skip to main content
Installation Guide > Introduction
Introduction
Welcome to the Instant Connect Enterprise (ICE) Server Installation Guide. This document walks through the installation process of an ICE Server from pre-install to post-install.
About ICE OS
The Instant Connect Enterprise Operating System (ICE OS) is a proprietary Linux-based operating system which allows for a streamlined installation of an ICE Server as a single node Kubernetes cluster. Support for air-gapping and georedundancy are also included in the ICE OS install.
Online vs air gap:
An online server has internet access and so can pull ICE packages from online repositories. An air-gapped server operates 'offline' (without an internet connection), which is desirable for situations where internet connectivity is either unreliable or unwanted.
Georedundancy: 
A georedundant ICE deployment consists of synchronized data centers placed in different geographic locations. This safeguards against service disruptions due to catastrophic events or natural disasters, and supports traffic load balancing for optimizing performance. Georedundancy is sometimes referred to as a 'multi-node' deployment as opposed to a 'single-node' deployment where there is only one ICE Server.
Upgrading ICE
If you are upgrading an existing ICE system to a newer version, then refer to the upgrade guide for your version of ICE. The upgrade guide is available on the Instant Connect support portal at https://support.instantconnectnow.com.
GEOREDUNDANCY
If you are supporting geo-redundancy, then ensure you complete the GEOREDUNDANCY steps in the procedures. Ignore them if you are not configuring a geo-redundant deployment.