NASA Scientific and Technical Aerospace Reports

20040121055 Singapore Univ., Singapore
An iSCSI Design and Implementation
Xiong, Hui; Kanagavelu, Renuga; Zhu, Yao-Long; Yong, Khai Leong; NASA/IEEE MSST 2004 Twelfth NASA Goddard
Conference on Mass Storage Systems and Technologies in cooperation with the Twenty-First IEEE Conference on Mass
Storage Systems and Technologies; April 2004, pp. 207-213; In English; See also 20040121020; No Copyright; Avail: CASI;
A02, Hardcopy
iSCSI is a network storage technology designed to provide an economical solution over a TCP/IP Network. This paper
presents a new iSCSI design with multiple TCP/IP connections. The prototype is developed and experiments are conducted
for performance evaluation on Gigabit Ethernet (GE). Test results show that the new iSCSI design improves performance
20%~60% compared with normal iSCSI architecture. Throughput can reach 107MB/s for big I/O and I/O rate can reach 15000
IOPS for small I/O.
Author
Computer Networks; Technology Utilization; Architecture (Computers); Data Transmission; Ethernet
20040121057 American Systems Corp., College Park, MD, USA
NARA’s Electronic Records Archive (ERA): The Electronic Records Challenge
Huber, Mark; Lake, Alla; Chadduck, Robert; NASA/IEEE MSST 2004 Twelfth NASA Goddard Conference on Mass Storage
Systems and Technologies in cooperation with the Twenty-First IEEE Conference on Mass Storage Systems and Technologies;
April 2004, pp. 69-78; In English; See also 20040121020; No Copyright; Avail: CASI; A02, Hardcopy
The National Archives and Records Administration (NARA) is the nation s recordkeeper. NARA is a public trust that
safeguards the records of the American people, ensuring the accountability and credibility of their national institutions, while
documenting their national experience. Today NARA holds an estimated 4 billion records nationwide. The Archives consists
of the permanently valuable records generated in all three branches of the Federal Government. These record collections span
this country s entire experience, across our history, the breadth of our nation, and our people. While paper documents presently
predominate, NARA holds enormous numbers of other media, such as reels of motion picture film, maps, charts, and
architectural drawings, sound and video recordings, aerial photographs, still pictures and posters, and computer data sets. It
is that last medium, the electronic records, that is the fastest growing record keeping medium in the USA and elsewhere in
the world. Since 1998, NARA has established key partnerships with Federal Agencies, state and local governments,
universities, other national archives, the scientific community, and private industry to perform research enabling better
understanding of the problems and the possibilities associated with the electronic records challenge. The challenge of
electronic records encompasses the proof and assurance of records authenticity and assurance of record persistence and ready
access to records over time.
Author
Documents; Collection; Data Bases; Computer Storage Devices
20040121061 Hitachi Ltd., Kokubunji, Japan
An On-Line Back-Up Function for a Clustered NAS System (X-NAS)
Yasuda, Yoshiko; Kawamoto, Shinichi; Ebata, Atsushi; Okitsu, Jun; Higuchi, Tatsuo; NASA/IEEE MSST 2004 Twelfth NASA
Goddard Conference on Mass Storage Systems and Technologies in cooperation with the Twenty-First IEEE Conference on
Mass Storage Systems and Technologies; April 2004, pp. 165-170; In English; See also 20040121020; No Copyright; Avail:
CASI; A02, Hardcopy
An on-line backup function for X-NAS, a clustered NAS system designed for entry-level NAS, has been developed. The
on-line backup function can replicate file objects on XNAS to a remote NAS in real-time. It makes use of the virtualized global
file system of X-NAS, and sends NFS write operations to both X-NAS and the remote backup NAS at the same time. The
performance of the on-line backup function was evaluated and the evaluation results show that the on-line backup function
of X-NAS improves the system reliability while maintaining 80% of the throughput of the X-NAS without this function.
Author
Real Time Operation; On-Line Systems; Backups
20040121074 NASA Langley Research Center, Hampton, VA, USA
A Dynamic Failure Model for Predicting the Impact that a Program Location has on the Program
Voas, Jeffrey; January 1991; 24 pp.; In English
Contract(s)/Grant(s): NAG1-824; NAG1-884; No Copyright; Avail: CASI; A03, Hardcopy
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