StorCase Technology CSI-to-SCSI Single & Dual RAID - Manual (Page 154)

Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
Appendix C - Troubleshooting 141
To change the backoff percentage:
1. Select Configuration Menu from the System Menu and press Enter.
The Configuration Menu should now display (Figure 31).
2. Select Backoff Percent and press Enter.
The Backoff Percent screen should now display.
3. Enter the desired backoff percent and press Enter.
The percentage is entered as a 3-digit number, using the following format - 00.0%
(default is 01.0%).
Host SCSI Channel Problems
•
Host system does not see the controller.
Verify in the Ctrl-E status screen that there is Host Channel negotiation. Verify that the host
channel target ID and array LUN numbers are configured correctly and not overlapping.
•
Host SCSI BIOS scan hangs.
Check that termination is set correctly at the system and the drive enclosure. Check that the
device ID set in the Administrator Utility does not conflict with any other devices on the host
SCSI channel.
•
Only one array is displayed during host SCSI BIOS scan.
Check that LUN support is enabled. Most SCSI host adapters ship with LUN support disabled
(factory default). Use Display Array Status to check the LUN for each array. If LUN 0 is not
assigned to an array (or some of the LUN numbers were skipped), use the Change LUN
Assignment option for each array until the LUN starts with 0 with no LUNs skipped.
•
All arrays are displayed during host SCSI BIOS scan, but only one array is
seen by the O/S.
SCSI drivers for some operating systems require a parameter switch to enable LUN support.
Check the driver documentation for the host SCSI channel.