White Paper

Support of PCI/PCI-Express Error Handling and Error

Recovery on HP-UX

PCI error handling and error recovery are supported only with some HP-UX version, I/O products and

servers. For more information, see the support matrix available at the following location:

http://www.hp.com/go/hpux-networking-docs under HP-UX 11i v3 I/O Cards category.

There are several kernel tunables that can change the behavior of PCI error recovery operation. For

more information about the kernel tunables, see Tunable Kernel Parameters section in the PCI Error

Recovery Product Note, 4

Edition, March 2010 document, posted at the following location:

http://www.hp.com/go/hpux-networking-docs under HP-UX 11i v3 I/O Cards category.

The above link provides information about PCI Error Recovery functionality, which is supported on HP-

UX 11i v3 system.

For more information about the type of errors and corresponding events supported by the product on

all platforms, see PCI / PCIe Error Recovery Product Note available at

http://www.hp.com/go/hpux-networking-docs under HP-UX 11i v3 I/O Cards category.

Summary

The basic RAS features designed for HP Integrity and HP 9000 servers, when coupled with the PCI

error handling and recovery mechanisms, enables high-end servers to meet the needs of a

mission-critical environment. This is made possible by preventing customers from experiencing

down-time as a result of system hang or unusable state of a system.

References

For more information about Error Handling functionality supported on HP-UX 11i v2 system, see PCI

Error Handling Product Note 3rd Edition, at the following location:

http://www.hp.com/go/hpux-networking-docs under HP-UX 11i v2 I/O Cards

Glossary

Following is a list of terms used throughout this document:

Name Definition

LBA Local Bus Adapter

EBA Express Bus Adapter

Machine Check Highest Priority interruption on Itanium® based

Abort (MCA) / systems (MCA) and on PA-RISC based systems

HPMC (HPMC).

PIO Programmable IO

PCI Peripheral Component Interconnect

HardFail mode The mode of operation of LBA, during which PCI

errors cause an HPMC/MCA for fatal error

during PIO read.