HP Tape Library Interface Manager Software - Manual (Page 104)

104 Troubleshooting Chapter 5
connecting to a LVDS card, but the bus data transfer performance will be
poor. Do not connect a SE SCSI drive into a HVDS card.
■ Device ID - Each device on a SCSI bus must have a unique ID.
■ Cabling - Check SCSI cables to verify they are functional. SCSI rules for
total length, distance between devices, and stub length must be adhered
to. Connections should also be checked and reseated if necessary.
■ SCSI Devices - Verify that the SCSI devices on a particular SCSI bus can be
seen in the Interface Cards menu of the IM.
Verify Fibre Channel Connection
If SCSI devices are recognized on the SCSI buses, but do not appear to the
Fibre Channel host, it may be that the Fibre Channel link is not properly
established. Most hubs and switches have link indicators, showing link status.
When the IM is connected and powered on, this link indicator should show a
good link. If it does not, check the cabling or connections.
As a means of verifying link integrity when connected to a functional host,
disconnecting then reconnecting the Fibre Channel cable should cause
momentary activity of this indicator as the link re-initializes. Verify that the
media type of the IM and attached hub, HBA, or switch are of corresponding
types.
Verify SCSI Devices in Windows NT
If running FC-to-SCSI mapping mode:
1. Open the
NT Control Panel
.
2. Select [SCSI Adapters].
3. Double click on the [FC HBA]. The SCSI devices should be listed.
4. If no devices are listed, verify the IM configuration, FC HBA configuration,
and cabling.
5. If devices are listed, verify FC HBA mapping mode or AL-PA addresses on
the IM.
6. Windows NT must be rebooted with all SCSI devices and the IM left on
before NT will recognize the devices.