About drive monitoring 45
Figure 14: Disk drive LEDs
Each hard drive carrier has two LEDs that indicate the state of the physical disk. The green activity LED
(callout 1) flashes whenever the drive is accessed. The bicolor (green/amber) LED (callout 2) provides
drive status information as detailed below.
Table 7: Drive status LED
LED Pattern Drive Status Description
Flashes green two times per second Identifying the drive or preparing the
drive for removal.
Off Drive ready for removal, or all drives
are initializing. The drive status LED
remains off while the drives are
initializing after the system is turned on.
Do not remove a drive during this time.
Flashes green, amber, and off Predicted drive failure.
Flashes amber four times per second Drive failed.
Flashes green every 2 seconds Drive is rebuilding.
Steady green Drive is online.
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