LaCie 5big network LED IndicatorsUser Manual page 56LED Indicators6.The LED indicators above the drive bays and the front LED indi-cate drive status and activity. This section describes the behaviorof the LED indicators.Front LED Color Rear LED Color 5big StateSolid blue Activity LED for working disk(s) Drive working (read/write)Blinking blue(0.8s, 0.8s)Activity LED for working disk(s)(until they are fully initialized)Occurs as the 5big is booting; will cease once the drives are fullyinitializedLong blue (2.5s),short pause (0.25s)Activity LED for working disk(s) RAID building; will cease once operation has concludedActivity LED for working disk(s)Long blue (2.5s), short red (0.25s) inrebuilding disksRAID rebuilding after new disk inserted; will cease once it has re-builtActivity LED for working disk(s) Backup/import operation in progress; will cease once operation hasconcludedLong blue (2.5s),short red (0.25s)Activity LED for working disk(s) onlySolid red for non-functional disksDamaged RAID; system working but non-functional disks need tobe replacedBlinking red(0.3s/0.3s)for 3 seconds totalActivity LED for working disk(s)During a backup operation, the external disk is full or not formattedDuring an import operation (triggered by pressing the front blue but-ton), the external disk is emptySolid redSolid blue in functional disksSolid red in non-functional disksDrive failure, RAID broken, data lostN/A System broken or not foundBlinking blue/red(0.3s, 0.3s) Activity LED for working disk(s) Temperature alert (first level)continued on the next page