The 3ware RAID controller supports SMART Monitoring, whereby the individual drives automatically monitor certain parametric information such as error rates and retry counts. By monitoring this data, SMART may be able to predict a drive failure before it happens, allowing you to schedule service of the unit before it becomes degraded. The SMART status of each drive attached to the 3ware RAID controller is monitored daily. If a failure of any drive is determined to be likely, you are notified by this message.
If the drive is part of a redundant unit, then you can 'Remove' the drive with 3DM2 to degrade the unit. Replace the drive and start a rebuild. For information on rebuilds, see
Rebuilding Units.