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sisscsia0 Available 20-58
scsi0
Available 20-58-00
scsi1
Available 20-58-01
If the message on your screen indicates your adapter is Defined instead of Available, shut down your
machine. Check the PCI-X Dual Channel Ultra320 SCSI Adapter to ensure it is installed correctly. Go to
"Installing the Adapter" on page 9. Then return to this section and repeat step 1.
Note: If the message on your screen indicates your adapter is Defined a second time, it may be
necessary to contact your service representative.
Updating Hard Disk Drive and Adapter Microcode
Disk drives attached to this adapter must contain the latest microcode level.
The latest microcode level for your drive model and PCI-X Dual Channel Ultra320 SCSI Adapter can be
found at the Download pSeries and RS/6000 Microcode Updates Web site:
https://techsupport.services.ibm.com/server/mdownload/download.html.
The drive microcode download you need should match the name of one of the drive model numbers
located under the DASD Microcode listing found on the Web site. The drive machine type and model of
the drive you are updating can be identified by reading its VPD (Vital Product Data). Similarly, the name of
the PCI-X Dual Channel Ultra320 SCSI Adapter Microcode download you need can be found under the
Adapter Microcode listing on the Web site.
Configuring the PCI-X Dual Channel Ultra320 SCSI Adapter
The PCI-X Dual Channel Ultra320 SCSI Adapter permits up to 320 MB/s operation with LVD devices on a
wide bus. With single-end (SE) devices, it can run up to 40 MB/s. The maximum speed and bus width are
automatically negotiated based on the characteristics of the attached device.
You can use SMIT to control speed and bus width for devices as described in the following sections.
Limit Adapter Speed Using the Maximum SCSI Bus Speed in MB/s
The default maximum adapter speed is 320 MB/s for LVD mode and 40 MB/s for SE mode. If you are not
successful running at these speeds, you can reduce the adapter speed by changing the Maximum SCSI
Bus Speed.
To limit adapter speed, do the following:
1. At the command prompt, type smit, and press Enter.
2. Select Devices and press Enter.
3. Select SCSI Adapter and press Enter.
4. Select Change/Show Characteristics of a SCSI Adapter and press Enter.
5. Select your adapter SCSI bus from the list and press Enter.
Note: This screen content varies based on the adapter that you select.
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PCI-X Dual Channel Ultra320 SCSI Adapter Installation and Using Guide
PCI-X Dual Channel Ultra320 SCSI Adapter
PCI-X Dual Channel Ultra320 SCSI Adapter bus
PCI-X Dual Channel Ultra320 SCSI Adapter bus
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