<p>Yaffs provides bad block handling and ECC algorithms to handle deficiencies in NAND flash.</p>

<p>It is a log-structured file system which makes it very robust to corruptions caused by power failures.</p>

<p>We spend about 60% of development time on testing Yaffs, and our test harness is available for download so you can check the testing and perform some yourself.</p>

<p>We've performed hundreds of thousands of tests to make sure that Yaffs is as safe as we can make it, even in the even of a power failure during a firmware update.</p>

<p>You can find full details of the Yaffs testing regime in our paper <a href="http://www.yaffs.net/documents/yaffs-robustness-and-testing">http://www.yaffs.net/documents/yaffs-robustness-and-testing</a>&nbsp; including all the details on the power-fail stress tests, the Yaffs Direct API tests for commercial RTOSs, Linux testing, and fuzz testing where we deliberately corrupt Yaffs file systems to check that Yaffs can still mount.</p>
