Configuring HP-UX For Peripherals

Chapter 2 35

Managing PCI Cards with OLAR

PCI Card OLAR Overview and Concepts

Introduction

The letters O, L, A and R stand for On Line Addition [and] Replacement.

This, of course, refers to the ability of a PCI I/O card to be replaced

(removed and/or added) to an HP-UX computer system designed to

support this feature without the need for completely shutting down, then

re-booting the system or unnecessarily affecting other system

components. The system hardware uses per-slot power control combined

with operating system support to enable this feature.

Initially, not all add-in cards will have this capability but over time users

should see many cards adding this capability to their set of functions.

IMPORTANT Certain “Classes” of hardware are not intended for access by users. At

this time this includes V-Class and Superdome systems. HP recommends

that these systems only be opened by a qualiﬁed HP Engineer. Failure to

observe this requirement can validate any support agreement or

warranty to which the owner might otherwise be entitled.

Important Terms and Concepts

Table 2-1 Terms used in this section

Term Meaning

OLAR All aspects of the OLAR feature

including On-line Addition (OLA)

and On-line Replacement (OLR).

Power Domain A grouping of 1 or more interface

card slots that are powered on or off

as a unit. Current systems have one

slot per power domain.