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Chapter 11 Example of Fault Isolation 149
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The primary path to Drive F: failed. The alternate path is currently handling all
of the I/O.
3. Check the HBA
Using the HBA utility (Qlogic SANblade in this example), confirm the fault.
FIGURE 11-3 Fault Confirmation Using QLogic SunBlade
4. Isolate the components in the path.
The components in the path are the HBA, the cable, the switch-side GBIC, and the
Sun StorEdge network FC switch itself.
To isolate all components, use a combination of the Storage Automated Diagnostic
Environment and the HBA utility (QLogic SunBlade).
Note – If no HBA utility is present, or if the utilities do not offer diagnostics, a best
guess effort will have to suffice. Storage Automated Diagnostic Environment cannot
test HBAs on Microsoft Windows 2000 hosts at this time.