We have a lot of disk drives, mostly running in RAID1 pairs. They all run SMART self-diagnostic utilities, but it's hard to use these as a snapshot to detect problems; more telling is a steady trend. So this page shows the result of a historical record of the raw_error_rate statistic for all the main disk drives in LabROSA.
(The image is updated by the check_drives cron job running under my UID on pink).