Chapter 1. Components and Installation

NetWorker BusinesSuite Module for Informix (DBMI), used with INFORMIX® – OnLine Dynamic Server and IRIX NetWorker, provides reliable, high–performance data protection for local or distributed OnLine Dynamic Server databases.  BusinesSuite Module for Informix integrates backup and restore procedures for OnLine Dynamic Server databases into NetWorker provided network–wide data protection facilities.

The Importance of Backing Up Mission Critical Data

Although the reliability of computer equipment has improved greatly in recent years, hardware failures still occur, sometimes with catastrophic results.

In a client-server environment, data can be lost not only after hardware failures, but also because of user errors.  Software bugs or procedural flaws and simple user error are common culprits, requiring database media restores.  A viable backup strategy can help you recover from these potentially disastrous situations.

Many database administrators do not recognize the danger of failing to make regular backups of database objects and frequent backups of a logical log.  If all logical logs are lost, a database can only be recovered to the time of its last full backup.  Without backups or logical logs, the database cannot be recovered at all.


ON-Bar is a utility, included with INFORMIX® – OnLine Dynamic Server, that provides online database backup and restore services for an OnLine Dynamic Server dbobject.  ON-Bar provides

  • online, concurrent backups and restores of dbspace, blobspace, and logical log files

  • automated, continuous logical log backup or on-demand logical log backups

  • an interface to popular storage management software

IRIX NetWorker

IRIX NetWorker is a high-capacity, easy-to-use network data storage management solution that provides data backup and recovery for heterogeneous networks of servers and clients.  NetWorker simplifies storage management and reduces administrative burden by automating and centralizing your data storage operations.  With NetWorker, you can

  • perform automated “lights–out” backups during off-peak hours

  • use centralized administration to configure, monitor, and control backups from anywhere on a network

  • automate tape handling tasks using SmartMedia™, an intelligent media manager that supports a wide variety of 4 mm DAT, 8 mm, and high-end devices, as well as bar code label recognition and cleaning cartridge support

  • increase backup performance by simultaneously sending data from multiple clients to the backup server

  • use concurrent device support to direct data streams to multiple backup devices for even greater speed

NetWorker BusinesSuite Module for Informix

NetWorker DBMI is an add-on module for NetWorker that provides automated backup media management and scheduling for ON-Bar.  BusinesSuite Module for Informix provides

  • true “lights out” database storage management through automated scheduling, autochanger support, and electronic tape labeling and tracking

  • support for local backup or distributed backup to a centralized backup server

  • high performance support for concurrent devices, such as DLT drives

Chapter 2 provides a detailed breakdown of the NetWorker daemon processes and a description of how they function during a scheduled backup and on-demand recover.

Installing the Components

There are three components to install: the NetWorker server, the database module, and Informix ON-Bar.

Installing the NetWorker Server

You must install a NetWorker server, version 4.2.5 or higher, if one is not already installed.  In general, there are three steps:

  1. Load the IRIX NetWorker distribution CD-ROM into a drive.

  2. Run inst and install the appropriate product images.

  3. Start the NetWorker daemons, license the server and jukebox (autochanger) support if applicable, and configure client backups.

Refer to the IRIX NetWorker Installation Guide for complete instructions on how to install, license, and configure the NetWorker server.

Installation Requirements for BusinesSuite Module for Informix

Before installing the BusinesSuite Module for Informix, you should have the following:

  • a Silicon Graphics server running Informix and IRIX 6.2 or higher

  • 5 MB of free disk space to store BusinesSuite Module for Informix and provide space for new indexes

  • a tape drive or jukebox that is compatible with IRIX NetWorker

Installing the NetWorker Database Module

Follow this procedure to install the NetWorker BusinesSuite Module for Informix:

  1. Load the IRIX NetWorker software distribution CD-ROM.

  2. On the NetWorker server, switch user to root.

    % /bin/su - 

    If the NetWorker server is already running, stop it now:

    # /etc/init.d/networker stop 

  3. Run the inst command, specifying the location of the NetWorker distribution:

    # inst -f /CDROM/dist 
    inst> list 

  4. Select subsystems inside inst.  Use Table 1-1 as a guide to selecting product images.  To install the BusinesSuite Module for Informix software and documentation, enter these commands:

    Inst> keep * 
    Inst> install networker4.sw.DBMI networker4.books.NetWorkerDBMI 

    For more information on the available product images, refer to the IRIX NetWorker Release Notes.  For details about inst, refer to IRIX Admin: Software Installation and Licensing, or see the inst(1M) reference page.

    Table 1-1. Subsystems for NetWorker Servers





    Database Module for Informix, connector for ON-Bar

    Optional; license required


    Online version of DBMI book

    Optional; InSight needed

  5. Perform the installation and exit inst:

    Inst> go 
    Inst> quit 

  6. Configure NetWorker pools and label templates for DBMI with this command:

    # /usr/etc/dbmi_config 

  7. Start the NetWorker daemons with this command:

    # /etc/init.d/networker start 

You must purchase a NetWorker BusinesSuite Module for Informix for every NetWorker server (machine) on which you want to use BusinesSuite Module for Informix.  Each NetWorker Database Module must be licensed separately.  Refer to the section “Licensing NetWorker Severs” in the IRIX NetWorker Installation Guide for more information.

Installing INFORMIX ON-Bar

For specific ON-Bar installation instructions, refer to your INFORMIX® – OnLine Dynamic Server Installation Guide.  If you encounter problems during this phase, please refer to the documentation, or contact Informix technical support.