Chaparral K5312/K7313 - Manual (Page 127)

Troubleshooting
9-3
The default setting is 1% backoff. This default allows you to easily work with drives
that have the same nominal capacity, but different actual capacities. The backoff
percentage affects all arrays created on the controller after you set the percentage.
If the drives in an array are not equal in size, the array capacity in a RAID-5 array is
based on the smallest member’s capacity. The backoff percentage is then backed off
the capacity from that amount.
To change the backoff percentage:
1
From the System Menu, select Configuration Menu and press Enter.
The Configuration Menu displays.
2
Select Backoff Percent and press Enter.
The Backoff Percent screen displays.
3
Enter the backoff percent you want to use and press Enter.
Enter the percentage as three digits in the following format: 00.0%. The default
is 01.0%.
Host SCSI Channel Problems
Problem: The host SCSI BIOS scan displays “Device name not available.”
The controller is properly connected, but no arrays have been created. Use the Disk
Array Administrator to create an array and reboot the host system.
Problem: The host SCSI BIOS scan hangs.
Check that termination is set correctly in the Configuration Menu and the drive
enclosure. Check that the device ID set in the Disk Array Administrator does not