1. A method for creating an image of a virtual machine, the method comprising: at a first virtual machine operating on a hardware resource of a hosting system that comprises a plurality of hardware resources, identifying a particular computer system operating as a second virtual machine with a particular configuration on the hardware resource; and capturing data representing the particular computer system at the first virtual machine, wherein capturing the data comprises: copying a particular section of the data; computing a checksum for the particular section of the data; and streaming the particular section along with the computed checksum from the first virtual machine to an image file in a storage, wherein the image file stores both the particular section and the checksum for the particular section.