The Customer Experience Improvement Program (CEIP) helps VMware understand what products and versions have been installed in a datacenter. This information is collected to assist and streamline problem determination and resolution.

Whether this information gets sent to VMware is a customer choice (on-premise) with CEIP opt-in and opt-out, or as part of their Terms of Service. VMware collects the product name, version, and transport to assist in problem resolution. No other partner-specific information is collected.

VMware asks that vendors add these lines to the VDDK configuration file for identification. Legal characters: 26 letters, digits, underscore (_), minus (-), period (.), and space. Double quotes are needed if settings contain spaces. Optional DatabaseDir stores phone home data in a separate folder.

vixDiskLib.phoneHome.ProductName = vendorName or ApplicationName
vixDiskLib.phoneHome.ProductVersion = versionNumber
vixDiskLib.phoneHome.DatabaseDir = folderName

Using the vSphere Client, customers can join or leave CEIP by clicking Menu > Administration > Customer Experience Improvement Program. When customers leave the CEIP, they deactivate phone-home for all products, including VDDK.