HP StorageWorks 2000 Modular Smart Array Reference Guide (481599-003, August 2008)
210 HP StorageWorks 2000 Family Modular Smart Array reference guide • August 2008
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.