Troubleshooting
96-30065-001 Rev. A0
DataDirect Networks EF4024 FC RAID System Setup Guide | 40
7.
Swap the SFP with the known good one.
Is the host link status/link activity LED on?
❖
Yes – You have isolated the fault to the SFP. Replace the SFP.
❖
No – Proceed to the next step
8.
Re-insert the original SFP and swap the cable with a known good one.
Is the host link status/link activity LED on?
❖
Yes – You have isolated the fault to the cable. Replace the cable.
❖
No – Proceed to the next step
9.
Verify that the switch, if any, is operating properly. If possible, test with another port.
10.
Verify that the HBA is fully seated, and that the PCI slot is powered on and operational.
11.
Replace the HBA with a known good HBA, or move the host side cable and SFP to a
known good HBA.
Is the host link status/link activity LED on?
❖
Yes – You have isolated the fault to the HBA. Replace the HBA.
❖
No – It is likely that the controller module needs to be replaced.
12.
Move the cable and SFP back to its original port.
Is the host link status/link activity LED on?
❖
No – The controller module port has failed. Replace the controller module.
❖
Yes – Monitor the connection for a period of time. It may be an intermittent
problem, which can occur with damaged SFPs, cables, and HBAs.
5.6
Isolating a Controller Module Expansion Port
Connection Fault
During normal operation, when a controller module’s expansion port is connected to a drive
enclosure, the expansion port status LED is green. If the connected port’s expansion port
LED is off, the link is down. Use the following procedure to isolate the fault.
This procedure requires scheduled downtime.
NOTE :
Do not perform more than one step at a time. Changing more than one
variable at a time can complicate the troubleshooting process.
1.
Halt all I/O to the storage system (see Section
5.3
).
2.
Check the host activity LED.
If there is activity, halt all applications that access the storage system.
