After expiration (i.e., either after two months without requesting an extension, or up to 6 months including the extension), we will shelve the virtual machine and its associated disk and, upon user request, retain the disk image for one year. Requests for further extensions (or new requests) need to be made by reapplying for access and—to allow other prospective users in the queue to receive an allocation—will be processed on a first come, first served basis.