This option creates a copy of a virtual disk or raw disk you specify.

-i --clonevirtualdisk srcfile -d --diskformat [zeroedthick|thin|eagerzeroedthick|rdm:device|rdmp:device|2gbsparse]

You can use the -d|--diskformat suboption to specify the disk format for the copy you create. A non-root user is not allowed to clone a virtual disk or an RDM.