You can convert systems using auto-generated recommendations, or you can manually specify conversion parameters.

During the conversion process, physical disks are typically resized to conserve space on the datastore while providing room for growth on the resultant virtual disk.

The following formula is used to resize converted disks:

amount of space used on physical disk * 1.25 = resultant virtual disk size

Virtual disks are set to a size of 4GB or larger.