We have a windows 2008 Server running on a ESXi 4.1 Host within Vcenter.
The windows guest does run exchange 2007 server and has 1 xVCPU and 8 GB ram.
For some reason copying a 1 GB file from one folder to another on the same disk takes 5-10 minutes???
Server even becomes slow , but I cannot see any hit on CPU or Memory.
Copying the file off to another server on the network only takes a few seconds!!