The Linux kernel includes support for performing RAID-1 in software. RAID-1 maintains the same filesystem on two or more disks, so that you can lose all but the last disk and still retain all of your data. This seems wonderful until you consider that an error in RAM, a power supply failure, or another hardware component in the machine can still potentially corrupt your precious data. With Chiron FS you can maintain a RAID-1 on the disks of two machines over a network, so if one machine goes down, you'll still be able to access your filesystem.