Takashi Ikebe

There are some computing systems that require high availability. Telecommunication systems are a good example. They require 24 hours a day and 365 days a year service availability and their downtime should not exceed five minutes per year and that includes hardware and software upgrades. These systems require carrier-grade reliability that guarantees high service availability, 99.999% uptime or higher. To satisfy high-availability requirements, special-purpose operating systems, sometimes proprietary or self-developed operating system, were used in telecom systems. As the telecommunication world is now moving towards using the Linux operating system on mission-critical systems, new high requirements are imposed on the operating systems. However, Linux is designed to work best on desktop and enterprise systems, and it doesn't have the mechanisms and capabilities nee... (more)

Carrier Grade Linux - The Next Generation

A transformation is taking place in telecommunications to meet the demands of new voice and data technologies. These technologies include Voice-over-IP (VoIP), the packet-switched alternative to old-fashioned circuit-switched telephony. To enable VoIP traffic, application servers must provide carrier-grade reliability that guarantees high service availability (99.999% uptime or better). These systems must also scale to handle hundreds of thousands of calls and provide predictable performance and high speech quality. The telecommunications industry is undergoing enormous changes ... (more)