Quantum TC2201 Verify iSCSI Connection, Verify Scsi Devices, Windows NT, Verify Configuration

Chapter 3 Troubleshooting

Basic Verification

•SCSI Devices—Verify that the SCSI devices on a particular SCSI Bus can be seen in the by the TC2201. Check the Discovery page to verify visibility of devices. If the TC2201 can not see the devices, verify SCSI configuration, cabling, and termination.

Even if the SCSI devices are displayed, they are not accessible unless the mapping mode is auto-assigned or another non-empty map is used.

Verify iSCSI Connection		If SCSI devices are recognized on the SCSI buses, but do not appear to the
		iSCSI host, it may be that the iSCSI link is not properly established. Most
		switches have link indicators, showing link status. When the TC2201 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 Ethernet cable
		should cause momentary activity of this indicator as the link itself re
		initializes. Also verify that the media type of the TC2201 and attached
		switch are of corresponding types.
		Open the NT Control Panel, select “SCSI Adapters,” and double click on
	Verify SCSI Devices in
Windows NT		the iSCSI HBA. The SCSI devices should be listed.
		If no devices are listed, verify the TC2201 configuration, iSCSI HBA
		configuration, and cabling.
		If devices are listed, verify iSCSI HBA mapping mode and device
		addresses on the TC2201.
		A number of configuration changes may result in an invalid
	Verify Configuration
		configuration. If you are in doubt about the configuration, restore the
		TC2201 to the factory default configuration and proceed to configure the
		unit a step at a time, verifying the functionality of the configuration as
		changes are made.
		Verify that all desired devices have been discovered and mapped. If
	Verify Mapping
		using Indexed mapping, try swapping to Auto-assigned to see if this
		solves the problem.

Quantum TC2201 User’s Guide 59