R/Evolution 2000 Series, Troubleshooting Manual

Page: 51 / 130

Chapter 4 Troubleshooting Using RAIDar 51
Isolating External Data Path Faults on an FC
Storage System
To troubleshoot external data path faults, perform the following steps:
1. Select Monitor > Status > Advanced Settings > Host Port Status.
This page provides a graphical representation of controller host port status and port
details.
2. Review the graphical representation of host port status.
■
Green – Host link is up
■
Red – Host link is down
■
White – Port is unused and does not contain an SFP
An indication of link down can be caused by one or more of the following
conditions:
■
A faulty HBA in the host
■
A faulty Fibre Channel cable
■
A faulty SFP
■
A faulty port in the host interface module
■
A disconnected cable
3. To target the cause of the link failure, view the host port details by clicking on a
port in the graphical view and then reviewing the details listed below it.
The data displayed includes:
■
Host Port Status Details – Selected controller and port number.
■
SFP Detect – SFP is present or not present. An SFP is used to connect the FC
host port through an FC cable to another FC device.
■
Receive Signal – Signal is present or not present.
■
Link Status – Link is up (active) or down (inactive).
■
Signal Detect – Signal is detected or no signal.
■
Topology – One of the following values:
■
Point-to-Point
■
Loop, if the loop is inactive
■
Private Loop, if the port is directly attached to a host
■
Public Loop, if the port is attached to a switch
■
Speed – 2 Gbit/sec or 4 Gbit/sec.
■
FC Address – 24-bit FC address, or Unavailable if the FC link is not active.
■
Node WWN – Controller module node World Wide Name.
■
Port WWN – Port World Wide Name.