HP-UX 11i September 2001 Release Notes

Chapter 5
93
5 I/0 and Networking Cards
Online Addition and Replacement of I/O Adapters (new
at 11i original release)
Online Addition and Replacement (or OLAR) of PCI I/O cards (adapters) is a new HP-UX
software feature that allows for adding and replacing PCI I/O cards while a system is
running, eliminating the need to reboot.
This feature enhances an overall high availability solution since the system can remain
active while an I/O adapter is being added or replaced. When combined with other high
availability products, such as HP MC/ServiceGuard, system availability is significantly
improved.
SAM provides the system administration interface for OLAR. The first release of OLAR
in HP-UX 11i provides support for the addition and replacement of I/O cards on L-Class,
N-Class, and Superdome systems. Many future HP 9000 systems are being designed
with this feature as well.
For more information about the OLAR feature, see:
• “Changes to System Administration Manager (SAM) (updated for June 2001)” on
page 118
• Configuring HP-UX for Peripherals, part no. B2355-90698
• Managing Systems and Workgroups: A Guide for HP-UX System Administrators, part
number B2355-90742
NOTE Updated for HP-UX 11i June 2001
SAM patch PHCO_23004 for 11i (included in the HWEnable11i patch bundle and
automatically installed) changes the behavior of the PCI card slot LED (Attention
Indicator) to conform with the newly implemented PCI SHPC (Standard Hotplug
Controller) specification.
Essentially, the meanings for OLAR “FLASHING” (BLINKING) and “ON” LED are
reversed to meet the specification.
See “New Attention Indicator Behavior (updated for September 2001)” on page 37 in
Chapter 2 for more details.