Yaffs Tuning
This document describes the parameters which can be modified by the developer in the different phases of applying, debugging, and routine use of Yaffs.
Simple to integrate
Yaffs Direct Interface is simple to integrate in a system – only a few interface functions are required. Yaffs also includes a POSIX interface. It has been used with Android, VXWorks, Windows, Linux, bare metal, and more; on ARM (32 & 64), x86 (32 & 64), Atmel, and more.
Highly configurable - matches your Flash memory
Yaffs is highly configurable, making it possible to work with various Flash geometries, Error Correction and caching options according to your needs.
Memory efficiency
Yaffs has a smaller memory footprint than most other log-structured Flash file systems.
Predictable and performance oriented
Yaffs has highly optimised and predictable garbage collection strategies. These give it high performance and make it very deterministic when compared with similar file systems.
A file system designed for Flash memory...
Yaffs is designed to ensure data safety, whilst offering the advantages of NAND Flash. It works with SLC and MLC NAND Flash and also with NOR Flash. See the document Considerations in Using a Flash File System for a discussion of the importance of reliability.
Cross-platform and portable...
Yaffs is OS- and CPU- and Endian-independent. It's been designed to be easy to port, and has been ported repeatedly by many users.
High and low level interfaces...
Yaffs has high and low level interfaces, for Posix compliance and more direct use, making it easy to integrate with Linux and other RTOSs.
YAFFS Robustness and Testing
This document describes some of the important design criteria and design features used to achieve a robust design suitable for modern embedded systems which need to store critical data. The test methodologies are also described.
Data is safe with Yaffs...
Yaffs is designed for data safety and rigorously tested to ensure it does the best possible to keep users' data safe. It's been crash-tested it hundreds of thousands of times ...