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88 Sun StorEdge 3900 and 6900 Series 2.0 Troubleshooting Guide • March 2003
Sun Proprietary/Confidential: Internal Use Only
Troubleshooting the T1 or T2 Data Path
When you are troubleshooting the T1 or T2 data path, note the following:
■ Two T port links provide redundancy.
■ If one of the two links is lost, no Sun StorEdge T3+ array LUN failover occurs and
no pathing failures are detected.
■ If both T port links fail, a Sun StorEdge T3+ array LUN failover occurs, as one of
the virtualization engines takes control of the I/O operations. One of the Sun
StorEdge T3+ array LUNs fail over, as all I/O is routed to the controlling
virtualization engine.
■ The host detects a pathing failure in its multipathing software.