Startup time is very fast as operations to ‘check-disk’ are not necessary. A journal of operations is used to guarantee file system integrity, and provide power-failure safe write operations. The PJFS-178 Server can manage multiple storage devices, divided into separate volumes, each with their own client access permissions. The PJFS-178 Server provides partitioning support when used by clients running in different partitions. The PJFS-178 Server implements the file system, handles simultaneous API requests from clients, and manages all physical and virtual file storage devices. The PJFS-178 Client provides a POSIX-based API that can reside in one or more application partitions. This small footprint client-server implementation provides power-failure safe access to a variety of underlying storage devices. The PJFS-178 product is a high-assurance, reliable file system designed for DO-178B Level A certification that supports both file and directory services.
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