The Network RamDisk consists of a client issuing byte/block read and write requests and remote server processes satisfying these requests. Fully operational prototypes of the proposed system have been built, with clients on Linux 2.0.33 and the Digital Unix 4.0 Operating Systems, and servers running on Digital Unix 4.0 and Solaris 2.5 operating systems. The reliability schemes mentioned previously, were fully implemented, tested and measured on the Linux NRD client.