Este articulo describe el proceso de administracion en servidores Linux, desde una perspectiva administrativa organizacional, usando procedimientos basados en tecnologias de software libre orientadas a la alta disponibilidad e implementacion de mecanismos de seguridad para conservar la integridad de los recursos informaticos. PALABRAS CLAVE: administracion, alta disponibilidad, backup, cluster, corosync/OpenAIS, DRBD, pacemaker, CRM Administrative model for managing Linux servers, implementing security mechanisms and open source technologies high availability oriented ABSTRACT This article describes the management process on Linux server, from an organizational management perspective, using procedures based on free software technologies aimed at high availability and implementation of security mechanisms to preserve the integrity of computer resources. KEYWORDS: administration, backup, cluster, corosync/OpenAIS, DRBD, high availability, pacemaker, CRM.