> >>> Without a trace I can't be sure. But it seems likely. >>> >>> Have you also verified that the link is negotiating to the highest >>> speed available and that it is error free? >>> >>> -----Original Message----- >>> From: listsad...@lists.myitforum.com >>> [mailto:listsad...@lists.myitforum.com] On Behalf Of Kurt Buff >>> Sent: Friday, May 26, 2017 4:04 PM >>> To: ntsysadm >>> Subject: Re: [NTSysADM] Very strange problem file server - read vs. >>> write >>> >>> No, we have not. It's required for some older machines. >>> >>> FWIW, the client's I'm testing with are Win10 1607. >>> >>> I presume that your implication is that turning it off would speed >>> things up? >>> >>> Kurt >>> >>> On Fri, May 26, 2017 at 12:33 PM, Michael B. Smith >>> <mich...@smithcons.com> >>> wrote: >>> > Have you disabled smb1? >>> > >>> > -----Original Message----- >>> > From: listsad...@lists.myitforum.com >>> > [mailto:listsad...@lists.myitforum.com] 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 >>> > >>> > >>> >>> >> > >
