1. A method comprising: creating a first storage object, wherein creating the first storage object comprises a computer system creating a first storage object description, wherein the first storage object description comprises data that relates the first storage object to first underlying storage objects or to first physical memory regions; creating a second storage object as a virtual snapshot copy of the first storage object, wherein creating the second storage object comprises the computer system creating a second storage object description, wherein the second storage object description comprises data identifying the second storage object as a snapshot copy of the first storage object; adding to the first storage object description data identifying the second storage object as a snapshot copy of the first storage object; the computer system transmitting the first storage object description to a first computer system; and the computer system transmitting the second storage object description to a second computer system.