Hi, We are looking for a solution to build a redundant infrastructure for Koha. What we want to do is shown in the diagram http://adminkuhn.ch/download/Redundant.png The main objective of such a solution is: If one of the Application Servers goes down the other will take over the job without losing any time. If the DB-Server Master goes down we will be able to build the Master out of the Slave and create a new Slave next to the new Master. Has anyone ever built such an infrastructure with Koha and can give us some advice how to proceed? Is this possible with Koha anyway? Best wishes: Michael -- Geschäftsführer · Diplombibliothekar BBS, Informatiker eidg. Fachausweis Admin Kuhn GmbH · Pappelstrasse 20 · 4123 Allschwil · Schweiz T 0041 (0)61 261 55 61 · E mik@adminkuhn.ch · W www.adminkuhn.ch