In order to provide high availability for ICT services it is necessary to take care of quite a few details that are usually invisible to the end user. One of these is redundancy i.e. having backup resources available at both hardware and service levels. An example of this is having dual power supplies, hosting more important servers in two physically discrete locations, etc. In this lecture we will look at the typical equipment and support service implementation required for the uninterrupted operation of our services.

Klemen Andreuzzi (ARNES) has a degree from the Faculty of Computer and Information Science. He has been with ARNES for the past 7 years and is employed in the field of system administration. He puts his extensive knowledge to use in developing the most advanced solutions (DNS, e-mail, firewalls, load balancing, high availability systems, optimizations, etc.) In his free time he devotes himself to computer graphics and computer vision.