vmware workstation 12
Host: Windows Server 2012
I created a new VM from an existing physical machine. This went smoothly (except for fixing the mbr).
The disk I/O performance turned out to be very poor when the VM's disk was stored locally to the host.
I have a number of disk drives and I tried moving it to other drives to ensure it was not a problem with one drive.
The I/O performance was roughly 1.0 MBps.
I moved the VM disk into a network share (hosted on a NAS).
Still running the actual VM on the windows box, not the NAS, just the disk is now located on the NAS.
I mapped the share in windows.
Opened the VM in Workstation.
I/O performance improved to 30-40 MBps without any tweaking.
I am at a loss as to why this is.
I have VMware fusion on a MAC and it is blazing fast when using the VMs.
Something is weird about VMware and local disk access on this machine.
Any pointers I could try would be helpful.
Maybe VMware does not like the host os. Or the host OS is not providing vmware with sufficient priority or access to the disk in a certain way.
