NDLI: AFS and the Web:competitors or collaborators?

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AFS and the Web:competitors or collaborators?

Content Provider	ACM Digital Library
Author	Satyanarayanan, M. Spasojevic, Mirjana
Abstract	Over the last few years, the World-Wide Web [2] has risen to dominance as a mechanism for wide-area information access. Each day brings new reports of the growth of the Web, and this trend shows no signs of abating any time soon. To many people, the Web and the Internet are synonymous. Unfortunately, success has exposed many limitations of the Web such as its tendency to overload the network and servers, its limited ability to control access to sensitive data, its lack of mechanisms for data consistency, and its susceptibility to network and server failures. It is now widely recognized that these problems must be solved for the continued growth of the Web.With much less fanfare, another world-wide information system, AFS, has also been operational on the Internet. AFS was originally designed to support the file sharing needs of a campus-sized community of five to seven thousand workstations [11, 15]. In current parlance, AFS was conceived as an information sharing mechanism for the Intranet of an organization. Since then, AFS has been evolved to function effectively over the Internet [17, 21]. Many organizations have been part of a single distributed Unix file name space supported by AFS. As of 1994, this system spanned well over 100 organizations world-wide, with each organization typically containing many tens or hundreds of clients. Measurements reported in a recent paper [20] confirm that AFS does indeed function effectively at this scale.The goal of this paper is to critically compare these two mechanisms for world-wide information access. We begin by asking the following questions:• What are the relative strengths and weaknesses of the two mechanisms?• Which of these differences are superficial, and which are deep?• Why is the Web so much more visible and popular?In performing this comparison, it is important to keep in mind that the two mechanisms are not addressing precisely the same problem. While AFS has the relatively narrow and well-defined goal of provided distributed Unix file access, the goal of the Web is broader and less explicit. Further, AFS is now stable and mature while many aspects of the Web are still evolving. In spite of these caveats, we believe that a comparison of the two mechanisms will provide useful insights.Our comparison shows that the Web and AFS are not really competing technologies. Rather, they represent complementary technologies that may be used together for mutual advantage. We present real-life examples to confirm that this potential can indeed be realized in practice.
Starting Page	18
Ending Page	23
Page Count	6
File Format	PDF
ISSN	01635980
DOI	10.1145/254784.254788
Journal	ACM SIGOPS Operating Systems Review (OPSR)
Volume Number	31
Issue Number	1
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1975-04-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Information Systems

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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