Chapter 9. Maintaining Units140 3ware Serial ATA RAID Controller User GuideEnclosure LED Status IndicatorsIf you use an enclosure that has an integrated AMCC/3ware CCU (chassiscontrol unit), the LEDs on your enclosure also provide some statusinformation. The chassis should come with a cable which attaches to the I 2Cport on the controller.Unit StatusesThe following is a list of unit statuses you may see in 3DM:• OK. The unit is optimal and is functioning normally.• Rebuilding. The unit is in the process of writing data to a newly addeddisk in a redundant unit, in order to restore the unit to an optimal state.Note: The following table is an example only. Check with your chassisdocumentation for more details. Not all features may be supported or implementedin the same way.Table 11: Meaning of LED Colors and BehaviorColor Drive StatusSolid green OKBlinking green IdentifyThis occurs when you have used the Identify command in 3DMto locate a particular drive or unit. (See “Locating a Drive byBlinking Its LED” on page 166.)Black No driveSolid Amber Hot spareBlinking amber RebuildingThe drive in this slot is part of a RAID unit that is currentlyrebuilding. You can continue to use the unit. For moreinformation, see “Rebuilding Units” on page 155.Solid red Drive faultThis drive has failed. You should replace it and rebuild the unit.Blinking red Predicted drive fault3ware software predicts that this drive will fail soon. You maywant to replace it.
