See here for my list of publications and free software.
At HPL, I worked on FAB distributed disk array, Pangaea wide-area file system, and a bunch of random other things.
At UW, I built Porcupine, a high-capacity cluster-based mail server, with a particular focus on fault tolerance in unreliable environments. I also used to work on the legendary SPIN operating system. Achievements include a Digital UNIX and FreeBSD emulation services, a system call IDL compiler, the virtual memory system, (a part of) the file system, and a persistent storage system.