# Genesys Quality Management Suite 8.1.520 : Operating System

Genesys Quality Management Suite can be installed on two operating systems: CentOS (32bit and 64bit) and RedHat (32bit and 64bit). Based on your requirements choose what operation system you will install:

## CentOS

Genesys Quality Management Suite 8.1.520 DVD/ISO contains CentOS 6.5 packages so both OS and Genesys Quality Management Suite packages can be installed from a single DVD/ISO file.

## RedHat

RedHat requires to be installed in advance. Genesys Quality Management Suite 8.1.520 support RedHat version 6.5. Please make sure that your system is properly licensed.

## 32bit/64bit architecture

Genesys Quality Management Suite 8.1.520 can be installed on a 64bit OS and this brings the following benefits

- Ability to allocate more than 2GB of memory per process. Which is crucial for services such as Recorders, Decoders, Integration Modules and Core service.
- ability to use more than 4GB of memory per server without using PAE. Using PAE in order to allocate more memory on a 32 bit system can cause stability issues.
- Using 32 bit software on a 64 bit hardware will never allow you to reach the full potential of your hardware.
- You can have your 64 bit DB PostgreSQL on the same server as Genesys Quality Management Suite. No need of a dedicated DB server.

However there is a one challenging point in a way to go for a 64 bit solution. Upgrading your existing Genesys Quality Management Suite solution from 32 bit to 64 bit requires a full reinstallation of your server with restoring the old data back. This process requires a downtime that can be critical for some customers.

Useful facts about 64 bit Genesys Quality Management Suite:

- Genesys Quality Management Suite 8.1.520 is distributed in both architectures: 32bit and 64bit
- Synchro process supports synchronizing between 32bit Genesys Quality Management Suite deployment and 64 bit Genesys Quality Management Suite deployment. I.e. you can have Recorder clusters in 32 bit and the Replay server in 64 bit.
- Screen Capture client will remain 32-bit even if you have 64 bit Genesys Quality Management Suite.