Distributed File Systems
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Today's computer systems are highly dependent on distributed file systems. Although today's computer systems have storage capacity far greater than at any time in the past, and although that storage is less expensive than at any time previous, there is so much data to be stored, referenced and accessed that without distributed file systems, it would be nearly impossible for today's systems to be as widespread as they are. Distributed file systems offer greater flexibility to companies and organizations by making it possible for more employees to have access to more information than could possibly be stored locally. They offer greater security by making use of redundant disk arrays and geographically dispersed data. They are largely hardware independent, so that users can access data from an IBM computer, a Mac computer, or some other computer that meets the organization's budget requirements. Internet applications such as Napster make use of rudimentary distributed file systems that are not accessible to all users and which offer only limited access terms of the types of files that can be accessed; more complex distributed file systems contain metadata about the files themselves and information about the specific data stored on the system. This research offers an overview of distributed file systems, including security, weaknesses and typical applications for the use of distributed file systems.
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mia and government agencies as well as researchers at IBM who sought to provide their largest users with standards that would enable them to access data on distributed file systems. Because these systems were often proprietary, it is not surprising that few standards in terms of distributed operating systems or agents emerged. Today, MOSIX, Sprite, Mach and LSF are typical examples of systems that have been effectively implemented in a variety of application environments (Biggar, 2004a).
DESIGN
As mentioned above, distributed operating systems offer considerable flexibility and the best fit for distributed file system environments. MOSIX is a distributed operating system developed in Jerusalem in the early 1980s with regular releases occurring since that time. MOSIX is loosely based on Unix. This operating system performs load balancing automatically based on process migration, and offers transparency of data as well as decentralized control and dynamic configuration. One of the key goals of MOSIX is to provide each process with a uniform view of the system regardless of where the process is located. This "single system image" helps maintain data integrity and is critical to the reliability and flexibility of the system.
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Some common words found in the essay are:
REQUIREMENTS ANALYSIS, CONTROL Security, University Berkeley, INTRODUCTION Today's, IMPLEMENTATION Implementation, CONCLUSIONS Distributed, Internet Milojicic, Mach LSF, File Systems, distributed file, Key MOSIX, file systems, distributed file systems, file system, distributed file system, implementation plan, biggar 2004a, operating system, shared file, milojicic et al, operating systems, milojicic et, et al, et al 2000, shared file systems,
Approximate Word count = 3408
Approximate Pages = 14 (250 words per page)
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