Introduction

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# Introduction

This introduction gives a brief outline of the different types of installation possible with the current version of PAC/PAA, and provides information you should read before starting the actual installation.

- Installing PAC/PAA for the First Time

- Converting from a Previous Version

- Establishing a Separate PAA Production Environment

- Using PAC Utilities without PAC/PAA

## Installing PAC/PAA for the First Time

If you are installing PAC for the first time or in an environment where PAC is not yet installed, read the General Information, and then proceed with the installation method described in First-Time Installation.

## Converting from a Previous Version

If you have already used a previous version of PAC / PAA and a PAC / PAA system file containing data in the format of that version, the data must be converted to PAC 2.7.1 format. You should read the General Information, then proceed with the installation method described in Conversion Installation.

## Establishing a Separate PAA Production Environment

It is possible to establish a PAA production environment or many PAA production environments separate from where the main Natural system file where PAC/PAA is installed. There can be several PAA system files running concurrently at your site. While a single PAC system can serve several environments, a single PAA system serves a single production environment. The details of establishing a separate PAA production environment are given in the section Establishing a Separate PAA Environment.

## Using PAC Utilities without PAC/PAA

Using the utility MIGRATE you can load Natural objects, error messages, DDMs and foreign objects migrated to the following locations:

- Natural

- Predict

- Foreign

The compare utility is useful for comparing objects in Natural libraries. Refer to Installing PAC Utilities Only for details.

### On this page

- Installing PAC/PAA for the First Time
- Converting from a Previous Version
- Establishing a Separate PAA Production Environment
- Using PAC Utilities without PAC/PAA