HP-UX 11i September 2001 Release Notes

Workstation/Server Speciﬁc Information

N4000 Server Functionality

Chapter 3

N4000 Server Functionality

This section describes 11i functionality to enable HP 9000 models HP N4000 mid-range

servers. Related operating system changes can be found in the following sections of this

document:

• “Changes to System Administration Manager (SAM) (updated for June 2001)” on

page 118

• “Improved ioscan Description Field for PCI Devices” on page 126

• “ttytype(1) Support for the N4000 Console” on page 51

• “New stty(1) Options” on page 51

• “SCSI Adapters” on page 44

• “Service Processor (GSP or MP)” on page 45

With the exception of some new system build options, changes to HP-UX 11i for the

N4000 servers will have little, if any, bearing on customers using legacy PA-RISC

systems.

For the purpose of this document, all systems prior to N4000 are termed “legacy”

(including B-, C-, and D-Class low-end systems, K-Class mid-range systems, and T- and

V-Class high-end systems).

Platform Infrastructure

The HP N4000 servers are the ﬁrst HP systems based on PA-RISC processors with IA-64

Core Electronic Complex (CEC) components. This “hybrid” system contains a new

modular platform infrastructure. New kernel interfaces and platform modules are being

provided to support all current platforms, whether PA-based, IA-64-based, or hybrid.

Subsequent sections describe the following new platform architecture components:

• Platform Support Modules (PSM)

The PSMs control speciﬁc hardware or functions of a given platform. PSMs designed

for the new functionality include the following:

— PAT PSM

— SBA PSM

— SAPIC PSM

• Context Dependent I/O module (CDIO)

Because of the hierarchal dependency requirements of some platform modules, not all

new platform code is handled by PSMs. The following CDIOs are included in HP-UX:

— CB CDIO

— LBA CDIO

— PCI CDIO

— PCItoPCI CDIO

Impact on Legacy Systems

Legacy system users will see minimal impact in their applications or system

administration tools due to the changes in the platform infrastructure.