To update the UMS High Availability network, proceed as follows:
While being updated, a server disconnects itself from the productive database and stores a copy of it locally. The last updated server will also update the schema of the productive database. After this, all other servers connect themselves again to the original productive database. In this way, all servers can be addressed by the thin clients at any time during the update process, e.g. to supply user-specific profiles (IGEL Shared Workplace).