Conquest FS: "The Disk Is Dead"
andfarm writes "A few days ago, I sat in at a presentation of a what seems to be a new file system concept: Conquest. Apparently they've developed a FS that stores all the metadata and a lot of the small files in battery-backed RAM. (No, not flash-RAM. That'd be stupid.) According to benchmarks, it's almost as fast as ramfs. Impressive." The page linked above is actually more of a summary page - there's some good .ps research reports in there.
And when the battery goes dead, bye-bye data. Stuff like this scares me. I'm concerned enough about losing all my data on a current hard disk that can exist without power - if I had to keep my machine pumped full of electricity all the time, I'd be even more paranoid about losing stuff at random.
Great, until yoru battery back up dies and you lose your entire fs.