Over the last couple of months I gathered the following tweaks for a better performance insight the virtual machine, besides disabling / uninstalling useless services and devices: Disable the pre-logon screensaver: Open Regedit HKEY_USERS\.DEFAULT\Control Panel\Desktop Change the value of “ScreenSaveActive” to 0. Disable updates of the last access time attribute for your NTFS filesystem, especially for i/o intensive vm’s this [...]

I’m not the only one who thinks that the Storage VMotion interface is a burden. A couple of scripting wizards started creating a decent interface for the Storage VMotion script, which definitely come in handy. Check them out: Dominic of VMProfessional created an additional perl script to make storage vmotion a bit easier. It works very simple just edit the [...]

When live migrating from ESX 3.0.2 to ESX 3.5 VMware gives an error:”Migration will cause the virtual machine’s configuration to be modified, to preserve the CPU feature requirements for its guest OS.” This error indicates that the .vmx file is about to be changed.

I was trying to convert the great Nostalgia Virtual Appliance to a VMware Workstation compatible format but just copying didn’t work. I did the following to get this thing running directly under VMware Workstation 6.02: I exported the Nostalgia VM from VirtualCenter 2.5 into an OVF format. Copied the OVF files to my PC(d:\ovftools). Downloaded the OVF Tool and unzipped [...]

When patching ESX Hosts with iSCSI attached SAN’s it’s possible you encounter the following event when starting a VM: “A general system error occured: The system returned an error. Communication with the virtual machine may have been interrupted.”

After a p2v there are several “ghosted devices” left in the VM. This could for instance cause a message about having already assigned the same ip-address to another nic when assigning .