Quantum FC1202, User Manual

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Chapter 3 Troubleshooting
Basic Troubleshooting
90 Quantum FC1202 User’s Guide
and configure the unit one step at a time, verifying the functionality of the
configuration after each change is made.
Caution:
Restoring factory defaults overwrites user configurations.
In the Serial/Telnet interface, use the save configuration
option before resetting factory defaults to allow recovery
of user configuration.
Verifying Mapping
3
If the Interface Controller is working in Fibre Channel-to-SCSI Initiator
mode and is using Indexed or SCC mapping, try changing to Auto-
assigned mapping.
Verifying Devices
3
Connecting the SCSI target devices directly to a SCSI interface (for
example, a host SCSI bus) to verify that the devices are functional
is
recommended.
Verifying the Host
Configuration
3
In some cases, the Fibre Channel HBA or host device driver may not be
working properly. Check the configuration of these elements.
It may be useful to check the release notes for the device driver to see if
there are any specific issues or a required configuration. It may also be
useful to ensure that the current version of the HBA driver is being used.
Older applications can have expectations about what constitutes a valid
SCSI ID, and thus may not correctly handle certain mappings. This is not
an issue for the operating system or most applications. However, some
applications may exhibit difficulties addressing target IDs greater than 15
(16 and higher.) To resolve this situation, configure the Interface
Controller to use hard addressing and set the AL_PA to a value that the
HBA will be able to map with an ID less than 16.
Verifying HBA
Device Driver
Information
3
Review the HBA device driver Readme.txt file for configuration specifics.
An HBA may require a different configuration. HBAs typically come
with utility programs to view or change their configurations.