Sun Microsystems Virtual Tape Library User Manual
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Appendix C Troubleshooting
235
2. If the operating system does not show the device, got to “The operating system
cannot detect the device” on page 235.
3. If the operating system does show the device, go to “Applications cannot see the
Case: The operating system cannot detect the device
1. If the operating system does not see the device, use the VTL console to check the
status of the virtual device.
2. If the virtual device is offline, stop here, and go to “Virtual tapes are shown
3. If the virtual device is online, check the client configuration. In the VTL console,
right-click on the client, and examine the Resources tab of the properties sheet
in the right-hand pane.
4. If you do not see virtual devices on the Resources tab, assign devices to the
client.Make sure that devices that are shared by clients attach in Read/Write
non-exclusive
mode. On the client, rescan devices.
5. If the client can see the devices after rescanning, stop here.
6. If the client cannot see its assigned devices, check World Wide Port Names
(WWPNs). In the VTL console, right-click on the client, and select Properties
from the context menu. Record the initiator and target WWPNs.
7. Select the Physical Resources object and locate the HBA that corresponds to the
recorded target WWPN. In the property sheet at right, select the SNS table tab
and look up initiator WWPN that you recorded in the previous step. If multiple
HBAs exist, either from the client host or from the VTL target, look up all entries
from all target SNS tables.
8. If the VTL console does not record the correct initiator WWPN, unassign the client
and the reassign it using the correct mapping. On the client, rescan devices.
9. If the client can see the devices after rescanning, stop here.
Case: Applications cannot see the device
1. If an application fails to find the device, see “The backup application cannot see
the device at all” on page 236.
2. If an application finds the device in an unexpected location, see “The backup
software does not see the device in the expected place” on page 236.