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18 Sun StorEdge 3900 and 6900 2.0 Series Troubleshooting Guide • March 2003
Sun Proprietary/Confidential: Internal Use Only
2. Using the Storage Automated Diagnostic Environment GUI Topology, determine
which virtualization engine is in the path you need to disable.
3. Use the worldwide name (WWN) of the virtualization engine that is in the
unconfigure command, as follows:
4. Verify that the I/O has halted.
Disabling the path halts the I/O only up to the A3 to B3 link (see
FIGURE 5-8). I/O
continues to move over the T1 and T2 data paths, as well as the A4 to B4 links to the
Sun StorEdge T3+ array.
Suspending the I/O
Use one of the following methods to suspend the I/O while the failover occurs:
■ Stop all customer applications that are accessing the Sun StorEdge T3+ array.
■ Manually pull the link from the Sun StorEdge T3+ array to the switch and wait
for a Sun StorEdge T3+ array logical unit number (LUN) failover.
■ After the failover occurs, replace the cable and proceed with the testing and
FRU isolation.
■ After the testing and any FRU replacement are finished, return the Controller
state back to the default by using virtualization engine failback. Refer to “To
Failback the Virtualization Engine” on page 120.
# cfgadm -c unconfigure c2::2b000060220041f4
# cfgadm -al
Ap_Id Type Receptacle Occupant Condition
c0 scsi-bus connected configured unknown
c0::dsk/c0t0d0 disk connected configured unknown
c0::dsk/c0t1d0 disk connected configured unknown
c1 scsi-bus connected configured unknown
c1::dsk/c1t6d0 CD-ROM connected configured unknown
c2 fc-fabric connected unconfigured unknown
c2::210100e08b23fa25 unknown connected unconfigured unknown
c2::2b000060220041f4 disk connected unconfigured unknown
c3 fc-fabric connected configured unknown
c3::210100e08b230926 unknown connected unconfigured unknown
c3::2b000060220041f9 disk connected configured unknown
c4 fc-private connected unconfigured unknown
c5 fc connected unconfigured unknown