dection 5Storage Devices.docx

A file system is a means for organizing and storing

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A file system is a means for organizing and storing data and information on a storage device. The file system and the operating system work together to ensure data availability, integrity, and accessibility. The following table gives a description for the four main components of a file system: Component Description Partition A partition is a logical division of a storage device associated with a hard disk drive. Multiple partitions can be assigned to a single device in which case a drive letter is assigned to represent each partition. Multiple letters do not always mean that there are multiple devices, just multiple partitions. Some reasons why you may consider partitioning your hard drive are: Assigning the boot system to a different partition than application and data files can help many computers run more smoothly and minimize damage in a system crash. It is sometimes necessary or useful for the swap file to be stored on its own partition. Some operating systems can't run on a large partition. Creating a separate partition for your operating system can help it run properly. Assigning log files to be stored on distinct partitions can help minimize the effects of a system crash due to excessively large log files. Distinct operating systems can be assigned to run on assigned partitions to allow a dual boot system setup. Unallocated space is space on a partition that has not been assigned to a volume. You cannot store or read data in unallocated space. Volume A volume is a single accessible storage area within a file system. A volume can encompass a single partition or span across multiple partitions depending on how it is configured and what operating system you are using. Volumes are identified by drive letters. Directory A directory (also called a folder ) is a container in a volume that holds files or other directories. It is used to logically sort and organize data to keep related files grouped together. Most operating systems use a hierarchal filing structure. File A file is a one-dimensional stream of bits treated as a logical unit. They are the most basic component that a file system uses to organize raw bits of data on the storage device itself. The file name is made up of the directory path plus the file name. An extension can also be added to the filename to identify the file type and the program used to create, view, and modify the file. Formatting is the process of preparing a partition to use a specific file system. Be aware of the following facts regarding formatting: When you format a disk, you identify the file system type and identify the cluster size used to store data. Reformatting removes the existing file system and replaces it with the new file system type. Reformatting a drive deletes all existing data.
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