Clusters
A client's environment is located on a cluster together with other clients (except clients with a dedicated cluster). After logging in, add ‘__serverinfo__' to the URL behind '/axxerion/’ and hit enter to see on what cluster the environment is located.
...
To access the backup or test server of a client, you will need to know the cluster. More on the backup and test servers, see the next chapter.
Servers
On a cluster, the clients environment can be accessed via several servers.
...