System information

Chapter 10. Using the Advanced Systems Management Interface 309
For example, if you choose the Hardware Management Console (HMC) as the source for a
firmware update, the HMC must be used to perform the update. You would use the panel
shown in Figure 10-44 to select your source for firmware updates.
Figure 10-44 Selecting the firmware update policy
The default setting of this policy is not to allow firmware updates via the operating system.
Note that tis policy only takes effect when a system is HMC managed. When a system is not
HMC managed, firmware updates can only be made through the operating system, so this
policy setting is ignored.
When this policy is set to allow firmware updates from the operating system, firmware
updates from an HMC are not allowed, unless the system is powered off. When a system is
powered off, firmware updates can be performed from an HMC, regardless of the setting of
this policy. However, care should be taken when updating firmware from both an HMC and
the operating system. For example, i5/OS load source synchronization may cause firmware
updated from an HMC to be overlaid with older firmware from the load source.
PCI error injection policy
The policy for PCI error injection can be set using the display shown in Figure 10-45.
You can enable or disable the injection of errors onto the PCI bus. (The PCI bus is one of the
hardware busses that the PCI IOP and IOA cards are plugged into. An IOP card is defined as
Input Output Processor card and an IOA card is defined as an Input Output Adapter card.)
Figure 10-45 PCI error injection policy
Enabling or disabling the PCI error injection policy
This option controls the PCI error injection policy. If enabled, utilities on the host operating
system can inject PCI errors onto the bus. One use of this, for example, is where independent
software developers who develop hardware device drivers can inject errors to test the error
handling code in the device driver.
We recommend that you set the policy to Disabled and only use Enabled under those
circumstances where you might want to test a newly developed error handling function.