MECH 2301 Lecture Notes - Lecture 37: System Administrator
22 May 2018
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MECH 2301 Lecture 37 Notes
Introduction
File systems, volumes, disks, partitions, and storage pools
• Consistent with other file directory systems
• There are also extensions that make it possible to store a mixture of data, audio, and
images on the same disk.
• The UDF system includes support for both High Definition and Blu-Ray DVD formats.
• Even a medium-sized computer system may store thousands or even millions of files.
• To locate and use files effectively there must be some organization that makes sense to
the users of the system
• As well as to the people responsible for administering the system
• For a desktop system, the files may all be stored on a single disk drive.
• On a larger system, files may be stored on a number of different disks, either locally or
on a network. Some disks may be fixed, others removable.
• Some may be set up as RAID drives
• So how is the operating system to handle all of this effectively?
• From the perspective of the user, the goal is simplicity and convenience
• For the system, the goal is efficiency.
• The system administrator looks for manageability.
• Although operating systems manage the massive amounts of data in modern systems
differently, most attempt to provide a structure that can divide the files
• Both logically and physically, into reasonable groupings those attempt to meet the goals
of the different parties.
• Even the definition of a file system is somewhat arbitrary.
• Think of all the different ways that you could use to organize and store all of your
college research papers in file boxes.
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