IRON File SystemsVijayan Prabhakaran, Lakshmi N. Bairavasundaram, Nitin Agrawal, Haryadi S. Gunawi, Andrea C. Arpaci-Dusseau, and Remzi H. Arpaci-DusseauComputer Sciences Department, University of Wisconsin, Madison{vijayan,laksh,nitina,haryadi,dusseau,remzi}@cs.wisc.eduABSTRACT Commodity file systems trust disks to either work or fail com- pletely, yet modern disks exhibit more complex failure modes. We suggest a newfail-partial failure modelfor disks, which incorpo- rates realistic localized f