keten van differentiërende schijven(A linked set of differencing drives, in which a differencing drive can have another differencing drive as a parent)
differentiërende virtuele harde schijf(" A virtual hard disk that stores the changes or "differences" to an associated parent virtual hard disk for the purpose of keeping the parent intact. The differencing disk is a separate .vhd file that is associated with the .vhd file of the parent disk. Changes continue to accumulate in the differencing disk until it is merged to the parent disk.")