I have a weird behavior on some of my VMs:
Host OS Windows Server 2012 with Hyper-V
Guest OS both 2008R2 and 2012
Storage Equallogic SAN, iSCSI
Gigabit ethernet
The host is connected to a 1 GB Volume where the VHD of the VM are stored
If I copy a large file (say a template .VHDX) from the HD of the host, via network, to the drive (a. VHDXfile ) of the guest, transfer speeds are acceptable (start well over 300 MB/s then stabilizes to 80 MB/s), and compatible with the virtual gigabit network card on the VM
If I copy the same file on the VM (a simple ctrl-c ctrl-v on the same disk, but the same results happen copying from one drive (VHD) to another) the copy speed crawl to a 17 MB/s average and it's generally unstable.
I've seen many posts about the opposite behavior, slow network speeds and fast internal copy speeds and I can say that I have VMQ disabled on both my host and guest machines.
What could be the cause of this issue?
Thanks in advance for any help that you may give.