Are they also running server 2012 r2?I have other H310's in other boxes that don;t do this.
Ran bpa and got 2 warnings. Resolved both of them. One was disable 8.3 file naming and the other was set srv.sys to start on demand, I did. Still no joy.Are they also running server 2012 r2?
If not my guess would be windows caching mechanisms. Try to run the bpa on the server and see if it finds something unusual.
Thanks. Source is the boot drive which is a DC 3500 480Gb. I'm copying the contents of the download folder as a test. I'll try a large file and report back.With 6500 objects might be fragmentation bogging down transfer speed due to I/O on the disks. See if you have too many shadow copies on the volume. If this is over network, qualify network using netio or iperf first to exclude cabling and switches. Then copy a large single file, like a ZIP with a bunch of 5 GB Windows 10 ISOs thrown into it. Should be at least 10x size of RAM. Check reallocated sectors and other SMART attributes on all disks to see if they are still healthy or one disk is dying.