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2. If using iprconfig version less that 2.0.0, select Work with configuration and press Enter.
3. Select Work with SCSI bus configuration and press Enter.
4. Select your adapter from the list by pressing 1 then press Enter.
Note: This screen content varies based on the adapter that you select.
Change SCSI Bus Configuration
Current Bus configurations are shown. To change
setting hit "c" for options menu. Highlight desired
option then hit Enter
c=Change Setting
Adapter Location: 000:01:01.0
BUS 0
Maximum Bus Throughput . . : 320 MB/s
BUS 1
Wide Enabled . . . . . . . : Yes
Maximum Bus Throughput . . : 320 MB/s
Press Enter to Continue
e=Exit
q=Cancel
5. Select Maximum Bus Throughput field under the desired bus and press c.
6. Select the desired bus speed: 5, 10, 20, 40, 80, 160, or 320 MB/s, and press Enter.
Note: Depending on your hardware, some of these options may not be available.
7. Press Enter to continue.
8. Press c to confirm the changes.
Wide Bus Enabled
If you are attaching an external device with an 8-bit SCSI interface cable, set Wide bus enabled to no.
Follow the steps in "Limit Adapter Speed Using the Maximum SCSI Bus Speed in MB/s" on page 20.
Quick Arbitration and Select (QAS) Capability
The QAS capability is automatically controlled by the adapter.
Setting Bus Speed at Boot
If running a 2.6 kernel, a module parameter is provided to allow for setting the maximum bus speed at
boot time before the iprinit utility runs. Normally this should not be needed, but if you are having difficulty
booting due to running at 160 MB/s, bus speed can be lowered to 80 MB/s by using ipr.max_speed=0 on
the kernel command line.
Problem Determination
If you encounter any problems with the adapter after the installation, refer to your system unit
documentation for information about running diagnostics or other problem-determination procedures. Refer
to the PCI-X SCSI RAID Controller Reference Guide for Linux, order number SA23-1327.
Chapter 7. Installing and Setting Up Software for the PCI-X Dual Channel Ultra320 SCSI RAID Adapter (Linux )
320 MB/s
*160 MB/s
80 MB/s
40 MB/s
20 MB/s
10 MB/s
5 MB/s
21
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