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Samsung aims new NAND Flash filesystem at Linux-based gadgets

Jun 22, 2004 — by LinuxDevices Staff — from the LinuxDevices Archive

Samsung is offering a new wear-leveling filesystem for NAND Flash storage devices that it claims offers better performance under Linux than existing alternatives. “Robust File System,” or RFS, targets mobile phones and other embedded devices running embedded Linux.

According to Samsung, RFS, which is available with the company's OneNAND Flash memory products, supports write speeds ten and four times faster, respectively, than JFFS2 and YAFFS, two older wear-leveling filesystems for Flash devices commonly used in embedded Linux systems.

Additional advantages claimed by Samsung include:

  • Greater data preservation capabilities in case of power disruption
  • Demand-paging under Linux, which Samsung says “allows the NAND Flash memory to store code as well as data.”
  • Support for Transactional FAT for external memory cards, to address data loss from corrupted file allocation tables (FATs).

Samsung says it has completed verification of RFS in a Linux kernel 2.4.20-based MontaVista Linux environment.

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