58 Troubleshooting
NOTE: See "FDE considerations" (page 19).
Is a connected host port Host Link Status LED off?
Is a connected port Expansion Port Status LED off?
Yes, and the
Online/Activity
LED is off.
The disk drive is offline. A
predictive failure alert may have
been received for this device.
• Check the event log for specific information regarding the
fault.
• Isolate the fault.
• Contact an authorized service provider for assistance.
Yes, and the
Online/Activity
LED is blinking.
The disk drive is active, but a
predictive failure alert may have
been received for this device.
• Check the event log for specific information regarding the
fault.
• Isolate the fault.
• Contact an authorized service provider for assistance.
Answer Possible reasons Actions
Table 8 Diagnostics LED status: Front panel disks “Fault/UID” (continued)
Answer Possible reasons Actions
No System functioning properly. No action required.
(see Link LED note: page 85)
Yes The link is down. • Check cable connections and reseat if necessary.
• Inspect cables for damage. Replace cable if necessary.
• Swap cables to determine if fault is caused by a defective
cable. Replace cable if necessary.
• Verify that the switch, if any, is operating properly. If
possible, test with another port.
• Verify that the HBA is fully seated, and that the PCI slot is
powered on and operational.
• In the SMU, review event logs for indicators of a specific
fault in a host data path component. Follow any
Recommended Actions.
• Contact an authorized service provider for assistance.
• See "Isolating a host-side connection fault" (page 60).
Table 9 Diagnostics LED status: Rear panel “Host Link Status”
Answer Possible reasons Actions
No System functioning properly. No action required.
Yes The link is down. • Check cable connections and reseat if necessary.
• Inspect cable for damage. Replace cable if necessary.
• Swap cables to determine if fault is caused by a defective
cable. Replace cable if necessary.
• In the SMU, review event logs for indicators of a specific
fault in a host data path component. Follow any
Recommended Actions.
• Contact an authorized service provider for assistance.
• See "Isolating a controller module expansion port
connection fault" (page 62).
Table 10 Diagnostics LED status: Rear panel “Expansion Port Status”