Installing the SCSI Driver

On most of the supported HP-UX PA-RISC systems, the SCSI c720 driver is used with some of the SCSI interfaces. This driver is automatically installed as part of the HP-UX 11.0 core OS and the HP-UX 11i base Operating Environment (OE). Therefore, you do not have to install it separately.

However, you must separately install the SCSI c8xx driver, which is used by the A6829A HBA in all the supported HP-UX systems. This driver is available in the latest HP-UX bundle or at http://itrc.hp.com.




	NOTE: You must install all patches before you install the bundle containing the `c8xx` driver.




	TIP: You should keep in mind that, although the installation process installs the `c8xx` driver, it does not load the `c8xx` driver into the HP-UX kernel unless it detects one or more SCSI Ultra160 devices installed in the HP-UX system. This is done to prevent the kernel from becoming unnecessarily large. Therefore, if Ultra160 devices (for example, a SCSI Ultra160 “add-in” adapter [like the A6829A] or core I/O card) are already installed in the HP-UX system, or if you will be installing an Ultra160 add-in adapter later through OLA, you should install the `c8xx` driver now. If no SCSI Ultra160 devices are in the system, and you do not want to install any Ultra160 add-in adapters later, do not install the `c8xx` driver at this time.

The following is an overview of the steps you need to perform:

Issue the swlist command to see which patches are already installed on the system. You can get any patches you need to install from the HP IT Resource Center (ITRC) at http://itrc.hp.com.
If you do not need to install any patches (other than the c8xx bundle), go to step 3.
If you need to install one or more patches, go to step 2.
Install any necessary patches.
Follow the normal procedure to install the appropriate software bundle for your HP-UX system’s OS or OE.
Issue the swlist command to ensure that the necessary patches and the c8xx driver are present.
Check to see if the c8xx driver is loaded in the kernel, by doing one of the following two things:
- Use SAM, as follows:
  Select the “Kernel Configuration” icon.
  Select the “Drivers” icon.
  In the “Kernel Configuration” screen, check to see if the c8xx driver is in the kernel.
- Issue the following command:
  what /stand/vmunix | grep scsi_c8xx.c
  Check to see if the c8xx driver is listed.
If the driver is in the kernel, go to the section, “Configuring LUN 0”.
If the driver is not in the kernel, go to step 6
Load the c8xx driver into the kernel through SAM:
1. Select the “Kernel Configuration” icon.
2. Select the “Drivers” icon.
3. In the “Kernel Configuration” screen, follow the normal steps for loading the driver into the kernel (and building a new kernel).
NOTE: You need to reboot the system after completing these steps.
Once you have confirmed that the c8xx driver is in the kernel, go to section, “Configuring LUN 0”.

Installing the SCSI Driver

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