The National Space Science Data Center (NSSDC) has been investigating the use of optical disk technology in order to accommodate the growing need for an inexpensive, convenient method of receiving, storing, retrieving and disseminating data. The main focus to date has been on Write Once Read Many technology employing a 12" drive, with a data storage capacity of 1 Gigabyte per optical disk. A pilot project developed under a research contract with the University of Texas at Dallas provided the integration of an Optimem 1000 with a PDP 11 host computer. The NSSDC has developed a software and hardware system for integrating 12" optical disk drives with VAX VMS/Files-11 so that the optical drive appears as if it is a native DEC peripheral. The NSSDC is running performance tests on the drives. The NSSDC is submitting a mass buy of optical drive systems that interface with VAX/VMS to be distributed to scientific installations around the country. This will facilitate the exchange of data between scientific investigators and the NSSDC in the near future, by providing a temporary standard for VAX and MicroVAX science users. The long-term needs of the NSSDC are similar to that of potential optical disk users who will be exchanging or distributing optical disk platters. These needs are for standards at all levels, including interchangeability of blank media and different optical drives and interchangeability of media written on different host systems. At present, the only standard in WORM technology is the size of the footprint of the drive.