Chapter 4
Troubleshooting Using RAIDar
53
Isolating External Data Path Faults on a SAS
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 healthy
■
Orange – Host link is degraded
■
Red – Host link is down
An indication of link down can be caused by one or more of the following
conditions:
■
A faulty HBA in the host
■
A faulty SAS cable
■
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:
■
Topology – Port connection type.
■
Speed – Actual link speed in Gbit per second per PHY lane.
■
Number of Active Lanes - The number of active PHY lanes and the number of
lanes in the port.
■
Port WWN – Port World Wide Name.
■
Health – Port status:
■
Healthy – All PHY lanes are active in the port.
■
Degraded – At least one PHY lane is inactive in the port.
■
SAS Chip Revision – Hardware revision level of the SAS expander processor in
the controller.
■
SAS Libraries Revision – Firmware revision level of the SAS libraries.
Summary of Contents for 2000 Series
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