i just had a hard drive failure on a server with a raid mirror. thankfully, nothing has been lost. am rebuilding the raid with a new drive shortly. (a web interface for managing this process would be nice).
however, it seems that the hard drive was down the last two weeks. it would be nice to have a daemon that monitors the health of the system and then kicks off an email with a daily status report. it should allow you to enter an offsite email address for reporting, multiple email addresses would be better yet.