User's Manual

Figure 2. Hard drive indicators
1. hard drive activity LED indicator
2. hard drive status LED indicator
3. hard drive
NOTE:
If the hard drive is in the Advanced Host Controller Interface (AHCI) mode, the status LED indicator does not
turn on.
NOTE: Drive status indicator behavior is managed by Storage Spaces Direct. Not all drive status indicators may be used.
Table 24. Hard drive indicator codes
Hard drive status indicator code Condition
Flashes green twice per second Identifying drive or preparing for removal.
Off Drive ready for removal.
NOTE: The drive status indicator remains off until all drives
are initialized after the system is turned on. Drives are not
ready for removal during this time.
Flashes green, amber, and then turns off Predicted drive failure.
Flashes amber four times per second Drive failed.
Flashes green slowly Drive rebuilding.
Solid green Drive online.
Flashes green for three seconds, amber for three seconds, and
then turns off after six seconds
Rebuild stopped.
PCIe slots
The PCIe slots on Precision 5820 have a different functionality depending on the processor installed. Core i7-78xx has a limit of 28 lanes.
This results in a reduced PCIe lane count to the slots 1 and 4 as shown in the following table:
• Slot 1 is closest to CPU/memory complex.
Table 25. PCIe slots
Core i9-79xx/Xeon Core i7-78xx
Slot 1 PCIe x850W Nonfunctional
Troubleshooting 113