Sun Microsystems 3900, 6900 manual To Isolate the T1 or T2 Data Path

■When you insert a loopback connector in to the T port, no green light appears to indicate a proper insertion. However, the test will run and be valid.

■If only one of the links has failed and the I/O is traveling over the remaining link, I/O is automatically routed over the repaired link by the switch after the failed link is replaced and recabled. No manual intervention is required.

■If both links have failed and a LUN failover has occurred, you must manually run a failbackt3path command to return the paths to their optimal state, after you repair and recable the links.

▼To Isolate the T1 or T2 Data Path

1.Run linktest from the Storage Automated Diagnostic Environment for a guided isolation procedure.

2.After replacing the failed FRU, run failbackt3path , if needed.

94 Sun StorEdge 3900 and 6900 Series 2.0 Troubleshooting Guide • March 2003

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