RaidEye is a tool for monitoring Mac OS X software RAID volumes status. RaidEye is able to detect if a RAID volume has damaged or missing members, and can alert the user with a repeating sound and sending an email with a detailed report of RAID status.
"Auto start monitor" is an option to start the RAID monitor when RaidEye is launched.
RaidEye can also rebuild damaged mirrored RAID sets. The best way to try RaidEye is to create a small raid with 2 or more USB pens or ipods, and to create/destroy/rebuild software RAID sets. Use Disk Utility to create RAID sets the first time. Please note: use this tool at you own risk.
RaidEye is a Universal Cocoa-Applescript frontend for the command line tool "diskutil". RaidEye is freeware and opensource.