Are you experiencing poor performance? Does your virtual machine feels sluggish.
Try this: (especially if virtual drives are located on external USB drives)
Disable Superfetch and Remote Differential Compression.
Superfetch can be disabled by;
Going to start > right clicking Computer > Click Manage > Choose Services and Applications > Services
Find "Superfetch" in the list, and right click > Properties > Change "Startup Type" to "Disabled"
Then Hit "Stop" then "Apply"
Remote Differential Compression can be disabled by:
Going to Start: Control Panel > All Control Panel Items > Programs and Features > "Turn Windows Features on or Off"
Uncheck Remote Differential Compression and Click OK.
Restart the computer after these changes.
When I made this change I noticed an immediate boost in performance.
I was so excited I took the next step and added a second virtual hard drive on a second physical drive and moved my swap file for Windows Server to the new location.
Drive configuration: (ThinkPad w700 with two 7200RPM internal drives)
Internal Drive 1: Windows 7 Host
USB Drive: VMWare Primary partition running Windows Server 2008 R2 and SharePoint 2010
Internal Drive 2: Second VMWare drive for Windows Server R2 Swap file.
Superfetch fix is courtesy of Stev