Computer Science – Operating Systems
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufm.u22a0022a&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #U22A-0022
Computer Science
Operating Systems
9820 Techniques Applicable In Three Or More Fields
Scientific paper
Preservation, archive, and distribution of data products are essential requirements within the functions of the Planetary Data System (PDS) as well as any other data archive organization. Traditionally within the PDS, data products are and have primarily been distributed via physical portable media such as Compact Disc (CD) or Digital Versatile Disc (DVD). However, due to increasing data volumes, data products are also now housed on local hard drive disks or disk farms and distributed through on-line Internet services. Developing and future technologies will impact current and future requirements for data distribution. Although on-line data distribution services are expected to be the primary method for product distribution to the science community, interim and long-term hard-media archives will be desired for most if not all distributed datasets. In developing long-term hard-media archives for future Earth and Space Science missions, several issues must be addressed. Increased data returns result in very large datasets; for these data sets, current physical recording media are impractical, as storage requirements greatly exceed current recording capacities. Hardware, software, computer platform, media, and end-user considerations impact the design and format of data products intended for wide distribution; the technical and evolving nature of these and related factors require utilization of the latest and appropriate technologies in order to meet archive and distribution requirements in serving all data users. The ability to access data products across multiple computer platforms and varying operating systems is essential, true for both on-line and hard-media distribution. Issues remain for current and near-term datasets intended for hard media archive. Continued evaluation of factors such as industry and file system formats, media quality and longevity, recording hardware and software, and media storage requirements is essential. The PDS, in a collaborative effort with other government agencies and industry, has begun to research many of the evolving archive / distribution technologies and standards in an attempt to address many of the factors mentioned above and provide a viable solution to the development of a long-term hard-media archive for future Earth and Space Science missions.
Atkinson C. H.
Isbell C. E.
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