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If it is clear that a particular component system is at fault in a problem situation, go directly to that
component. If it is not clear, the best approach is to troubleshoot using the inside-out method. Begin with
the device(s) connected to the SNC first, then work your way out:
•
SCSI devices
•
SNC SCSI ports
•
SNC internal configuration
•
SNC Ethernet/IP ports
•
Check the Host Event Log
Check the event log on the host. Look for the most recent entries and determine what could be causing a
problem, then go to that event and continue troubleshooting.
Check the SNC Event and Trace Logs
Check the SNC event log through the CLI. See
entries and determine what could be causing a problem. Then go to that event and continue
troubleshooting.
Visually Inspect LEDs
Light Emitting Diodes (LEDs) are located on both sides of the SNC 4500 and on the front of the SNC 4501.
•
For the position of these LEDs on the SNC 4500, see
to
Table 1
on page 42 and
SNC 450x User's Guide
LAN/WAN
•
Ethernet host adapter or NIC in host
•
iSCSI OS driver
•
OS
•
Application
Diagnostic Commands
Table 2
on page 43.
Troubleshooting
on page 53. Look for the most recent
Figure 12
on 42 and
Figure 13
on 43. Refer
41
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