Verifying mapping, Verifying devices, Verifying the host configuration – HP Network Storage Router m2402 User Manual

Page 198: Verifying hba device driver information

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Basic Troubleshooting

204

Network Storage Router M2402 User Guide

Verifying Mapping

If the router is working in FC-to-SCSI Initiator mode and is using Indexed or SCC
mapping, try changing to Auto-assigned mapping.

Verifying Devices

It may be useful to connect the SCSI target devices directly to a SCSI interface
(for example, a host SCSI bus) to verify that the devices are functional.

Verifying the Host Configuration

In some cases, it may be that the FC 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 required configuration. It may also be useful to ensure that
the current version of the HBA driver is being used.

There are cases where 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 (for
example, 16 and higher.) To resolve this situation, configure the router 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

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.

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