Isolating External Data Path Faults On A Sas Storage System - HP 2000fc Reference Manual

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
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Orange – Host link is degraded
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Red – Host link is down
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An indication of link down can be caused by one or more of the following
conditions:
A faulty HBA in the host
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A faulty SAS cable
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A faulty port in the host interface module
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A disconnected cable
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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.
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Speed – Actual link speed in Gbit per second per PHY lane.
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Number of Active Lanes - The number of active PHY lanes and the number of
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lanes in the port.
Port WWN – Port World Wide Name.
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Health – Port status:
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■
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SAS Chip Revision – Hardware revision level of the SAS expander processor in
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the controller.
SAS Libraries Revision – Firmware revision level of the SAS libraries.
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210 HP StorageWorks 2000 Family Modular Smart Array reference guide • August 2008
Healthy – All PHY lanes are active in the port.
Degraded – At least one PHY lane is inactive in the port.