File Systems

FILES
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FILES

Files are an abstraction mechanism. They provide a way to store information on the disk and read it back later. This must be done in such a way as to shield the user from the details of how and where the information is stored, and how the disks really work.

Log-Structured File Systems
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Log-Structured File Systems

Changes in technology are putting pressure on current file systems. Particularly, CPUs keep getting faster, disks are becoming much bigger and cheaper (but not much faster), and memories are growing exponentially in size. The one parameter that is not improving by leaps and

Journaling File Systems
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Journaling File Systems

While log-structured file systems are an interesting idea, they are not extensively used, in part due to their being highly incompatible with existing file systems. However, one of the ideas inherent in them, robustness in the face of failure, can be easily applied to more conventional

Virtual File Systems
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Virtual File Systems

Several different file systems are in use - often on the same computer - even for the same operating system. A Windows system may have a main NTFS file system, but also a legacy FAT-32 or FAT-16 drive or partition that includes old, but still needed, data and occasionally a

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