In my spare time I work on a gamehosting project called 1stGame.nl. We run about 20 public gameservers for Counter-Strike and Counter-Strike Source.
All our databases ran on a old Dual Xeon 1.8Ghz server with 4 disks in a RAID-5 array. Yesterday one of these drives decided to die and take the system with it.
After a reboot, the system came back with missing data, a nightlong rebuild restored all of the data but the system is considered unstable now. All databases were moved to a newer Xeon 3.06Ghz system with 10K SCSI disks.