I am running Hyper-V Server 2008 R2 (the free one) and my file server is a VM on it. The file server OS is Windows Server 2003 Ent R1. The VHD is on a RAID5 array with 4 SATA-II disks. 2 other VMs run on that array as well. The Hyper-V server uses 2 gigabit NICs that are teamed as one.
After doing some testing, I copied a 300 MB file to the file server and it's speed is around 70 MB a second. If I copy that same file to the Hyper-V host, then the copy speed is about 150 MB a second.
So basically my performance is cut in half when copying a file to a folder on a VM vs. the host file folder. I am copying the file to the same array so it is being copied to the same disks.
My question is, is this normal for the VM Lan speed to be only half the speed or is there a setting in Hyper-V that I can check to improve performance?