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Journaling vs. Transactional File Systems

As end-user expectations rise and embedded devices get more complex, reliable file management will become more of a commonplace requirement. The file systems available in most embedded operating systems were not specifically designed with the needs of the embedded marketplace in mind, but instead evolved out of solutions developed for desktop and server environments. These file systems have significant shortcomings in embedded devices as they were not designed for use in an environment where power loss may occur. This white paper looks at the limitations of file systems in embedded devices, and then reviews two different solutions -journaling and transactional file systems- and the key differences between them.

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