COMPARING HP-UX 11i v3 AND LINUX FOR HOSTING CRITICAL WORKLOADS
This white paper presents a technical comparison of HP-UX 11i v3, Red Hat Enterprise Linux 5 (RHEL 5), and SUSE Linux Enterprise Server 11 (SLES 11) operating systems, focusing on their functional capabilities in terms of scalability, virtualization, reliability, and security. In each of these areas, the paper identifies some critical technical requirements, describes the significance of these requirements in current customer environments, and then shows how well HP-UX 11i v3 meets these requirements compared to the Linux systems. . Red Hat Enterprise Linux 5 and Novell SUSE Linux Enterprise Server 11 offer a full set of capabilities related to virtualization, security, and clustering for the Linux platform, narrowing the technical gap with leading UNIX systems and raising questions with users whether Linux systems are ready to take on the majority of UNIX workloads. However, UNIX remains one of the most trusted platforms in the industry, having proven its ability to support robust operations for decades. Moreover, UNIX continues to evolve as well, increasingly offering functions that were formerly only available for mainframes. Many users still view UNIX as the platform of choice for hosting critical workloads that demand the highest levels of reliability and security. Indeed, HP-UX still some technical advantages over Linux, which will be discussed in detail throughout this paper.