Astaro Deployment Guide
High Availability Options
© 2011 Astaro GmbH & Co. KG – a Sophos company. Subject to change without notice.
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Deploying a Cluster System
Installation
The cluster functionality of Astaro Gateways adds scalability to the high availability feature. Hardware resources
on additional HA systems in this setup can effectively be used to enhance performance and capacities of your
Astaro environment. How the load is shared and what the performance improvements are will be discussed in
the chapter
“Performance Improvements”
below.
Cluster System
Initial Setup
To build a cluster of two or more Astaro devices you need to first identify and manually configure the first
system in the Active/Active HA environment. Besides choosing “Cluster” as an operation mode, the
configuration is very similar to the manual configuration of an Active/Passive HA system: You need to provide
the same configuration information and also have the same options to add additional cluster nodes manually or
automatically.
Status of a Four Node Cluster
Once two or more systems become active in a cluster, they automatically share and balance the workload
between each other and provide fault tolerance to ensure high availability.
