StorCase Technology Fibre-to-SCSI Single RAID - Manual (Page 147)

S10C100 User's Guide - Rev. A01 StorCase Technology, Inc.
Appendix C - Troubleshooting 135
•
Screen is updated, but won't respond to keystrokes.
Disable hardware flow control on the terminal or terminal emulator. The RAID Controller Module
supports XON/XOFF flow control and works properly in most cases with no flow control.
•
Screen looks correct, but clock is not updated.
Check to make sure that the InfoStation is still powered on. If using XON/XOFF, press
Ctrl-Q.
•
Screen is updated and menus appear correct, but boxes around menus look in-
correct.
Try a different font in the terminal emulator program. If a correct font cannot be found, set ASCII
display to "Yes" in the Display option of the Configuration Menu (Figure 38).
•
The host system does not see the controller.
Press CTRL-E and verify that there is a valid Host Channel FC World Wide Name (WWN). Verify
that the port ID is active and a valid Arbitrated Loop Port Address (AL_PA) is assigned. Verify
that the array LUN numbers are configured correctly and not overlapping.
Array Problems
•
Array is much smaller than it should be.
The backoff percentage may be set higher than 1%, which is causing the array to be much
smaller than the full size of its member disks.
The backoff percentage reduces the capacity of the array by the given percentage. The
backoff percentage helps when assigning spares by compensating for the minor capacity
differences that occur between drive manufacturers. It allows the user to work with drives
of the same nominal capacity, but with dfferent actual capacities (for example, two 18GB
drives from different manufacturers may differ in capacity by 100MB).
The default setting is 1% backoff. Once set, the backoff percentage affects all arrays created
on the controller.