HP A7143A RAID160 SA Controller Support Guide

Installing the RAID160 SA Controller
Setting up a RAID160 SA Controller As a Boot Device
Chapter 498
Setting up a RAID160 SA Controller As a Boot
Device
The RAID160 SA controller can be set up as a boot device. To do this, you
actually set up a logical drive on the controller as a boot device.
On each RAID160 SA controller, any number of its logical drives can be
set up as boot devices. For example, if you have two controllers in a
system, and each controller has three logical drives configured on it, you
could set up two logical drives on one controller as boot devices, and all
three logical drives on the other controller as boot devices, giving you a
total of five boot devices.
Considerations
Things to consider before you set up a RAID160 SA controller as a boot
device:
• While you are using a RAID160 SA logical drive as a boot device
(that is, while HP-UX is running on it), you are limited in the
configuration tasks you can perform with the saconfig configuration
utility. This is because saconfig sees the logical drive as being in
use, so any kind of configuration changes affecting that drive are not
allowed until you are no longer using it as the boot device.
• When you are not using a logical drive as a boot device, if you clear
the controller’s configuration, that logical drive will also be deleted.
If you still want a logical drive to be set up as a boot device, you will
need to configure a logical drive and then complete the entire boot
setup process again.
• If you have trouble accessing your RAID boot data, only limited
troubleshooting tools are available. HP recommends booting from an
alternative boot media and using STM and sautil online tools. See
Chapter 6 of the HP A7143A RAID160 Support Guide, for more
information.
Dependencies
The following dependencies must be met before a RAID160 SA controller
can be set up as a boot device: