The Challenge of Migrating Fujitsu Group's 640 Internal Systems

Fujitsu has been working on an internal project to migrate 640 of its internal systems located internationally, including long-running mission-critical systems, to the FUJITSU Cloud Service K5 platform launched in 2015. This major migration project has already produced many benefits.

A bold project to migrate close to 13,000 servers to the cloud - its two goals

In Feb. 2015, Fujitsu announced a five-year worldwide migration of all Group internal systems (around 640 systems, including mission-critical and legacy systems) to its cloud service platform.

The migration project has two goals. First, from the perspective of total optimization, to review all internal systems having a silo-like structure based on individual optimization, aiming to reduce operational costs and minimize application development periods/costs. Around 13K servers and 200-300 Mstep applications have been identified in domestic systems, some of which have similar functions that lead to inefficiencies. These must be operated individually because architectures differ by development timing, the main reason for higher costs.

Fujitsu has been integrating its infrastructure, ceasing its prior approach of allocating servers/storage per system. This project has drastically sped up infrastructure integration efforts.

Establishing a reference model

Goal two is to create a reference model for customers with the know-how of having implemented it internally. Many companies face challenges in migrating mission-critical systems to the cloud. So, Fujitsu chose to do a large-scale cloud migration to extract issues and clarify solutions for cloud migration. Lessons learned are fed back to MetaArc and FUJITSU Cloud Service K5.

Fujitsu divided the project into three categories - Platform/Data Center/Network Integration - setting cost reduction targets for each.

By consolidating infrastructure on K5, the four-month system introduction period was reduced to two weeks. Auto scaling (sharing resources among systems) ends the need to deploy resources based on peak demand predictions. By eliminating need for many infrastructural operations, the number of virtual machines was cut in half and man-hours by 30%.

As the project progresses, cost reduction effects will become more prominent by integrating common application functions and automating operations. So, application development efficiency is expected to greatly increase by integrating basic functions (user authentication, security, monitoring, operations, workflow, and data linkage) into common parts to remove the need for new development. Later, Fujitsu will add consumption tax calculation and My Number management functions and provide them to customers as commercial services in order to realize an environment for creating applications simply by combining parts. Fujitsu has started to enhance security, customize services into menus, and improve availability to feed back the obtained knowledge to MetaArc and K5.

Hadoop (for accumulating/analyzing big data) and SAP HANA (for high-speed analysis) also run on K5. Fujitsu will further promote internal practices and provide knowledge from such practices to customers as references.