HPlogo High Availability FailOver/iX Manual > Chapter 2 Product Description

Components

MPE documents

Complete PDF
Table of Contents

E0803 Edition 2
E1100 Edition 1 ♥

The HAFO product has multiple components:
  • System Boot Failover Initialization Utility

  • SYSGEN HAFO commands

  • HASTAT HAFO status report

  • HAFOCONF configuration file

Each of these components are briefly described.

System Boot Failover Initialization Utility


During system boot, the HAFO configuration utility reads the HAFOCONF configuration file and arms HAFO. The alternate path information becomes frozen in memory and is available to any configured devices when needed to complete an HAFO event.

High Availability Failover Commands


The following commands are used to configure and maintain the HAFOCONF configuration file.
  • addconf (ad) — adds high availability device configuration

  • delconf (de) — deletes high availability device configuration

  • listconf (li) — lists high availability device configurations

  • doha — validates high availability device configurations, and activates the HAFO configuration

  • goback (go) — instructs device manage to use the primary data path

  • help — get help on HAFO commands

  • exit — exit the "ha" section and return to the "io" section of SYSGEN.

These commands, located in SYSGEN, are documented in the Chapter 4 "Configuration" Goback is documented in more detail in the Chapter 6 "Recovering From a Failover".

High Availability Failover Status


With the installation of HAFO, a new reporting command, HASTAT, is supplied. The report lists each configured LDEV, its primary and alternate paths, and their status. This feature is documented in detail in the Chapter 5 "Monitoring Status".

HAFOCONF Configuration File


Each configured HAFO ldev will have a record entry in the HAFOCONF configuration file. This file will reside in SYSGEN's CONFIG groups. The HAFO information configured or modified using the HAFO commands resides in this file. HASTAT displays the High Availability FailOver/iX Status information available from this file.




How Failover Works


Chapter 3 Installation