HP StorageWorks MSA2012i HP StorageWorks 2000 Modular Smart Array Reference Gu - Page 210
Isolating External Data Path Faults on a SAS Storage System
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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. 210 HP StorageWorks 2000 Family Modular Smart Array reference guide • August 2008